MSWA9C2 | 9000 BTU | 208-230V | 50-60hz
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2-Year Compressor Warranty*
1-Year Manufacturing Warranty*
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Pickup available at Miami, FL
Usually ready in 24 hours
| MSWA9K2 | MSWA9C2 | ||
|---|---|---|---|
| Voltage | V/Hz | 110-120V AC/50-60Hz | 208-230V AC/50-60Hz |
| Cooling Capacity | BTU | 9000 | 9000 |
| Heating Capacity | BTU | 10000 | 10000 |
| Max. input consumption | Watt | 950 | 950 |
| Running Current | Amp | 7.5 | 3.75 |
| Starting Current | Amp | 13.2 | 6 |
| Water Flow | GPH | 255 (at unit outlet- not a pump rating) | 255 (at unit outlet- not a pump rating) |
| Indoor air Flow (Hi) | CFM | 300 | 300 |
| Noise Level | dB(A) | ≤42 | ≤42 |
| Dimension (W*D*H) | in | 24 x 14.7 x 13.7 | 24 x 14.7 x 13.7 |
| Net Weight | lbs | 60 | 60 |
| Refrigerant Type | R410a | R410a |
| Dim | in | mm |
|---|---|---|
| A | 24 | 577 |
| B | 8.9 | 266 |
| C | 13.7 | 348 |
| D | 14.7 | 374 |
| E | 6 | 152 |
| Water inlet/Outlet | 5/8 | |
| Drain pan connection | 1/2 |
| Dim | in | mm |
|---|---|---|
| A | 5.63 | 143 |
| B | 3.7 | 93 |
| C | 0.83 | 21 |
| D | 0.47 | 12 |
| E | 4.74 | 120 |
| F | 2.76 | 70 |
| Cable Type: | CAT6 | Pinout: T-568B |
If you have any questions, you are always welcome to contact us here.
We are happy to help!
Quick Shipping Information
For domestic orders within the United States you may complete checkout online. For international inquiries, please send us an email at support@marinaire.com.
-Signature is required on all orders over $500- For more information click here.
Customer Support
Thinking about DC power?
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Why MarinAire?
MarinAire sets the standard in the marine air conditioning industry with cutting-edge patented technology. Click here to learn more about our company.
The 9,000 BTU self-contained marine air conditioner and heat pump is designed for boats and yachts operating on 220V power, providing efficient cooling and heating for small to mid-size cabins. This compact, all-in-one marine air conditioning system delivers reliable performance while conserving valuable onboard space.
Built for demanding marine environments, the system offers quiet operation, consistent temperature control, and reliable performance in humid, high-vibration conditions commonly found onboard.
9,000 BTU cooling capacity for effective temperature control in mid-size cabins and enclosed marine spaces
Integrated heat pump provides both heating and cooling in one all-in-one system
Self-contained marine AC design simplifies installation and servicing
Compact yet powerful footprint balances performance with efficient use of onboard space
Built-in sound shield helps reduce operational noise for improved onboard comfort
Wi-Fi–enabled thermostat included for precise temperature control and remote access
360-degree rotatable blower outlet allows flexible ducting configurations
Quiet, efficient operation suitable for day and overnight use
Marine-grade components designed to withstand humidity, vibration, and corrosive conditions
Dehumidification function helps reduce onboard moisture and condensation
208-230V electrical compatibility with common marine power systems
This unit is designed exclusively for marine use and integrates the compressor, condenser, and evaporator into a single housing. Optimized airflow and efficient heat exchange provide dependable performance across a wide range of operating conditions. All materials and components are selected to meet the demands of onboard environments, making this system a reliable solution for compact, high-output marine climate control.
| MarinAire | Competitor | |
|---|---|---|
| Low Starting Current | ✓ | ✗ |
| Built-In Sound Shield | ✓ | ✗ |
| Touchscreen Wi-Fi Thermostat | ✓ | ✗ |
| Rotatable Blower | ✓ | Sometimes |
| Charging Port | ✓ | Sometimes |
| Bonding Wire Terminals | ✓ | ✗ |
| Titanium Coils | ✓ | Sometimes |
| Stainless Steel Drain Pan | ✓ | Sometimes |
| Error Monitoring | ✓ | Sometimes |
| Dehumidification Function | ✓ | ✗ |
| Spare Temp/Humidity sensor | ✓ | ✗ |
| Timer Function | ✓ | Sometimes |
| Self Installation Does Not Void Warranty | ✓ | Sometimes |
| Phone Support for Error Codes | ✓ | ✗ |
| Standard Duct and Hose sizes | ✓ | Sometimes |
Our compact marine air conditioners are designed to fit tight spaces—checking technical specifications ensures the perfect match.
