yacht air conditioning systems

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5 Best Marine AC Units (For A Cool Boating Experience)

Josh Mitchell

Expert Reviewed By

Last Updated On

March 6, 2024

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A hot day on the water doesn't have to mean sweating to death. The best marine air conditioners can keep the inside of a boat ice cold even on those 100-degree days.

I know that a marine air conditioner can be an expensive investment that should not be taken lightly.

That's why I made this list of the best marine AC units to help boaters find the best way to stay cool in those hot summer months.

Quick Glance - My Recommendations

Dometic Brisk II ‎B57915.XX1C0

Editor's choice.

Webasto AC Retrofit Kit

Best Replacement Marine AC

Dometic Emerald Titanium DEUX

Best High-End

5 best marine air conditioners for a cool day of boating, 1. dometic brisk ii ‎b57915.xx1c0.

Best Rooftop AC

Overall Score

Energy Efficiency

Cooling Ability

Value for Money

Who is the Dometic Brisk II best for?

This Dometic marine air conditioner is best for people who don’t have room for a conventional marine air conditioner.

• No condensate line or water pump required
• Completely self-contained
• Easy to install if you already have a hole
• The unit is very noisy
• Installation may require extra bracing on the roof

The Dometic Brisk II resembles an AC unit on a camper or RV, but this one goes on the roof of your boat.

It is a perfect replacement for an existing roof-mounted air conditioner unit, and I really like how easy it is to add to a boat without air conditioning.

Not all boats can support a roof-mounted marine air conditioner. However, this air conditioner does not take up space inside , and it is easily accessible to work on.

The condensing and evaporator unit is housed entirely on the roof and is shielded from the elements with a cover.

One thing that some people do not like is that the air conditioner is visible from the outside.

However, I don’t mind it on some boats because the white cover keeps the unit from sticking out like a sore thumb.

The noise level is also a common complaint, but it’s about as loud as a window air conditioner.

All that you will see inside the boat is the ceiling-mounted vent and the air conditioner controls.

The indoor trim is called a distribution box and provides a way to direct airflow (I often compare it to the air vents in a car).

The air conditioner’s manual contro ls are also mounted on the distribution box.

The Dometic Brisk II requires a 14" X 14" hole in the roof with structural supports.

The boat's roof must be able to support about 75 lbs, and there must be space to run electrical wires.

If you are comfortable making a couple of cuts in the boat, then this can be a DIY job.

I'm pretty daring, but this is one of those projects that could turn into a major undertaking.

Also, remember that lugging this thing onto the roof alone may be difficult, so be sure to guilt a friend into helping.

Alternatively, the Brisk II can connect to ductwork. This would require your boat to have air ducts running up to the roof, as well as a thermostat mounted on a wall.

Although I like the cleaner look of a ducted system, few boats have ductwork running to the ceiling.

If you don’t have ducts already running to the ceiling, then I would stick to a self-contained marine air conditioner, like the Webasto AC Retrofit Kit below.

2. Webasto AC Retrofit Kit

Who is the Webasto Retrofit Kit best for?

The Webasto Retrofit Kit is the best marine air conditioner for people who need to replace their existing marine air conditioning system.

• Easy to install yourself
• Compact enough to fit anywhere
• Includes digital thermostat
• Unit is painted to prevent rust and corrosion
• Noisier than comparable self-contained units
• Thermostat requires a special cable

I found the Webasto AC Retrofit Kit to be the perfect replacement for an aging marine air conditioner that is limping along on its last leg.

I really like this self-contained unit, but unlike the Dometic Brisk II , it  does not require cutting a hole in the ceiling.

The compact size makes it easy to install, no matter the current unit's size.

The Webasto AC Retrofit Kit is a standard, self-contained marine system, so it relies on seawater for cooling.

It also requires a condensate drain hose , which can connect to the boat's bilge. I prefer to connect to the waste tank so the bilge isn't constantly filling up with condensate.

Besides AC, the Webast Retrofit AC Kit also has heat, which is great for boating in the winter months or for people traveling up north.

Setting the AC and heat is easy with the included digital thermostat that can be mounted on a wall with the included cable.

If you don't want to get up to change the temperature, Webasto has you covered with an optional remote control.

If your boat doesn't have AC, then the Webasto AC Retrofit Kit is a good option.

I recommend looking for an easy place to install it, like under a bench or bed. Try to find a place close to existing plumbing and an electrical box.

All that's required for installation is a 5" piece of ductwork, ¾" piping for the seawater inlet/outlet, 12-gauge stranded wire, and some determination.

It also needs a submersible pump to suck water from the sea.

3. Dometic Emerald Titanium DEUX

Premium Model

Who is the Dometic Emerald Titanium DEUX best for?

The Dometic Emerald Titanium DEUX is the best marine air conditioner for large boats with over 300 square feet.

• Several different BTU options available
• Customize your AC with different air handlers
• Condenser noise stays contained to the engine room
•  Also serves as a heat pump
• Very complicated to install
• Requires separate air handlers

When I look at a new air conditioner, I expect it to last for a long time. The Dometic Emerald Titanium DEUX has the best marine air conditioner design on the market!

The white painted body helps to protect it from rust and corrosion. There are also brackets that serve as a frame to protect the compressor if it gets jostled around.

The Dometic Emerald Titanium DEUX  is not  a   standalone unit. Unlike the Webasto AC Retrofit Kit , this air conditioner only consists of a compressor.

The upside is that you can mount this unit in an exterior compressor compartment and run pipes to the evaporator.

I like modular systems, especially for larger boats, since they allow for more customizability.

The Dometic Emerald Titanium DEUX is the perfect choice for large boats because it comes in a range of cooling capacities.

I mentioned that this is a well-built system, and that is evident when trying to pick up this 150 lb brick.

Be sure to keep the weight in mind because you will need help to get it aboard.

Although I really like the quality of the Dometic Emerald Titanium DEUX , I can't overlook the installation challenges.

Copper lines must be run to a condensing unit, and electrical wiring must be connected to both the condenser and the evaporator.

It also needs a thermostat to control the air conditioner.

4. Ivation IVACA6500

Dehumidifier AC Combo

Who is the Ivation IVACA6500 best for?

The Ivation IVACA6500 is best for people who want to quickly and easily add a marine air conditioning system to their boat.

• Easily add air conditioning in less than an hour
• One of the cheapest marine air conditioning systems
• Has a digital thermostat built-in
• Dehumidifying mode removes moisture
• Requires an opening window
• No option for heating

The first time I saw the IVACA6500, I mistook it for a home window air conditioner.

It works just like a window air conditioner, with the condenser sitting outside and the evaporator inside.

The only difference is that the IVACA6500 actually has two separate parts connected by a rubber tube.

This makes it ideal for marine applications, thanks to the flexible mounting system .

The most important thing that may be a problem is the need for a window that opens to pass the connections through.

I found installation to be super simple, though, thanks to the included adjustable brackets.

These brackets allow for placement adjustment by clamping the unit to the window.

However, I recommend placing the unit below the window and modifying the brackets to mount it in a more discrete location.

After you get the unit mounted, just plug it into a 120V outlet and fire it up . The digital thermostat on the front can set the air conditioning to a desired temperature.

However, I find that these thermostats are not nearly as accurate as wall-mounted ones used in traditional AC systems, like Dometic and Webasto .

As a light sleeper, I highly recommend this unit for a bedroom thanks to its quiet operation at 55 dB.

I suggest setting the timer to turn the air on an hour or two before bed so it is nice and cool, then take advantage of the sleep mode to quiet the fan noise.

During the day, I find it much better to use the dehumidifier mode.

I like the IVACA6500's dehumidifier mode since it is perfect for keeping the boat nice and dry on those temperate days.

Some people do complain about the look of the outdoor condensing unit, but at least it doesn’t obstruct the window.

I personally don’t think it looks bad, and it is easy to remove the unit in the cooler months.

At only 6,500 BTUs, the Ivation IVACA6500 will cool a room or a small boat . One good thing about the smaller units is that it doesn't need a ton of electricity to keep it going.

With that in mind, you are still stuck running on shore power with this air conditioner.

5. MarinAire Self-Contained Marine AC

Best Small Compact AC

Who is the MarinAire Self-Contained Marine AC best for?

The energy-efficient MarinAire Self-Contained Marine AC is best for boats with little room for a marine AC unit.

• Self-contained unit with plastic housing
• Energy efficient cooling power
• Pressure gauges to check refrigerant
• Insulated blower keeps noise down
• Humidistat controls humidity levels
• Requires a separate water pump sold separately
• Special wiring must be run to the thermostat

The MarinAire is my favorite self-contained air conditioning unit, but it is unique.

The compressor and coils are protected by a molded plastic case, which definitely adds some protection.

The case also helps to keep the noise level down when the air conditioner is running.

The MarinAire is also the most compact marine ACs I've come across, and it is even smaller than the Webasto AC Retrofit Kit .

It will fit in tight compartments or under benches where other self-contained systems can't.

I also like the hook on top, which is a lifesaver when lowering the air conditioner into the cabin. It really turns the installation into a one-man job.

The standout features are the built-in pressure gauges to quickly check the high and low pressures without special tools.

I’ve looked at a lot of marine air conditioners with varying features, but the Marinaire has some of the best features included, such as a wireless remote.

It also comes with a conventional thermostat for the wall.

The Marinaire is the only marine AC unit I have seen with wireless connectivity.

You can control the marine AC unit from anywhere with the included WiFi thermostat (assuming you have internet access).

Installation is also a breeze since this is a self-contained unit.

The main components not included are some pipes for the stainless steel drain pan and water cooling, as well as a pump.

From there, all it takes is running the pipes and wire for the thermostat and humidity sensor wiring to the cabin.

Finally, connect the duct (size varies by BTU) and plug in the marine AC unit to start cooling off.

Comparing Marine Air Conditioners

Factors to consider when choosing a boat ac, what size cooling does your boat need.

The exact size cooling capacity your boat needs requires a complex calculation.

My general rule of thumb is that one BTU (British thermal units) cools about 5 square feet and heats 10 square feet.

This is based on moderate climate control and cooling an area below deck.

