12V Marine AC System

Name: 12V Marine AC System
Brand: SeaWater Pro
Price: 4995.00 USD
Availability: InStock

$4,995.00 $5,995.00

Shipping calculated at checkout.

SeaWater Pro's Smart 12V Air Conditioning System is a forward-thinking solution designed to enhance comfort onboard your vessel. Engineered with precision and innovation, this system comes packed with modern features delivering an elevated technology experience onboard your vessel.

Key Features:

Variable Speed 12V DC Compressor: The system incorporates a variable speed compressor for precise temperature control, enhancing energy efficiency and enabling effective cooling for cabins and small salons without unnecessary power consumption. Our one system can operate in your choice of 5,000, 9,000, and 12,000 BTU mode. This setting can be configured through your Bluetooth thermostat control.

Energy-Efficient and Quiet Operation: Leveraging the variable speed compressor, the system operates with notable energy efficiency. It eliminates the need for a soft start device and maintains quiet performance at all speeds. Our system runs directly off of your house battery bank, eliminating the need to run a generator. On average, in a primary cabin, the climate system uses 250 amp hours over night (9 hours) in 5,000 BTU mode.

Advanced Bluetooth and WiFi-Enabled Touch Screen Thermostat: The system features a modern thermostat with Bluetooth and WiFi connectivity. The touch screen interface is suitable for wall attachment or tabletop placement.

Advanced Operating Modes: The climate system offers various operating modes, including Cool, Heat, Humidity Control, Budget, and Fan. Our patented Budget Mode, an innovative feature, allows users to limit total power consumption, automatically shutting down the system when the desired limit is reached. This ensures batteries are not accidentally drained below safe levels.

Future-Ready iPhone/Android App: Anticipate enhanced control with the iPhone and Android app, scheduled for release in 2025. The app facilitates seamless climate system control via Bluetooth and enables remote management of WiFi-connected devices, ensuring continuous comfort accessibility.

SeaWater Pro's Smart 12V Air Conditioning System provides forward-thinking, innovative technology that brings modern climate controls to your vessel. Our system raises the bar for onboard climate control, offering efficiency and unparalleled user control for a contemporary maritime experience.

This product bundle includes:

SeaWater Pro's Smart 12V Air Conditioning System
SeaWater ProTouch Display
SeaWater ProSystem Controller
SeaWater Pro Climate Temperature Sensor

This product bundle does not include

HVAC Ducting, breaker, DC wires, 3/4" hoses, miscellaneous mounting hardware.

Specification	5000 BTU	9000 BTU	12000 BTU
Heat	35a / 420w	41a / 492w	63a / 756w
Cool	30a / 360w	36a / 432w	65a / 780w
Humidity	30a / 360w	36a / 432w	65a / 780w
Dimensions	12 x 17 x 12	12 x 17 x 12	12 x 17 x 12
Weight	50 lbs	50 lbs	50 lbs
Refrigerant	R134a / R1234yf	R134a / R1234yf	R134a / R1234yf
Power Source	12v	12v	12v
Sea Water Hose	3/4"	3/4"	3/4"
Air Duct	4"	4"	4"

Finance Your Marine AC

Up to 24 Months of Financing

Choose Shop Pay at Checkout

4 Payments Over 6 Weeks

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SEAWATER PRO

Marine-grade

Fast delivery

Don't plan your trip around water.

Frequently Asked Questions

Our SWP Marine AC System has settings to cool and climate control spaces at 5,000 BTU up to 12,000 BTU. Using your remote control, anyone can easily adjust their setting to manage the temp, humidity and fan speed, to provide the most comfort regardless of external factors.

You can contact the department solely responsible for the AC system and its recipients at climate@seawaterpro.com.

SeaWater Pro marine A/C units are uniquely engineered for energy efficiency, modular compatibility, and off-grid performance. Our systems use 12V DC programmable variable-speed compressors with a touchscreen Pro Display for effortless control. Designed in Fort Lauderdale, FL, they are ideal for liveaboards, cruisers, and off-grid sailors who want reliability, performance, and low power draw.

Yes, you can. SeaWater Pro offers a 12V DC-powered marine A/C system specifically designed to operate efficiently on battery banks or solar systems. This makes it a perfect solution for boats without a generator or for those who want to reduce reliance on shore power. No soft start required and variable speed operation helps conserve energy.

The appropriate size depends on your cabin’s square footage, insulation, and ventilation. As a general guide:

5,000 BTU for cabins up to ~100 sq ft
9,000–12,000 BTU for 100–250 sq ft
12,000+ BTU for large salons or combined spaces

The Seawater Pro 12 volt DC Marine Air conditioner is capable of operating at 5,000, 9,000, and 12,000 BTU modes. You can select the appropriate setting for the space in which it will be installed. This setting is chosen through the Pro Display control.

The water maker and air conditioner systems are independent of one another. They are both designed for efficiency in easy use, making them complementary to each other.

Our systems use a reverse-cycle refrigeration process. The unit absorbs heat from your cabin and transfers it into seawater via a heat exchanger. In heating mode, the process is reversed to warm the air. The result is quiet, efficient climate control for year-round comfort.

Yes. SeaWater Pro’s systems are DIY-friendly and come with detailed installation instructions. Most installations require basic plumbing and electrical knowledge. If you're not comfortable with marine systems, professional installation is always a good option.

Our units are engineered for quiet operation using soft-start brushless DC compressors and variable speed technology. They are significantly quieter than older compressor-based units, making them ideal for sleeping cabins or enclosed pilothouses. The system components are housed in a a powder-coated aluminum cladding, creating a sound barrier.

Yes. As long as the unit is powered and the seawater intake is unobstructed, the A/C can run while underway. This is especially useful for cooling cabins before anchoring or while traveling in hot climates.

Power usage varies depending on the model and speed setting. A 12V 12,000 BTU unit may draw around 50–70 amps at peak, but soft-start and speed control features allow for significant energy savings. Our system is optimized for solar and lithium battery applications. For a sleeping cabin, we’ve measured average 250 amp hour use over night in 5,000 BTU mode.

Yes, all SeaWater Pro marine air conditioners are reverse-cycle, which means they provide both cooling and heating. You can switch between modes using the Pro Display control, making it suitable for all climates.

We recommend:

Cleaning the seawater strainer regularly
Rinsing or replacing air filters every few months
Inspecting ductwork and condensate drain lines
Winterizing the system with propylene glycol during the off-season

Routine checks help extend the life of your system and ensure peak performance.

With proper care and regular maintenance, our marine A/C units typically last 8–15 years. Saltwater exposure and usage patterns can affect lifespan, but our systems are built with high-quality, corrosion-resistant components for longevity.

Yes. Our compact, modular units are ideal for retrofits. Flexible ducting and simplified power requirements make it easy to install in older vessels without major modifications.

Each SeaWater Pro marine A/C unit includes:

The main 12V DC air conditioning unit
Programmable Pro Display control
Single stage 12 volt seawater pump
Basic installation manual
Temperature sensor

Component mounting board

Computer control
Compressor control
80 amp Blue Sea Systems breaker
4 Circuit 65 amp Blue Sea Systems Terminal Block

All SeaWater Pro products, including our marine A/C systems, are designed , assembled, and supported in Fort Lauderdale, Florida, USA. We provide U.S. based customer support and a full inventory of replacement parts.