There is no single “one-size-fits-all” seawater pump for marine air conditioners. The correct pump size depends on three factors: the air-conditioning unit, your specific installation, and the pump’s performance characteristics.
Each model lists a “Water Flow” value in the Technical Specifications tab. This rating refers to the required water flow at the unit outlet, not the pump size itself.
Because water flow is reduced by hose length, fittings, and vertical lift (head pressure), the pump selected must be capable of delivering the required flow at your actual installation head. Always reference the pump’s performance curve to confirm this.
(Assumes average hose lengths and typical installations)
If you are running more than one air conditioner:
Tip: If your installation involves unusually long hose runs, multiple elevation changes, or shared manifolds, consult the pump flow curve or a marine HVAC professional to ensure proper sizing.
We know space on any marine vessel is limited and valuable! Our units are designed to be among the most compact in their class, but every installation space is different. Always measure your available space before purchasing.
Refer to the “Dimensions & Drawings” tab under each model for exact measurements, including overall size and service clearances. Confirm that there is adequate room not only for the unit itself, but also for hose connections, wiring, airflow, and future maintenance access.
Tip: If your space is tight or irregularly shaped, reviewing the dimensional drawings before ordering can help avoid installation issues.
That depends on your specific installation.
Each unit is pre-charged, and includes the core components required to operate the system:
Installation-specific items — such as seawater pumps, plumbing components, ducting, venting, grilles, and fittings — vary by vessel and layout and are not included. These items must be selected separately based on your setup.
If you are replacing an existing marine air-conditioning unit, most installations can reuse the existing set up.
Many customers refer to this as a ‘plug-and-play’ replacement.
No. These units are designed exclusively for marine applications and are not supported for use outside of a marine environment.
Each marine air conditioner requires hundreds of gallons per hour of water flow from an open loop system. Water tanks, pools, tubs, etc. will not work.
They are also not UL-listed for use outside of a marine environment and are not approved for non-marine installations.
Generator size depends on your specific MarinAire model, voltage, and what other onboard loads you plan to run at the same time. We recommend consulting a qualified marine electrician for final generator selection and installation. For a quick starting point, you can use our Generator Size Calculator, which provides a general estimate based on your unit and rounds to common real-world generator sizes.
You can run MarinAire on DC (battery) power by using a pure sine wave inverter to convert your battery bank’s DC into AC power. Because inverter sizing, wiring, and battery performance vary by installation, we strongly recommend consulting a qualified marine electrician for accurate system design and verification. If you’d like a starting point, our Battery Power Calculator can provide a general estimate of inverter size and expected runtime based on your unit and battery setup, but results may vary in real-world conditions.
MarinAire is an American company, and our systems are invented and engineered in the United States.
Our air conditioners are built using hundreds of globally sourced components from top quality manufacturers, with parts produced in multiple countries (Japan, Germany, etc.) to meet performance and reliability standards. Final assembly is performed in China, followed by multi-stage testing and quality verification.
Before shipment, each unit undergoes final inspection and quality control in the United States to ensure it meets our performance, safety, and reliability standards.
"Works great, we live on a 41 ft sailboat and this cools down the boat quick. Very quiet back there. We love it."
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This is the second unit that I've purchased from MarinAire. I have been replacing original units on my 2006 boat. I ordered this unit at 2:30 PM on a Friday, and it was on my doorstep at 1:20 PM the following Monday! Very quick to get out of the door!
If installation is anything like the first one, it will be a breeze. C'mon Spring!
I was impressed with the packaging and the quality of the unit appears to be exactly as I was hoping for. Time will tell but for now…this unit is all about all I could ask for.