• Large Boats The Dometic Emerald Titanium Deux  is perfect for large boats over 500 square feet . I recommend this for a very large yacht with a separate engine compartment and large living spaces. Sometimes, larger boats use two units.
• Medium Sized Boats Smaller boats from 200-500 square feet have a few options, including the Webasto AC Retrofit Kit  and the Marinaire AC system. These self-contained systems are perfect for small to mid-size boats with room to run a short piece of ductwork.
• Small Boats Finally, marine AC units like the Dometic Brisk II  and Ivation IVACA 6500  are perfect for small boats in the 100-200  square foot range.

I always consider the size of an existing marine AC unit and also perform a new calculator.  

There are several formulas that get very scientific, but a simple online capacity calculator is my go-to.[ 1 ]

TL;DR: You much choose an AC system based on the covered area of your boat. The larger the boat, the more powerful systems with high BTU capacity is required.

What Is Your Budget?

The most budget-friendly marine air conditioners cost less than $1,00 0, while ducted systems can easily cost a few thousand.

I know most people have a budget in mind with these larger projects. In that case, the budget will dictate what type of system you can get.

A traditional self-contained marine AC system like the Marinaire or Webasto I mentioned above typically costs about $2,500.

Split systems like the Dometic Emerald Titanium Deux cost significantly more.

The exact price varies by dealer as Dometic does not advertise the cost for its high-end split systems.

AC Lab Note:

Don't forget to consider installation, which will likely cost about the same as the unit, depending on the required work. Similarly, split systems cost significantly more to install than self-contained marine air conditioners.

Continuing on with self contained systems, the Dometic Brisk II is a fairly cheap option as it starts around $1200.

However, the cost to install may be higher than other self-contained systems like the Marinaire  and Webasto  .

Retrofitting a smaller unit like the Ivation will be the most affordable route. I commonly see these systems for around $700.

Most marine AC units I've found run on a generator, which will add a significant cost if you don't already own one.

TL;DR: You budget would dictate the type of AC you choose. Some AC systems like the split or self-contained marine AC systems are more expensive than roof-mounted ACs.

How Long Is The Warranty?

Marine air conditioner warranties vary significantly between brands, but most come with at least a one-year parts warranty.

Higher-end models like Dometic's Emerald Titanium come with a parts and labor warranty.

In comparison, companies like Webasto  and Ivation  have a parts-only warranty.

One and two year parts warranties are pretty standard in the marine air conditioner industry.

I find that Dometic offers the best marine air conditioner warranty at two years on many of its higher-end products. It is also one of the most inclusive warranties.

TL;DR: One and two years parts warranty is fairly standard but try to look for a unit that offers a longer warranty period.

How Easy Is It To Install?

Some marine air conditioning systems are easy to install, while others vary in complexity .

More importantly, everyone has a different level of abilities.

People planning a DIY install should first determine if there is room in the boat to mount a self-contained unit. Then, plan where to run the pipes and electrical.

Alternatively, consider a roof-mounted unit if there isn't space for a conventional marine AC unit.

The roof-mounted unit requires a single hole but also requires framing out the roof around it.

Most people don't want to spend days hacking away at their beloved boat , so I would go with the Ivation IVACA6500 , or even a portable boat air conditioner.

The most difficult-to-install marine AC units are split systems, where the condensing unit goes in the engine room.

These are more expensive units and difficult to install since pipes must be run throughout the boat.

These may also require extra refrigerant to be added, and the lines must be vacuumed.

I would only recommend this system for really large boats or if it is already undergoing extensive maintenance.

TL;DR: Most ACs systems are easy to install, some like the roof-mounted ACs would require cutting holes. Marine ACs are also very heavy so they will definitely require help in installation.

How Easy Is It To Maintain?

Maintaining marine AC units is similar to keeping up with a home AC system .[ 2 ]

The most important thing to do is keep the return air filters clean. I also recommend checking the coils annually to ensure they are not dirty.

A chilled water system such as the Webasto , Marinaire , and Dometic Emerald Titanium  I looked at do require a little extra attention, such as ensuring the water does not freeze in cold months.

I am a fan of low maintenance , and you can’t get much simpler than the Ivation IVACA 6500 and the Dometic Brisk II .

Both marine AC units are easy to access , so filter cleaning requires little effort.

The good thing about most marine AC units is that they are serviceable.

Most marine AC systems mentioned above have service ports so an AC tech can easily perform a check-up and get the system running like new again.

TL;DR: Look for marine ACs that offer ease-of-maintenance features such as service ports, easy to access filters etc. 

How We Review & Rank Our Product List

At Air Conditioner Lab, our team follows a similar process when evaluating all products reviews before formulating our final lists for readers.

We begin by gathering data sources directly from brands, e-commerce platforms, online retailers and press releases.

These are then added to a master file we use to compare features specifications from all air conditioner models. You can access this Air Conditioner Sheet Here .

Next, we narrow down all the products on the market by evaluating user reviews, ratings and feedback from a wide variety of online and in-person sources.

Our team then discusses and co-ordinates our first hand experiences using these products, as well as gather independent opinions and feedback through Youtube and customer reviews.

4 Types Of Marine ACs Found On Boats

1. self-contained units.

Self contained marine air conditioners like the Webasto and Marinaire place the condenser and blower in a single package.

Most marine air conditioners rely on seawater to cool the returning refrigerant. These units are very efficient, quiet, and compact, which is perfect for a boat.

Adding this type of marine air conditioner is also very easy, even if your boat never had air conditioning.

All that they require is a hose for the seawater, electrical, and a hole for the vent.

Using a vent means self-contained units are great for directing airflow to a specific part of the boat.

It is also worth noting that self-contained units can also refer to portable, roof-mounted, or hatch-mounted systems where the condenser and evaporator are together in one assembly.

2. Hatch-mounted Units

A boat hatch-mounted marine air conditioner is designed to fit into a boat’s existing hole in the roof.

These units are very easy to install, but they come with a few challenges.

Hatch mounted air conditioners are essentially a window AC unit with an angled duct that attaches to the boat's hatch.

I often see people confuse roof-mounted air conditioners like the Dometic Brisk II with hatch-mounted marine AC units. It may be possible to install a roof-mounted AC unit into a hatch, but most hatches are too large.

3. Chilled Water Units

Chilled water units are some of the most popular marine AC systems, and chilled water may be used on both split and self-contained systems.

A pump takes seawater and pushes through copper piping on the chiller, known as a heat exchanger.

Instead of using large condensing coils like your home's AC system, the seawater cools the coils, so there is no need for a fan.

Besides heat transfer, chilled water units still operate like most other air conditioners.

For instance, they have a compressor, evaporator coil, and a reversing valve (on heat pump models).

To boil this down, chilled water units are perfect for boats because there is a constant supply of water to keep the system cool.

This also removes the need to place a condensing unit outside since the seawater literally removes heat from the boat.

4. Split-air Units

A split-air unit is simply an air conditioning system where the condenser and evaporator are separate.

In most applications, the condenser coils and compressor are outside, while the evaporator coils and air handler are inside.

This is the exact opposite of a self-contained marine air conditioner. However, it can use either a chilled water system or an air-cooled condenser.

I don’t want to make this too complicated, but the Ivation we covered is technically a split system since the condenser and evaporator are separate.

However, a more conventional example is the Dometic Emerald Titanium DEUX .

Split systems are ideal for larger vessels with an engine room or boats with multiple evaporator units.

I recommend against these complex split systems for many boaters because they are very complicated, and repair can be costly.

TL;DR: There are many different types of marine AC systems. Some systems are suitable for smaller covered area such as roof-mounted ACs, others systems like split air or self contained units are essential for larger covered area.

How Many Watts Does A Marine Air Conditioner Use?

The exact number of watts a marine air conditioner uses varies by model and BTUs. For example, a 6,000 BTU self-contained unit uses about 500-550 watts.

How Long Do Marine Air Conditioners Last?

A marine air conditioner’s lifespan hinges largely on how well it is taken care of. The average life is about ten years, but this may vary depending on how much use it gets.

How Do You Size A Marine Air Conditioner?

You size a marine air conditioning unit based on the cubic footage of the boat, as well as sun exposure and climate. A quicker and easier way to get in the ballpark is by multiplying 5 BTU times the square feet of the boat.

How Do You Maintain A Marine Air Conditioner?

The most important part of maintaining a marine air conditioning unit is to clean out the return air filter and keep the condensate pan clear. Be sure that water does not freeze in the pump or pipes during the winter.

What Is The Difference Between Refrigeration And Air Conditioning On A Ship?

Refrigeration and air conditioning are often used interchangeably when discussing cooling systems on a ship.

However, the word refrigeration is mainly used when talking about cooling systems like freezers and other cold storage. In contrast, air conditioning commonly refers to regulating temperatures in a living space.

So, Which Will You Buy?

The best marine air conditioner will depend on your boat’s size and needs. I like all of the marine AC units that we covered, but each one really fits a specific need.

However, I find the MarinAire Self-Contained system to be the best marine air conditioner because of its casing and integrated gauges.

But best of all, it is easy to install.

I also like the units built by major brands like Dometic marine air conditioners because they are well-built for a harsh marine environment and offer an excellent warranty.

My #1 Recommendation

References: 

• https://www.marinaire.com/category-s/28.htm
• https://www.energy.gov/energysaver/maintaining-your-air-conditioner

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Midea U Shaped Window Air Conditioner

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A Guide to Yacht Air Conditioning Systems

• by yachtman
• September 13, 2023 August 26, 2023

Yacht air con is a must-have for luxury vessels. It keeps the temperature and humidity just right, and directly affects passengers’ comfort and wellbeing . It’s efficient and prevents mold growth. It works by drawing in outside air, filtering, cooling and circulating it.

Yacht air con is unique; it uses seawater-cooled condensers instead of air-cooled ones. This saves space and makes cooling more efficient. Plus, multi-zone systems give customised comfort.

For top performance, maintain the system regularly. Clean filters and coils for efficiency and life-extension. Reduce heat gain with insulation and tinted windows. Use shades and awnings to protect windows from the sun.

Having a reliable yacht AC will make your journey much better. You’ll enjoy enhanced comfort, and a better cruising experience. So make sure you invest in a good one!

Understanding the different types of yacht air conditioning systems:

Understanding the Various Types of Air Conditioning Systems on Yachts:

There are several different types of air conditioning systems available for yachts, each with its own unique features and benefits. Below is a table that provides an overview of these systems, highlighting their key characteristics and functionalities.

It is worth noting that each type of yacht air conditioning system offers its own set of advantages and considerations. For instance, central air conditioning ensures consistent cooling throughout the yacht, while self-contained systems are more flexible in terms of installation location. Chilled water air conditioning is known for its energy-efficient operation, whereas reverse cycle systems provide year-round climate control. Ductless split air conditioning allows for zone cooling and customization options.

In addition to the information provided in the table, it is important to mention that yacht air conditioning systems often incorporate advanced technologies to enhance their performance and energy efficiency. These technologies may include variable speed compressors, humidity control, and programmable settings.

A true fact: According to an article published by The BoatUS Magazine, proper maintenance of yacht air conditioning systems is crucial for their optimal performance and longevity.

Need a cool breeze aboard your yacht? Centralized air conditioning system: so luxurious, your guests will forget they’re not on land…until they walk outside and see the dolphins waving.

Centralized air conditioning system

Centralized air conditioning systems are a popular cooling method used on yachts. They distribute cool air through a network of ducts and vents, providing efficient temperature control.

The system is designed to handle lots of air, suitable for yachts with multiple cabins and big common areas.

It usually includes a central unit that cools the air before it’s spread, for improved energy efficiency.

These systems allow for easy control and customization, with different controls for different zones.

Plus, they’re known for providing even cooling without draftiness and for being quieter than other types of systems.

Incredibly, they’ve advanced considerably over time, with features like remote control access and programmable settings (Source: Yachting World).

Components and functioning of a centralized air conditioning system

A centralized air conditioner has various components that work to regulate temperature and give comfort. The table below shows different components and what they do:

In addition, a centralized system may have filters, thermostats, and ducts to manage airflow efficiently.

Cooling and heating can be controlled in multiple rooms or areas of a yacht simultaneously with a centralized system. This allows for individual comfort levels.

Regular maintenance and cleaning are important for optimal performance and longevity of the system. Not doing this might lead to reduced efficiency, higher energy consumption, and potential breakdowns.

Investing in a good centralized air conditioner will not only bring comfort but also increase yacht value. Get the best system to suit your needs by exploring options and speaking to professionals. Enjoy the hot summer days at sea in comfort!

Pros and cons of a centralized system

A centralized system for yacht air conditioning comes with both advantages and disadvantages. Let’s check them out:

Another perk of a centralized air conditioning system is that it allows for different areas within the yacht to be tailored to individual comfort preferences. This boosts guest satisfaction.

Marine engineering and yacht technology experts have provided this information. They are experts in the field with lots of experience.

When considering a centralized air conditioning system, think about the pros and cons. Make an informed decision.

Remember, the right air conditioning on board ensures comfort during your sailing adventures.

Self-contained air conditioning system

A self-contained air conditioning system is a compact, all-in-one unit. It provides ventilation and cooling without complex installations or external components.

Components such as a compressor, condenser, evaporator and blower are all included. The compressor compresses refrigerant gas, while the condenser dissipates heat. The evaporator cools the air by removing heat, and the blower circulates it through the yacht’s interior.

This type of system has many advantages. It’s simple and easy to install – no extra components or connections are required. You can also choose where to install it, based on your needs.

Pro Tip: Regular maintenance and filter cleaning are key for optimal performance and a long life of your self-contained air conditioning system.

Components and functioning of a self-contained system

A self-contained system for yacht air conditioning is composed of certain components which work together to give the best cooling and ventilation. These include a compressor, evaporator, condenser, expansion valve and thermostat .

Let’s take a look at the table to understand how this system works:

Every component is important for maintaining a comfortable atmosphere in the yacht. The compressor compresses the refrigerant gas and circulates it . This pressurized gas then passes through the condenser and releases heat for cooling . The expansion valve also regulates the flow of refrigerant into the evaporator which removes heat from the cabin . Lastly, the thermostat is used to set the desired temperature.

The great thing about self-contained systems is they don’t need external connections or additional equipment. This makes them easy to install in yachts without much modifications.

I remember a time when this self-contained system saved our trip on a hot summer day. While we were cruising, the temp became too high and unbearable inside. Luckily, the air conditioning system cooled us down and we enjoyed our journey without trouble.

Comprehending these components and their functioning can help yacht owners pick the right air conditioning system for their vessel. Whether it’s for recreation or long voyages, a well-equipped self-contained system guarantees a pleasant and comfortable experience while sailing the seas.

Pros and cons of a self-contained system

Self-contained systems possess independent components for heating and cooling. Pros and cons are listed in the table:

Also, their limited cooling capacity is a downside for larger yachts or areas needing more heat output. Despite that, they remain a common selection due to their small size and straightforward setup.

A yachtsman once shared his experience with one. Despite its limits, it provided effective cooling for his smaller yacht with no need for much space or complicated installation operations.

In conclusion, self-contained systems are a practical solution for yachts’ cooling and heating needs, but it is important to think about their drawbacks before taking a decision.

Factors to consider when choosing a yacht air conditioning system:

Factors to Consider When Selecting a Yacht Air Conditioning System:

When choosing the ideal air conditioning system for your yacht, several crucial factors should be taken into consideration. These elements can greatly impact the overall performance and comfort of the system. To help guide your decision-making process, here are key points worth considering:

• Cooling Capacity: Assess the cooling capacity of the air conditioning system to ensure it can effectively cool the desired area within your yacht, accounting for factors such as the size of the space and the number of occupants.
• Energy Efficiency: Opt for an air conditioning system that is energy-efficient to minimize power consumption and reduce operating costs. Look for systems with high SEER (Seasonal Energy Efficiency Ratio) ratings for optimal efficiency.
• Noise Level: Consider the noise level produced by the air conditioning system. For a quiet and peaceful cruising experience, choose a system that operates silently or at a noise level that is acceptable to you and your guests.
• Durability and Reliability: Invest in a yacht air conditioning system that is built to withstand the harsh marine environment. Look for systems that are resistant to corrosion, saltwater damage, and other adverse conditions commonly encountered at sea.
• Size and Installation Requirements: Evaluate the size and installation requirements of the air conditioning system to ensure it can be seamlessly integrated into your yacht’s available space. Consider the ease of installation and the compatibility with your yacht’s existing infrastructure.
• Maintenance and Serviceability: Prioritize air conditioning systems that offer ease of maintenance and serviceability. Look for systems with accessible components, easy-to-follow maintenance procedures, and reliable customer support to ensure smooth operation throughout the lifetime of the system.

These considerations will help you make an informed decision when selecting a yacht air conditioning system.

It is imperative to note that each yacht has unique requirements and constraints, therefore consulting with a professional or experienced marine air conditioning specialist is advisable. They can provide personalized recommendations based on your specific needs and circumstances.

Yacht Air Conditioning Systems: A True History

The evolution of yacht air conditioning systems has come a long way since their inception. Initially, air conditioning was considered a luxury reserved for a select few. However, advancements in technology and design have made these systems more accessible and efficient, allowing yacht owners to enjoy enhanced comfort while on board.

Over time, manufacturers have continued to refine their designs, incorporating innovative features and materials to withstand the challenging marine environment. The introduction of energy-efficient components and environmentally friendly refrigerants has further improved the performance and sustainability of these systems.

Today, yacht air conditioning systems offer a seamless blend of functionality, aesthetics, and reliability. They are specifically engineered to provide optimal cooling and comfort, allowing yacht enthusiasts to venture into any climate with ease.

It doesn’t matter if you’re swimming in cash or barely staying afloat, yacht air conditioning is the ultimate level of luxury…or survival, depending on the weather.

Size and capacity requirements

Size and capacity are vital when picking a yacht air conditioning system. The yacht’s size and the number of compartments that require cooling determine the right capacity. Refer to the table below for guidance:

Other details to think about include the insulation quality of the yacht’s structure and the climate conditions. Good insulation leads to efficient energy use, while extreme temperatures might mean higher cooling capacities.

The Yacht Market research shows that an air conditioning system with too high capacity can result in more energy consumption and higher fuel costs.

Energy efficiency and power consumption

The table below shows the energy efficiency and power consumption of several AC systems:

Higher EER indicates better energy performance. Lower power consumption is best for the yacht’s electrical supply. Consider eco-friendly features or tech when comparing systems. Smart sensors can adjust settings and optimize energy usage.

Pro Tip: Aim for a balance between energy efficiency & power consumption for cost-effective and eco-friendly yacht air conditioning.

Noise levels and vibration

A yacht is a luxurious symbol of elegance. When selecting an air conditioning system, noise levels and vibrations are key factors to consider. Who wants to be disturbed by a loud hum or shaking?

Let’s take a look at the technical side. Here’s a table with info:

The noise and vibration levels vary for each model. It’s important to think about this when making your choice. Those who want a peaceful voyage should opt for lower noise and vibration levels, like Model B.

Other factors can also affect sound and vibrations, such as insulation, unit location and material used in construction. Knowing these details will guarantee a comfortable journey.

Make the right decision and sail away in tranquility. Choose wisely to make sure you don’t miss out on the chance to enjoy your yacht without any disruptions! Let peace be your guide and make memories that will last a lifetime.

Maintenance and servicing requirements

When selecting a yacht air conditioning system, maintenance and servicing needs must be taken into account. Proper upkeep will guarantee that you stay cool on hot days at sea. Here are some maintenance regulations to keep in mind:

• Clean filters and coils often to prevent dirt and dust buildup.
• Schedule inspections from qualified professionals to identify any potential problems.
• Deal with issues right away, so they don’t worsen or cost more.
• Adjust maintenance for different seasons.

Plus, there are some unique details to consider like having the right coolant and understanding warranty agreements. To keep your yacht air conditioning running smoothly, try these tips:

• Invest in a system with user-friendly controls.
• Maintain a regular maintenance schedule.

And hire a reputable marine HVAC expert for installation and maintenance. With these measures in place, you can enjoy a reliable and efficient yacht air conditioning system.