Extremely quiet, light weight, solid airflow.
I replaced a unit from 1999 what a difference.
Took about a half day, had to lengthen hoses and install elbow fittings. Well worth the price and effort.
This unit is under a bed, all you can hear is air moving, no compressor noise at all.
Thanks for the quick shipment !
Great customer service. Quick delivery. Easy installation.
"Very good all round . On time delivery . "
"Great I should get some banners or sticker for my truck to get more advertisement and more orders. Watson Marine thank you "
"Fits as per dimensions. It's right under my bed so when it first kicks on you hear it but then it's quiet. I have the flow valve so it does shut itself down when it gets clogged in heat mode. I like the fact it can save itself. I am in very dirty water so I have to clean the sea strainer and flush the lines every two weeks. I also wish they gave you a choice on cover plates. The silver one is too flashy."
I have been boating for over 50 years and worked as a marina service manager for over 10 years and I have either worked on or serviced marine AC units of all manufactures and I think that this Marine Air is a step above anything that I have seen before that's why I chose it to replace the Cruise Air unit in my Motor Yacht and I hope it holds up to my expectations keep up the good work Marine Air 🙂
I have to say this unit was ALMOST a breeze (no pun intended) to install. The only issue I ran into was that the shipping configuration resulted in a condensation tray overflow during the initial run-in period once it was installed. Once I discovered this and relocated the drain hose to the front drain fitting, that was no longer a problem. The unit is cooling 2 compartments, our V-berth and galley on a Hatteras 54-footer. Even before the ductwork is connected, the unit is already cooling the compartments beyond expectation. We anticipate once the ductwork is installed, the unit will be a real asset.
This new unit is quieter and uses less amperage over my old Dometic 10K. My Dometic was also not an older unit but developed a leak that could not be repaired after just 2 years.
This is a great unit because it is not that tall and the base is narrow so it met my space requirements for install. Good value and unit works great. Nice and quiet too!
I like phone access to order and also if you have any questions . Buy the way the AC is working great Thank you
"I purchased one unit for my salon and one unit for my bedroom on my 1986 42ft Mikelson and both still working (looking) like new without any issues more than 1 year after installation. Made of durable materials and relatively easy to install (myself). I travel regularly for work and my boat is always nice and cool in this TX heat when I return back home! Used year round and warm in the winters also. I'm a do it yourselfer, the supplied lifting eye and mechanical gauges build in are very useful to install and monitor the AC operating conditions. Controls are easy to use and the wireless remotes are nice also. Both AC units were packed very well for safe shipping and operate very efficiently! More compact, less start up current, and uses less wattage than the older units I removed. Very quiet and reliable. I'm very hard to please!
Thank you to everyone at Marine Aire for your hard work and quality units at a very fair price!
"
I ordered a small 240V AC for my front cabin, they called to make sure I wanted a 240V, then shipped same day. I replaced a Dometic, the new one is MUCH quieter.
"Excellent communication and service"
Replaced an old Dometic, it's quiet and does and excellent job. I had a small part crack during unpacking and these overnighted a replacement.
"Just installed a 16K 120 volt unit in a Catalina 320. All went as planned and support is outstanding if you have questions. "
Ordered and it arrived following day in Ft Myers,FL with great follow up between shipper and recipient down to a 2 hour window. Unit is being used for 2 smaller forward cabins, entire unit in space that had housed blower unit from old split system. On second week from Florida to Chesapeake Bay and love being able to use remote in second cabin and working great, nice and quiet. Haven't used heat yet and controls not very intuitive so holding back on the excellent for only those reasons.
Thanks for great service.
Eddie and Gail
"Easy to install , great price & quick delivery "
Great customer service
"Everything you need for a quality job. All bronze the fittings and sea strainer by Groco, no junk!"
WOW! Ordered and shipped the same day! Received the next day! Awesome, we're all cool now! Seriously fast shipping & great communication, you called to make SURE we knew what we were buying! Would absolutely do business with you again!
"Compact, quiet and the blower rotates 360 degress. High low pressure gauge built in. Great design! Would buy again."