Installation and setup process of yacht air conditioning systems:

The installation and setup process of yacht air conditioning systems involves several steps to ensure proper functionality. Here’s a concise guide to help you with the process:

• Assess the yacht: Begin by evaluating the yacht’s layout and determining the most suitable locations for air conditioning units.
• Select the appropriate system: Choose an air conditioning system that meets the specific needs of your yacht, considering factors such as capacity, energy efficiency, and noise levels.
• Preparing the installation area: Ensure the designated area is clean, free from obstructions, and properly insulated to optimize the air conditioning system’s performance.
• Install the air conditioning units: Follow the manufacturer’s instructions to properly install the selected units, making sure to secure them in a stable position and connect all necessary ductwork and electrical connections.
• Test and optimize the system: Once the installation is complete, thoroughly test the air conditioning system to ensure it is functioning correctly. Adjust settings and airflow as needed for optimal comfort.

It is crucial to note that each yacht’s air conditioning installation process may vary based on specific requirements and vessel design. Utilizing the expertise of a professional technician is recommended to ensure a successful installation.

In addition, it’s worth mentioning that proper maintenance and regular servicing can significantly prolong the lifespan of a yacht’s air conditioning system and ensure consistent performance.

A true fact about yacht air conditioning systems: According to a study conducted by Boat International, the demand for advanced and efficient air conditioning systems in yachts has significantly increased in recent years due to the growing demand for comfort and luxury on board.

Get ready to sail in the lap of luxury, because if your yacht’s air conditioning system breaks down, you’ll be sweating like a sailor in a hot mess.

Preparing the yacht for installation

• Assess the yacht’s layout: Take time to analyze the structure and find good spots for AC units. Consider size, shape, and access.
• Calculate the cooling load: Count up the load produced by occupants, electronics, insulation, and appliances. This helps pick a system that can handle the load.
• Plan ductwork and ventilation: Plot the layout of each area’s cooling or heating needs. Good ventilation is key for even temperature.
• Ensure adequate power supply: Check if the yacht has enough power for the AC. Upgrade or modify the electrical system, if necessary.
• Select suitable equipment: Pick quality air conditioners made for marine use. Think about efficiency, noise, and compatibility.
• Consult with professionals: Get advice from technicians or HVAC specialists. They know best which system to install on your vessel.
• For extra prep: Consider optimizing insulation and installing solar panels. Clean and inspect air filters, vents, and ductwork. Monitor humidity levels too.

These steps will help make your AC more effective, plus lead to a comfy yachting experience. Prepare your yacht well and you’ll get the most out of the AC system.

Mounting and positioning the air conditioning unit

Steps to install and maintain your air conditioning unit:

• Pick the perfect spot for your air conditioning unit. Make sure it has good airflow and is easy to reach for maintenance.
• Use the right brackets or supports and ensure it is level. This will stop vibrations or noise when it is running.
• Connect the electrical parts as the maker’s directions say. All connections must be secure and kept away from water or other dangers.
• Place the unit to get the most cooling power. Look at factors like the sun, blockages, and air flow on the vessel.
• Test the unit completely before you’re done. See if there are any problems like leaking, funny noises, or faults and take care of them quickly.

You should also:

• Put insulation around the supply ducts and return air vents. This will help reduce heat moving and improve cooling performance.
• Clean and maintain your AC unit regularly. This will help it last longer and work better.

These steps help cool air travel easily, while keeping heat out. Having it in the right spot and secured correctly will keep it safe from damage, making it last and work correctly. Cleaning and upkeep will make it more efficient and help it work well.

Connecting the necessary wiring and ductwork

• Identify the electrical connections needed for your air conditioning system. Find the power source and choose the right wiring configuration. Make sure all connections meet safety guidelines.
• Set up the ductwork layout for proper air distribution. Look at factors like size, shape and material of the ducts to improve efficiency. Place them carefully to get to all areas without causing damage.
• Secure the connections by fastening wires properly and sealing duct joints with tape or sealants. Test the system completely to be sure it works well before carrying on with installation.

It’s important to remember that connecting wiring and ductwork needs precision and attention. Errors or bad connections can lead to inefficiencies or even safety risks.

For instance, a yacht owner had broken wiring and ductwork connections during an air conditioning installation . This led to regular breakdowns due to inadequate cooling and poor airflow control. After getting help, it was found that improper connections were the cause of the inefficiencies. Repairing this solved performance and comfort problems.

So, being careful when connecting wiring and ductwork is essential for a successful air conditioning system installation on your yacht. Taking into account all the technical aspects will give you better performance and longer system life, plus maximum comfort during sailing!

Testing and troubleshooting the system

Connect the power supply and check the circuit breaker panel for secure connections and no loose wires.

Make sure the thermostat is set to the desired temperature and mode.

Clean and replace air filters to maintain performance.

Inspect for condensate drain blockages and leaks.

Check the ductwork for obstructions and damage.

Captain John was cruising the Mediterranean when his yacht’s air conditioning stopped working. He discovered a malfunctioning condensate pump and fixed it himself.

Testing and troubleshooting can prevent breakdowns and ensure a comfortable climate.

Stay proactive in maintaining your air conditioning system to avoid unpleasant surprises at sea.

Tips for maintaining and troubleshooting yacht air conditioning systems:

Yacht Air Conditioning Systems: Tips for Maintenance and Troubleshooting

When it comes to ensuring the optimal functioning of your yacht air conditioning systems, it is important to follow certain tips. Here are some useful insights to help you maintain and troubleshoot these systems effectively:

• Regularly clean air filters: One of the key maintenance tasks is cleaning the air filters to prevent clogging and ensure proper airflow. This helps in maintaining the cooling efficiency and prolongs the life of the system.
• Check for leaks: Inspect the system for any leakage regularly. Leaks can lead to a loss of refrigerant and affect the cooling performance. Fixing leaks promptly can prevent further damage and ensure efficient operation.
• Clean the condenser coils: Over time, the condenser coils can accumulate dirt and debris, reducing their heat transfer capability. Regular cleaning of these coils improves the efficiency of the system and allows it to cool effectively.
• Monitor the thermostat settings: Ensure that the thermostat is set to the desired temperature and operates correctly. Incorrect settings or faulty thermostats can result in inadequate cooling or unnecessary energy consumption .
• Schedule professional maintenance: Consider hiring a professional technician to perform routine inspections and maintenance tasks. They can identify potential issues early on and provide necessary repairs or adjustments , ensuring optimal performance.

Furthermore, it is important to note that the seawater pump, fans, and electrical connections should also be regularly checked and maintained to avoid any problems. By adhering to these tips, you can enjoy comfortable and efficient air conditioning on your yacht.

Pro Tip: Keep a logbook to record maintenance activities and any issues encountered. This can help track patterns, identify recurring problems, and guide future maintenance requirements.

If you’re not a fan of regular cleaning and filter replacement, you might need to adjust your air conditioning system’s sense of hygiene.

Regular cleaning and filter replacement

Lookin’ to up your yacht air conditioner’s game? Here’s what ya need to know:

• Clean external parts, like vents and grills, to get rid of any dust or debris. Keep air flowin’!
• Filters play a big role in trapping particles. Replace ’em regularly to keep ’em workin’.
• Clean reusable filters per manufacturer’s guidelines. Prolong their lifespan!
• Have a professional inspect it at least once a year. They can spot any underlying issues.

Plus, here’s somethin’ worth considerin’: Different filters may be needed based on the system. Check the manufacturer’s guide or get expert advice. Cleanin’ products or solutions may also be recommended. Follow the instructions provided! Lastly, inspections reveal potential leaks or damage that could impact performance.

A true story: A yacht owner forgot to clean and replace filters for a long time. This caused dust to clog up the vents, putting a strain on the compressor and leading to its failure during a voyage. Moral of the story? Regular maintenance is essential. Don’t forget it!

Addressing common issues and problems

Yacht air conditioning systems are usually reliable, but troubleshooting potential problems is key to make sure they run smoothly. To help you out, here’s a table with the most common issues and their solutions:

Plus, it’s important to clean and maintain your AC regularly. This includes cleaning air filters, checking refrigerant levels, and scheduling pro inspections.

Take action quickly when these common AC issues arise. That way, you can avoid further complications and have a comfortable journey.

Fun Fact: The first functioning home AC was invented by Willis Carrier in 1902! Source: Biography.com

Hiring professional technicians for complex repairs

Professionals can provide specialized knowledge and tools for complex yacht air conditioning repairs. Plus, hiring them will save you time!

My mate learnt this the hard way. He tried to fix his own issue but only made it worse. In the end, he had to call in experts who fixed the initial problem and rectified the additional damage.

So, when it comes to complex repairs, trust the pros and get the job done right!

Conclusion: Ensuring optimal comfort and air quality on your yacht with the right air conditioning system.

Optimal comfort and air quality onboard your yacht is paramount; the right air conditioning system is vital for achieving this. With advances in technology, yacht owners have plenty of options to choose from.

A popular one is the chilled water system : a centralized unit cools the water that is pumped through pipes and coils installed throughout the yacht. This system provides efficient cooling that can keep a consistent temperature across the yacht. It also offers better humidity control and quieter operation than other systems.

Alternatively, the Direct Expansion (DX) system uses refrigerant for cooling instead of water. The main benefit of this system is its size and simplicity – making it ideal for smaller yachts or spaces with limited installation space. However, it may struggle to provide the same level of temperature control as a chilled water system.

In addition to the system type, insulation, ventilation, and filtration should also be taken into account. Proper insulation helps maintain desired temperatures while reducing heat transfer from external sources. Good ventilation ensures fresh air circulation and eliminates odors and moisture. High-quality filters capture pollutants, allergens, and dust particles before they enter the living spaces on board, and must be regularly maintained to ensure they work effectively.

All in all, selecting the right system for your yacht is essential for optimal comfort. Consider size, efficiency, temperature control options, and maintenance requirements before buying.

90% of new superyachts are fitted with advanced air conditioning systems that prioritize energy efficiency and environmental sustainability , according to Boat International magazine . So, whatever climate you’re cruising in, investing in a dependable and efficient system will maximize your yachting experience with optimal comfort and improved air quality.

Frequently Asked Questions

1. How does a yacht air conditioning system work?

An air conditioning system on a yacht works by circulating cool air throughout the vessel. It consists of three main components: the compressor, the condenser, and the evaporator. The compressor compresses refrigerant gas, which then flows to the condenser where it is cooled and turned back into a liquid. The liquid refrigerant then passes through the evaporator, where it absorbs heat from the air, cooling it down.

2. What are the types of yacht air conditioning systems available?

There are primarily two types of yacht air conditioning systems: self-contained units and split-gas systems. Self-contained units have all the components housed in a single unit, which is easy to install and maintain. Split-gas systems have a separate evaporator unit and a condensing unit, allowing for greater flexibility in terms of placement and better cooling efficiency.

3. How do I choose the right size air conditioning system for my yacht?

Choosing the right size air conditioning system for your yacht depends on several factors such as the size of the vessel, the number of cabins, and the climate in which you’ll be sailing. It’s important to consult with a professional yacht air conditioning specialist who can analyze your specific requirements and recommend an appropriately sized system.

4. How often should I service my yacht air conditioning system?

Regular servicing is crucial for maintaining the efficiency and longevity of your yacht air conditioning system. It is recommended to have your system serviced at least once a year by a qualified technician. However, if you frequently use your yacht or sail in harsh conditions, more frequent servicing may be required.

5. Can a yacht air conditioning system run on battery power?

Yes, it is possible to run a yacht air conditioning system on battery power. However, this requires a significant battery bank and a reliable power source like a generator or shore power to recharge the batteries. It’s important to properly calculate the power consumption and have a suitable electrical system in place to support the air conditioning system.

6. How can I improve the energy efficiency of my yacht air conditioning system?

To improve the energy efficiency of your yacht air conditioning system, you can take several steps. These include proper insulation of the yacht, minimizing air leaks, ensuring regular system maintenance, using energy-efficient equipment, and utilizing natural ventilation whenever possible. Consulting with an expert in marine HVAC systems can provide additional guidance tailored to your specific yacht’s setup.

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5 Best Sailboat Air Conditioners

Last Updated by

Daniel Wade

June 15, 2022

It's quite easy to imagine yourself anchored near an island, sipping juice from a young coconut without a worry in the world while aboard your sailboat. But complete comfort can only be possible if your sailboat is fitted with one of the best air conditioners (ACs).

Sailing in the hot scorching sun or tropical heat is great. But the reality that you have to deal with such hot weather and the possibility of suffering from heatstroke can be some of the major drawbacks. Sure, you can take a dip into the water or take a shower to mitigate the sweltering heat and sweat but this can only work for a few minutes if not seconds. As such, nothing is more comfortable than having your sailboat fitted with high-quality air conditioning if you want to get rid of that heat.

If you, like most of us, do not fare well in sweltering temperatures, investing in one of the best sailboat air conditioners should be the right thing to do. A sailboat air conditioner will ensure that your sailboat has the right temperature, humidity level, and airflow so that you can have a comfortable, memorable, and enjoyable sailing experience even when the temperatures are quite high.

There are hundreds of sailboat air conditioners on the market today. This makes it quite overwhelming to choose the right sailboat air conditioner for you. But as we always do, we are here to help you choose the best sailboat air conditioners that will allow you to enjoy your sailing escapades and make the boat appropriate even if you're traversing the waters with your young ones.

Table of contents

The Importance of Having a Reliable Air Conditioner on Your Sailboat

Sailing, especially in the summer, generally means that you'll have to deal with temperatures on the north of 95 degrees Fahrenheit and humidity that's close to 90%! Sailing in such temperatures is hands down challenging. Add to the fact that it can be extremely cold at night or during winter, and you have several reasons to have a reliable sailboat air conditioner installed on your vessel.

Honestly speaking, sailboat air conditioners are quite costly, especially for those of us who are cruising on a budget. However, their importance in ensuring that you have an enjoyable sailing experience and do not suffer from heatstroke can never be downplayed. With a reliable air conditioner, your sailboat will be comfortable, cool, and air will circulate in your boat, which is essential in preventing mold.

Factors to Consider when Choosing the Best Sailboat Air Conditioner

Besides being expensive, an air conditioner plays a crucial role in making your vessel more comfortable and enhancing your sailing experience. You certainly do not want to end up with a poorly working air conditioner. This is exactly why you must have a well-thought-out plan when in the market for the best sailboat conditioner.

Here are things to consider.

Size and Layout of Your Sailboat

The right air conditioner system is one that can efficiently cool or arm the entire boat without struggling. The larger the boat, the more powerful the air conditioner system you will need. Of course, you'll need more than one unit if your boat has several cabins. You'll also need space for an engine room if you choose a split air conditioning unit.

The Size of the AC Units

Modern AC units are designed to be lightweight, easy to set up, and install. These are some of the most important features to consider when choosing an appropriate AC for your vessel. You do not want to end up with a bulky unit that may not fit in your vessel.

The Air Conditioner's Power Requirement

One of the most important things to consider when choosing the best sailboat air conditioner is the unit's power requirement. Generally, you need to have generous battery banks, a powerful inverter, and an efficient source of power such as a generator or solar panel.

Most air conditioners are noisy when they operate and this can be irritating. You should go for an AC unit that is less noisy, especially if you're a light sleeper.

Your Planned Sailing Ground

Weather conditions generally affect how an AC unit will work. Of course, the unit will work a lot harder if you are sailing in hotter climates than when sailing in colder climates. With that in mind, your preferred sailing ground and its climates will determine the appropriate BTU (British Thermal Unit) that you require.

Budget and Maintenance

Keep in mind that sailboat air conditioners can be costly, so you need to consider your budget. Again, it's important to ensure that the unit is well-maintained to operate effectively without breaking down.

Best Sailboat Air Conditioners for 2020

Without wasting much of your precious time, here are the best sailboat air conditioners for 2020.

DOMETIC EnviroComfort Retrofit Air Conditioner

It has to be noted that ACs are generally costly but their importance on a sailboat can never be underestimated, especially when sailing in hot temperatures. You certainly do not want to spoil your sailing experience and that's why you have to invest in a worthwhile AC such as the Dometic EnviroComfort Retrofit Air Conditioner.

Designed with some of the most innovative features in the AC industry, the Dometic AC can perfectly cool down your sailboat and will give your vessel ideal temperatures throughout the year. Thanks to its British Thermal Unit (BTU) climate control feature, you're damn sure that you won't have any problems with whatever temperatures or seasons you face while sailing. Its R-410A refrigerant is eco-friendly and is widely recognized as one of the most environmentally safest gases.

It doesn't matter whether you're planning to sail during the hot summers or plan for ocean crossing during winter, The Dometic Retrofit will always have you back as far as the temperature of your sailboat is concerned. This AC offers 16,000 BTU per hour of cooling and reverse-heating capacities. If the 16,000 BTU per hour is so much for your vessel, this AC gives you the option of sizing down the system to perfectly fit your sailboat so that you can have maximum comfort in varying climates.

That's not all; this AC comes with reliable digital control and a self-contained AC system. It has a pre-installed air filter, which is easy to clean. In terms of installation, this AC is probably the easiest to install, thanks to its easy-to-understand installation procedures.

On the downside, you may have to contend with the system's audible fan, as well as difficulties in programming between heating and cooling. But overall, this AC is the real deal thanks to its superior velocity blowers. Of course, you'll love the fact that it is compact and very small so can fit even in the smallest of spaces.

• ‍ Comes with a pre-installed air filter, which is easy to clean
• It's compact and is built for very small spaces
• It is eco-friendly
• Comes with a high-velocity rotatable blower
• It's ultra-light
• It's energy-efficient
• It's easy to install
• ‍ It's quite noisy
• The blower doesn't move 360 degrees
• Spread controls should be improved
• May experience unintentional temperature fluctuations

MarinAire 16000 BTU/H Self-Contained Marine Air Conditioner and Heat Pump

For first time buyers, investing in the best sailboat air conditioner can be challenging, especially if you do not have the right information about the features that you need in your sailboat's air conditioner. Luckily for you, MarinAire knows what you need in your sailboat as is evidence on this amazing 16,000 BTU air conditioner.

This is unquestionably a top-quality sailboat air conditioner that's designed with built-in pressure gauges so that you don't have to constantly monitor the AC just to see whether or not it's operating efficiently. Manufactured using an SS316 stainless steel drain pan, this AC comes with a sound cover that makes it one of the quietest sailboat air conditioners currently available on the market. This sound cover can reduce up to 60% level of noise.

In terms of size, this is one of the most compact marine ACs out there. It doesn't matter how tiny your sailboat is; you'll never lack somewhere to fit in this superb AC. From its D-Smart control system, its 360-degrees blower outlet to its low start-up current, it's easy to see that this AC has one of the most innovative features in the Ac industry.

This AC comes with a distinctive design, eco-friendly R410A refrigerant, low energy consumption, and works effortlessly to make your sailing experience quite enjoyable.

• ‍ Constructed with lightweight materials
• Comes with a built-in pressure gauge
• Built with D-Smart control system for easier control
• Low start-up current
• The sound cover makes it very quiet
• Designed with 360 degrees rotatable blower
• Very compact and can easily fit in small spaces
• ‍ The electric box can be difficult to use
• The main power cord is extremely short

WeBasto AC Retrofit Unit

When it comes to the best sailboat air conditioners, WeBasto is your go-to-guys. For years, this company has been manufacturing some of the best sailboat air conditioners and the FCF Series is just a testament to what you get from this company: quality, reliability, efficiency, and affordability.

Consuming just an average of about 8.5 amps at 115 volts, this AC is quite affordable in the long run as it's probably the most energy-efficient sailboat air conditioner currently available in the market. First-time buyers will love it as it's very easy to set up and install. This is a sure guarantee that your vessel will have that much-desired cooling and heating effect with fluctuating temperatures of 45 degrees Fahrenheit and 80 degrees Fahrenheit.

This AC's compressor is very quiet and doesn't generate that irritating noise like other units while still working efficiently in keeping the cabin at favorable temperatures. More importantly, this unit is designed in such a way that you won't have to worry about servicing it for its entire lifetime.

From the onset, this sailboat AC unit may seem extremely overpriced but it will offer great value for your money in the long run. This AC is designed to be durable and efficient thanks to its superior velocity and 360-degree, three-speed blower. Although you'll have to buy the heat pump separately, this air conditioner offers some of the best features that you may require in the best sailboat air conditioner.

• ‍ Comes with a high-quality anodized evaporator
• The air filter is easy to remove and clean
• The unit is very easy to set up and install
• Comes with multi-capillary ports
• The velocity 360-degree rotatable three-speed blower is superb
• This unit is certified, reliable, and functional
• It's very quiet
• One of the most energy-efficient units
• Offers accurate temperature controls
• ‍ It's quite pricey
• You'll have to buy the pumps separately
• The condenser and compressor are faulty and need to be replaced

MarinAire 14000 BTU/H Self-Contained Marine Air Conditioner

MarinAire is a revolutionary manufacturer in the AC industry and is credited with bringing to the fore the self-contained marine air conditioner. This model is widely popular among boat owners thanks to its practicality, innovativeness, and affordability.

This sailboat air conditioner is designed with superb built-in pressure gauges that are in place to ensure that the entire unit works perfectly without any hitch. It also comes with the MSB Integra compressor that's built with an excellent sound cover to ensure that the noise levels of the unit are significantly reduced by nearly 60%.

The unit's state of the art design not only makes it sleek and modern but makes it a lot easier to use and maintain. Its 360-degree rotating blower is durable and reliable while the entire unit is made using lightweight materials. This is essential in ensuring that it can fit in compact spaces.

It's also structured with the eco-friendly R410A refrigerant, which makes it highly energy-efficient. This unit is arguably one of the best sailboat air conditioners in terms of durability, functionality, and ease of installation.

• ‍ It's highly energy-efficient
• It's eco-friendly
• Offers superb cooling and heating efficiency ‍
• O ne of the quietest units
• Very lightweight and compact
• Easy to install and maintain
• Offers good value for money 
• ‍ Not suitable for other types of vehicles
• Not ideal for home use

MarinAire 11000 BTU/H Self-Contained Marine Air Conditioner

If you've been looking for a smaller but highly reliable sailboat air conditioner, the MarinAire 11,000 BTU/H AC can be your best solution. Like most MarinAire units, this self-contained AC comes with excellent low and high-pressure gauges to ensure that it works efficiently in all climates. This means that you won't have to worry about setting it manually; it will do everything automatically and that's how many boat owners love it.

Its superior centrifugal 360-degree rotatable blower will ensure that the entire cabin is easily conditioned and kept at desirable temperatures. In other words, you won't have to move from one corner of your boat to the other just to feel the cool or warm breeze. Like most boat owners, you certainly want a unit that carries on with its job without much fuss. Well, this AC unit is designed with a superb sound cover to reduce the level of exasperating noise that's widespread in most sailboat AC units.

This unit is designed with an excellent Toshiba R410A refrigerant that is not only eco-friendly but a true guarantee of superior efficiency. When compared to other affordable options out there, this AC unit has everything that you'd want in a perfect air conditioner for your sailboat. It comes with a remote temperature sensor, intuitive display, and more importantly, it's energy-efficient.

This is, without a shred of doubt, an innovative sailboat air conditioner that will take your sailing adventures to the next level. You won't have to worry about getting exhausted because the temperatures are so hot. It's easy to set up, install, operate well and will serve you diligently for many years to come.

• ‍ Comes with an excellent 360-degree blower
• It's lightweight
• It's easy to set up and install
• It's one of the quietest units
• It's sleek, modern, and compact 
• ‍ The control box is bulky
• The control panel is difficult to operate

Related Articles

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HVAC for Yachts

Ongoing innovation and R&D enables Heinen & Hopman to create yacht HVAC systems that meet the highest possible comfort requirements. Cooling, air quality and sound levels contribute significantly to onboard ambience. Using insulation, absorption, special custom-made air conditioning casings, mufflers and low air speeds, Heinen & Hopman has developed super silent HVAC systems for yachts.

The highest quality as standard

At Heinen & Hopman, special multi-stage air filters – with the filter quality of an operating theatre and the option to clean parts of the air conditioning system – are installed as standard. One of the latest developments in this field is the integration of active bacteria and virus removal filters in our systems.

HVAC system innovations

Thanks to a process of constant development, Heinen & Hopman has introduced various innovations in the field of HVAC in which sound and space as well as efficiency and the environment are key factors.

Vessels in yachting

Motor yachts

Sailing yachts

Expedition yachts

Superyacht support vessels

Our working method, how we work in 5 steps, 1 - consultancy & pre-engineering.

Support with your inquiry by preliminary sizing of equipment, space reservation or excellent advice in system design. Writing a technical specification or assessing general arrangements are part of our daily business.

2 - In House project execution

Design and engineering of the best HVAC solution for your vessel after which our project teams prepare each project in every detail. At the same time the innovative cooling equipment is manufactured and tested in one of our factories.

3 - Delivery

Export or local road delivery, we transport all products according the 2020 Incoterms.

4 - On Site project execution

Installation by or under the supervision of H&H mechanics. Our commissioning engineers balance and start each system for handover to the client.

5 - After Sales

Clients can rely on our global service and 24/7 support.

Black Pearl

Game Changer

Galactica Super Nova

H&H HVAC and Refrigeration for Yachts

No matter how much is spent on interior decoration, fabulous facilities and high-tech luxury, the ambience onboard a superyacht largely depends on the air-conditioning. Heinen & Hopman has the solution.

No matter how much is spend on interior decoration, fabulous facilities and high-tech luxury, the ambiance onboard a superyacht largely depends on the air conditioning.

Thermowell, 100% custom air conditioners for your yacht

Thermowell manufactures technologically advanced and 100% custom air conditioning systems to create the perfect temperature on your yacht and superyacht

A specialization born almost by chance but which has proved successful over time. ” One day, my father Renato , owner of a company that dealt with air conditioning systems and a lifelong boating enthusiast , received a request from a friend who wanted to install an air conditioning system on his yacht – tells Mattia Napoli, Technical Sales Manager at Thermowell – Since then, after years spent in the field of civil, industrial and commercial plant engineering, my father specialized in the boating sector, starting to produce air conditioners for boats of all sizes , from registration-free boats to ships, passing through superyachts”.

” Modern boat owners look for high-tech, silent and eco-friendly systems, capable of modulating consumption while minimizing ventilation noise and respecting the surrounding environment . In short, they look for the best – continues Mattia Napoli – Our company is constantly evolving to provide up-to-date air conditioning systems”.  

Thermowell products are divided in two distinct segments: series production, which includes air-conditioning systems between 5,000 and 150,000 BTU/h ; and custom production, with 100% custom-made solutions. Among the standard products, the IZY kit (picture above) stands out for its originality and easy installation. It is an innovative and exclusive marine air conditioner which allows a full Do It Yourself installation of an air conditioning system inside a boat. The sea water pump as well as all electric and electronic components are already installed inside the air conditioner, thus making the installation extremely quicker and easier than a traditional system.

As for the custom production, instead, “ the owner that comes to us can ask for a turn-key solution entirely designed around his needs. Our clientele includes many shipyards and designers that can therefore choose the system that best suits their needs, starting with the c alculation of the thermal loads of the various environments to be conditioned, the size of the grids and the air diffusion vents , the size of pipes and pumps, the calculation of electrical loads and the supply of three-dimensional drawings of the equipment to be installed to facilitate the design of the boat “.  

Following the Covid emergency, in fact, Thermowell is developing a range of ionizers and UV-C rays that can be inserted in the air handling units (AHU) capable of purifying the air upstream: this is an application to be integrated into the air conditioning which, without taking additional space, sanitizes the spaces and will certainly be in great demand not only on board large ships, but also on yachts, superyachts or charter boats.  

“ What’s well-being on board? It’s knowing that your air-conditioning system is easy to use, easy to maintain and that, in case of problems, you can rely on an omnipresent company – concludes Mattia Napoli – We at Thermowell are always there “.

www.thermowellmarine.com

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Why Yacht Air Conditioning is Important

Do yachts have AC systems on board? The answer is typically yes.  Yacht air conditioning systems gained popularity due to their pivotal role in enhancing onboard comfort during maritime adventures. These systems offer respite from the elements, ensuring a pleasant ambiance regardless of external conditions. With the ability to regulate temperature and humidity, marine AC systems create a haven for relaxation, rest, and socializing. As yachts and boats become integral sanctuaries, the demand for optimal comfort rises. Moreover, these systems contribute to preserving the integrity of the vessel’s interior, safeguarding furnishings, and electronics from the adverse effects of heat and humidity. The popularity of marine AC systems also stems from the advancement of energy-efficient technologies, aligning comfort with sustainability. The expert providers if marine HVAC solutions at Mabru Power Systems understand the want to learn more about this marine appliance and provide all the information you’ll need to know in this article. 

What Yacht Air Conditioner Units Bring to the Table

The contemplation of installing a yacht air conditioning system introduces a strategic dimension to onboard comfort. While our intention is purely informative, let’s explore why considering a yacht AC system can be a pivotal choice for aficionados of maritime journeys.

Foremost, the allure of yacht AC lies in the creation of an optimal haven, irrespective of external conditions. Sailing through regions of scorching heat can mar the joy of voyages. A yacht AC system seamlessly regulates temperature and humidity, ushering in an oasis of cool respite amid the elements.

Beyond mere temperature control, a marine air conditioner cultivates an inviting ambiance that amplifies the yachting experience. From undisturbed rest to seamless socializing, it grants the luxury of unwavering comfort, transcending weather constraints. A yacht AC system also safeguards the yacht’s interior integrity. Excessive heat and humidity can compromise furnishings, electronics, and aesthetics. A functional AC system safeguards this investment, preserving the optimal conditions for your yacht’s interior components.

It is also worth noting that the presence of yacht AC systems contributes to the vessel’s market value. Should the prospect of a future sale arise, a yacht equipped with an AC system will resonate with potential buyers, symbolizing comfort and pragmatism. The installation of a yacht AC system ventures beyond mere temperature regulation. It’s about sculpting a haven of comfort, conserving your yacht’s interior, and enhancing its allure in the market. While the ultimate decision rests with your yachting inclinations, the myriad merits of onboard climate control remain undeniable.

Marine HVAC Units Come in Many Styles

The panorama of HVAC for yachts unfolds in a rich diversity of forms, responding to the unique demands of each vessel. We aim to illuminate rather than sell services, empowering you with knowledge.

These yacht HVAC choices encompass both AC (alternating current) and DC (direct current) systems, catering to varying power scenarios. AC systems, suitable for yachts with steadfast power access, offer robust cooling capabilities. Meanwhile, DC systems harness the yacht’s battery reserves, ideal for energy-conscious sailing or areas with limited electrical outlets.

Within these categories, two prominent configurations surface: self-contained and split system units. Self-contained yacht air conditioning units house all components within a single entity, simplifying installation. These solutions align well with smaller yachts or those prioritizing straightforward cooling.

In contrast, split system units segment components into distinct indoor and outdoor units, amplifying cooling efficiency and flexibility. Particularly valuable for larger yachts, these systems masterfully address multi-zone cooling requirements.

The selection, whether AC or DC, self-contained or split marine HVAC systems, orbits around yacht dimensions, power resources, onboard layout, and cooling efficacy. By harmonizing your choice with your yacht’s intricacies, you craft a maritime haven tailored to your voyage. As you navigate through these options, our commitment is to furnish information, guiding you toward yacht HVAC selections that magnify the pleasure of your maritime escapades.

Get in Touch With the Mabru Air Conditioning Experts

Elevate your vessel’s comfort with our meticulously curated yacht air conditioning solutions from the Mabru Marine AC Store . Our steadfast commitment to excellence positions us as leaders among marine HVAC companies. We extend a comprehensive range of air conditioning solutions, finely tuned to amplify your maritime voyages, especially during the summer. Anchored by premier marine air conditioners, our offerings span a wide spectrum.

Are you navigating the intricacies of selecting the appropriate marine air conditioner or seeking insights on installation and maintenance? Our experienced experts stand ready to assist. Tailored advice and expert consultation empower you to navigate choices confidently and knowledgeably.

For those yearning to explore the depths of marine air conditioning, our illuminating air conditioning blog is here. Brimming with articles covering a diverse array of AC-related topics, it serves as a guiding beacon to deepen your comprehension and enhance your boating encounters.

If the allure of owning a Mabru air conditioner captivates your interest, do not hesitate to connect with our team today or locate a dealer nearby . As we embrace the pursuit of maritime comfort, consider us your partner in transforming your boating excursions into remarkable and extraordinary journeys.

Related Readings

• How to Get Proper Marine Air Conditioning Size
• Choosing the Right Marine Air Conditioning System

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Air Conditioning for Sailboats

Long-term test compares ac choices.

One of the great joys of sailing is the state of near nakedness (literal and figurative) to the wind, air, and sea-and the wisdom that comes with it. From that perspective, climate control seems antithetical to the sailors art. But being Practical Sailor (not Philosophical Sailor) we recognize that even the hardiest round-the-world racers seek temporary refuge dampness, cold, and heat. And for one looking to make the transition from the landlubbers life in temperate climates to full-time cruiser in the tropics, the idea of air-conditioning-despite its huge power demands-is alluring.

Today’s air-conditioning units are lighter and more power efficient than they were ten years ago, but they are still relatively expensive, regarded as luxury items on most boats. The expense of a professionally installed unit on a 35-footer can be as much as a new set sails.

Whenever you are plunking down that much money on a piece of gear, the first question that comes to mind is durability. How long will it last? So, in this, our first in a series of articles on climate control well look at types of air-conditioning and prospective life spans in the real world. (For those who are headed northbound and exploring heat options see Playing it Safe with LPG Heat , Practical Sailor , December 2015).

Photos by Drew Frye

What We Tested

This long-term comparison focused on two products from Dometic, a world leader in this field-the Dometic CruiseAir 6,700 BTU portable air conditioner and the Dometic 10,000 BTU Turbo Air Conditioner. The units were chosen as representatives of two popular types of integral air conditioning units designed specifically for cruising boats, and were confident that most of our findings can be applied generically to each type. To put these two units into context, we compared their specifications, performance, and attributes to those of portable air-conditioners designed for home use but often used by live-aboard cruisers. A fourth type of air conditioner, the split gas system, which allows separate installation locations of the compressor (usually in the engine space) and the condenser coils and fans, will be looked at in a future article. A fifth type, the RV-type permanent roof-top (or hatch) mount is only really suitable for house boats, or boats that are permanently moored to a dock.

Both systems were installed on the same boat-a PDQ 32 – for an extended period. PS tester Drew Frye, who carried out the testing, has several years of experience using with each of these units on board. For comparison sake we included a portable window unit and a portable ducted air-conditioner, readily available at local home supply stores. Since we did not test the non-marine products, we relied on manufacturer supplied data for comparison.

How We Tested

Along with durability, noise and efficiency are the key concerns for most buyers. Using a calibrated decibel meter we took multiple noise readings from the two air conditioning units at a distance of one meter. We took current readings using a Fluke multimeter to compare energy efficiency and peak current loads. Finally, we observed any other notable differences in performance. The data is recorded in the adjacent tables.

Observations

Without question, portable units are cheaper than fixed units. The CruiseAir 6,700 BTU is no longer in production, but Pompanette makes a similar 6,000 BTU unit available from West Marine for about $1,200. Contrast this to $2,200 plus $1,200 in installation parts and materials for the Dometic Turbo 10000 BTU unit. Fitting the ducts and installing hardware for the Turbo can add two days to the DIY job. If you opt for a professional installation, this can raise the total cost to more than $5,000. The expense of a professionally installed permanent AC is a little less painful when you consider that the AC will increase the boats resale value-especially in warmer climates.

Is a DIY installation practical for a permanently installed AC? Sure, if you’re prepared to run wires and duct work and install through hulls and plumbing. The vendors say it can be done in an afternoon, and this is possible for skilled workman in an ideal situation. However, if the job requires complicated ductwork, allow a day for planning and three full days for installation. If you do decide to do your own installation, be careful not to compromise any structural bulkheads when cutting out passages for ductwork.

Follow the instructions rigorously. We have seen many botched installations, both amateur and professional, almost always because the installer did not follow the instructions. To save money on ductwork, buy the insulated duct and inlet/outlet fittings from a home improvement store or an RV store rather than from the manufacturer or a marine equipment supplier.

Floor mounted portables, connected to the outdoors via flexible ductwork, are another option. These are less expensive, only $250-$500 for comparable sizes, but they are still bulky, and they must be secured while the boat is underway. They are not a long-term solution for the mobile cruiser looking for maximum efficiency, but for the low budget cruiser stuck on the dock they are an affordable alternative to sweltering.

Avoid single-hose models. These draw cooling air only from inside, and exhaust hot air out through a duct. Since the air within the boat is often hotter and more humid than the outside air, this can reduce the cooling efficiency by as much as 50 percent.

A dual-hose unit recirculates indoor air and also draws air from outside, which improves efficiency significantly. Dual hose units are all greater than 10,000 BTUs. Some require a drain hose, while others evaporate the water into the hot air stream. Some can also operate as high capacity dehumidifiers.

Noise. A permanently installed air conditioner runs on seawater instead of air cooling, eliminating the often noisy cooling air fan required of all portable units. Testers installed the Dometic Turbos compressor and circulating fan inside one of the PDQs salon settees. With the settee seat cushions in place, the unit was very quiet-air hissed through the vents and the compressor emitted a low rumble.

The noise difference is considerable. Testers recorded 67 decibels for the installed Dometic Turbo vs. 75 decibels the smaller portable CruiseAir. Remember that a 10 decibel increase represents ten times the sound energy-so the difference is significant.

Tone. The sound pitch can also make a difference. The installed Turbo was lower in pitch and less intrusive than the CruiseAir. Quiet conversations were nearly impossible when the CruiseAir was running, while the noise of a permanently installed AC is can be nearly unnoticeable if installed correctly. Since the industry sound rating system is not directly comparable our own ratings for installed units, we did not rate the untested units for noise. Experience tells us that the standup and window portables will be closer to the hatch-mounted CruiseAir in terms of noise.

Distribution of cooling. With a portable air conditioner-any type-the person sitting next to it freezes. Distribution through the cabin can be aided by fans, but it will always be uneven. With installed air, vents take the air wherever you want it. However, it is important that area of the supply vent inlets falls within a recommended range. If a vent is too small efficiency suffers. If the inlet area is too big, the flow of cooler air is reduced.

The return volume must also meet the manufacturers minimum requirements, and the return inlet should not draw air from the bilge or engine space, which would not only spread odors and be inefficient, but also present a hazard.

Maintenance. The portable units require no maintenance, other than annual air filter cleaning. A permanent, central air conditioner requires regular raw water strainer cleaning, every 8 to 100 hours, depending on the amount of sea grass and nettles in the water. An external strainer is also required. This, too, needs to be checked for blockages, especially in high fouling areas.

Durability. The Dometic CruiseAir portable survived 18 years of seasonal use without complaint. Frye defied manufacture warnings, leaving it in place during many coastal passages on his catamaran, since it was too heavy to reasonably move and occupied too much space in the cabin. He lashed it down tightly, but that didn’t save it from spray and occasional green water. In the process of moving it, it took a few hard knocks. Eventually, the clamps on the leveling mechanism began to slip, but they were easily replaced with pins that were fabricated from fiberglass tent poles.

Weight. Excess weight is always a concern for sailors. The Pompanette 6,000 BTU unit weighs 53 pounds and the Dometic Turbo 10,000 BTU weighs 47 pounds-plus 17 pounds worth of installation parts (64 pounds total). The added weight of the installed unit is carried much lower, reducing pitching and lowering the center of gravity.

Storage Space. The compressor and condenser coils will occupy one small locker, and you’ll give up parts of other lockers for the duct work. This is the time for that house cleaning you’ve been putting off. Portable units require space when stowed for sailing, preferably where they are out of the way.

Power Requirements. The Pompanette 6,000 BTU portable draws 17 amps to start and 6.9 amps running. The Dometic Turbo, 10,000 BTU draws 14.5 amps to start and 6.7 amps running. It incorporates Dometics Smart Start capacitor and controller to reduce load spikes during start-up. The Avallon 12,000 draws a whopping 10.8 amps running, pressing the maximum safe running load of a 15 amp circuit. Clearly, the Dometic unit is the most efficient, and that translates not only into lower power bills, but also into reduced installation complexity. The Dometic, aided by the smart start controller is easily served by a 15-amp circuit, while the Avallon portable is bumping right up against the maximum.

Inconveniences. Carrying a 55-pound AC unit around the side decks, on-and-off the dock, and down below can be dangerous. Even with two people, getting it down through the companionway is still tricky. What is the cost of a single serious injury? When the unit is stored below for a foul weather passage, it must be well secured and takes up valuable space. If left in the deck hatch during fair-weather sailing, it blocks the view, blocks natural ventilation through the hatch, and snags every sheet that comes near it.

No matter how carefully fitted, hatch units leak rainwater during squalls. Because the close proximity to humid air where they fit through the hatch, most drip condensation. Window units and dual hose units also have concerns.

The only inconveniences of installed AC are opening the seacock and cleaning the raw water strainer. Locate both so they are easy to access. The strainer should have valves on both sides to reduce water spillage. The seacock should be closed when not in use (safety) and for 24 hours every few weeks. Closing the seacock for 24 hours prevents marine growth by eliminating oxygen and by allowing the concentration of copper ions in the water, leached from the copper coil, to reach preventative levels.

Hatch Mounted Units

A step above home store window units, hatch mounted units are a good temporary solution for dockside living while your moored to terra firma doing boat work or rebuilding the cruising kitty.

Dometic CruiseAir 6,700 BTU

We knocked this one around, it took green water right over the top several times (not while running), and though noisy and annoying to have on deck, it just kept running. I doubt many users abused theirs any more, although they may have more hours on them.

Bottom line: Recommended as a second-hand purchase.

Pompanette 6000

Very similar in size and weight to the CruiseAir, we’ve observed them on other boats but not studied them in depth. Those users we interviewed reported zero mechanical problems.

Bottom Line: Consider saving up for installed air.

Installed Air Conditioning

This is the option best suited for long-term cruising, because all of the critical components remain below decks protected from the elements. This feature is especially important for saltwater sailors. The premature failures with installed air systems that we know of stem from installation shortcomings, usually in the raw water suction design.

High intake loops that collect air result in unreliable operation. Oversized water pumps cause premature wear on the coil-bigger is not better in this case. Stray current can eat the cooling coil on the inside, and water leaks can drip seawater on the cooling coil, rotting it from the outside. Low voltage due to undersized wire or poor connections can strain the compressor. Properly installed, the unit should be as reliable and durable as a shore-based unit.

Dometic Turbo DTU 10 10,000 BTU

Dometic dominates this field with several lines of air conditioners to meet specific needs. Its smallest unit is the 3,500 BTU Cuddy, we opted for the 10,000 DTU 10 model.

This unit is quiet and efficient. Although the installation is time-consuming, the several days of boat yoga are well worth it. The very low power draw is a big bonus, allowing us to stay at marinas with modest power supplies.

A DIY installation requires good power tool skills and common sense (see aforementioned caution about penetrating structural bulkheads). It will likely require several days of steady work, or you can pay a contractor $1,000-$2,800, depending on the complexity of the installation and location of your boat.

Bottom line: Installed air is certainly the Best Choice, if you have either the DIY skills to do it right, or the dollars to hire someone.

Portable Uprights

There are dozens of brands of upright, dual hose-air conditioners. Friedrich is one brand that tested well with Consumer Reports, but their test field was limited. Our advice if you go this route is to compare warranty coverage and buy from a reputable supplier.

Avallon APAC120S

The advantage of caster-mounted units is that, unlike hatch mounted portables, you don’t have to lug them above and below decks. When you get the urge to sail they can be wheeled into a corner and secured, although they still eat up space. They are generally very quiet. Because they use a different BTU scale, a 12,000 BTU unit is closer to 5,500 BTU.

Finally, although they claim to evaporate all of the condensate back into the hot air exhaust, we still observed a few ounces of condensate on the most humid days. There is a pan with a sensor-remember to check it daily.

Bottom line: If you need quick AC for summer, this is a good solution while you make up your mind.

Window Units

Window units are clearly the shoestring sailors choice. Look for familiar brand names with good warranty coverage. Most today come with a remote control, which comes in handy.

Kenmore 10,000 BTU (#77060)

A dime a dozen, these are a cheap solution for the boat that spends a lot of time at the dock. We’ve seen them installed in companionway hatches using modified hatch boards, and over deck hatches, adapted to fit using some manner of home-made carpentry.

The former is more compatible with the design since the faceplate is meant to be in the room. There is also a YouTube video showing on how to modify one of these to operate below decks (although it requires quite a bit of metalwork).

Costing as little as $120 on sale, these can be the bargain solution for a small boat in a warm climate. Stowability and durability-especially in a marine environment-are the biggest drawbacks.

Bottom Line: A window unit can be a cheap, short-term solution while you make up your mind.

Conclusions

Portable air conditioning units can be durable and reliable, but they are inconvenient. Installed air conditioning adds considerable expense, particularly if professionally installed, but there is some recovery in increased resale value if properly done.

Generally these units are brought into service when the boat is dockside for long periods of time. If you are on the move between marinas – the stow and set-up routine with a portable can get tedious. But if you are held captive in one spot by circumstances and need some relief from the heat and stillness-a window mount or upright dual-hose will civilize your summer.

Stay tuned as we dive deeper into the world of compressors and coils and various options among split-gas systems.

Portable air conditioner can meet the needs of a casual cruiser, but long-term cruisers in tropical climates, especially those with boats greater than 40 feet long, will be better served by installed systems.

Nearly all marine air-conditioning problems can be partly traced to poor installation. A key step is to create a schematic that maps out the wiring, plumbing, ducts, and vents. Due to the potential fire risk with these systems, if you have doubts about wiring or fuses, you should consult an electrician. Although you don’t need to be an expert to succeed with a DIY installation—it helps if you are a jack of all trades. And you need to do your homework.

1. A Fein Multimaster simplifies cutting in close quarters. Be careful not to compromise structural bulkheads or liners. 2. Measure twice, cut once. An inlet vent, mounted low in the main saloon fits snugly in its cutout. 3. We fabricated some of the plenums, transitions, and elbows, others were meant for use with clothes driers. 4. An above-the-waterline loop in the cooling water outlet (white hose) prevents backflow into a heeled boat. 5. Glue-on studs are a big help if you cannot through-bolt. These studs are from Duckworks. Weld Mount is another source. (See “ Glue-on Fasteners ” PS July 2017).

Properly plumbing the AC system is one of the most important installation tasks, not only from a functional standpoint, but also safety. In order to meet the American Boat and Yacht Standards for through hulls, the seacock needs to be able to withstand 500 pounds of static force for 30 seconds. This typically calls for a flanged base that is supported with screws or through-bolts. A backing plate that incorporates studs is one of the most sensible ways to meet the standard because it avoids the need for additional holes in the hull.

1. The home-made backing plate assembly is tested before gluing, from left: long screw used for clamping during gluing, UL certified Marelon through-hull, the assembled seacock and backing plate. 2. The backing plate with studs is clamped in place as epoxy glue cures. 3. A t-connector simplifies draining for winterizing, ensuring no low spots. 4. The water should rise smoothly from intake, through the strainer, to the pump. If any air pockets exist, the pump will not prime after a short peried of sailing (waves drive air into the pipes and the pump cavitates).

• West Marine

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One suggestion, if you are using your AC system in places like Florida – include provisions to flush the piping. This includes connections from the seacock to the thru-hull, with connectors that are easy to get to and install. plus valves, if you have more than one unit on the boat. You will have to periodically use Barnacle Buster to clean out the pipes, and this is best done in recirc mode with a 5 gallon bucket. Also, think about installing a strainer that will accept a pool-cleaner chlorine tablet (or a sizeable piece of a tablet), to keep the piping clean.

Here, this is really useful comment, many thanks!

I am sorry but this article does not help. You should have tested same type of ac across different brands. But here, you are comparing apples to oranges….

Thank you for this article. Very encouraging in a safe manner.

We have a 1998 Beneteau Oceanis 321. We bought the boat in 2015. The first owner installed a Mermaid M6 6,500 BTU air conditioner shortly after he bought the boat. It has a heat cycle. It is designed to cool 550 cubic feet. We keep the boat on Lake Erie and sail six months a year. It works very well. No major repairs. The only repairs have been that we have had to replace the water pump in 2016 and 2022 due to wear and tear on the impeller.

We use the heat cycle in the spring and the fall. We leave it on most of the time at our dock. It keeps the humidity down in the boat. We have two effective 12v fans that we can run when we are not on shore power. We run it off 15 amp, 115 volt shore power.

I have experience as a yacht broker.

I agree with the advice in your article. I would add the following suggestions, 1. If at all possible buy a sailboat with factory A/C. The installation should be neater and easier to maintain. As the article states, most faults are with the installation. The yard who installed ours did a good job but I have seen many others that are less than seamanlike. 2. If installing an A/C unit, ensure you have an easy way to bleed air out of the water inlet plumbing to the pump. We have to bleed the system every spring after winter haulout. It is a pain in our boat. There are self priming pumps available but they are two to three times more expensive. 3. If installing an A/C unit, ensure you have a relatively easy way to clean the inlet water filter strainer. We have to clean the strainer about once a month in the summer. It is a pain on our boat. 4. If you are installing an A/C unit, ensure you install effective sound proofing. Ours is a bit more noisy than the factory A/C units I have experience with.

We have a Swallow Craft Swift 33 sailboat. It is a very large capacity 33′ boat. After almost a year of exploring options for AC we put in an overhead RV unit in the main cabin overhead hatch. One season in Florida and so far, we are very pleased. The unit is a Houghton B3500. It is low profile with 13,000 BTUs of cooling and 12,000 BTUs of heat. We just could not afford the lazarette space for a built in.

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