CruiseRO, Proud & Trusted Frigomar USA Partner for the Western USA & Mexico

Boat AC units work with a series of components that together provide cool and comfortable air on board:

1. The compressor serves as the engine, pressurizing the refrigerant gas to raise its temperature significantly. 
2. The condenser then releases heat, turning the gas into a high-pressure liquid. 
3. The expansion valve controls the flow of the liquid, reducing its pressure and temperature. 
4. In the evaporator, the refrigerant absorbs heat from the surrounding air, creating cold air for the cabin. 
5. A blower fan ensures proper air circulation, while a return air grille and filter clean and enhance air quality.

Follow these steps to winterize your boat AC unit:

1. Remove any debris, dust, or dirt from the unit.
2. Disconnect the AC unit from any power sources.
3. Drain any water from the air conditioner and its water lines.
4. Check the refrigerant levels. If they are low, recharge the unit to the manufacturer’s recommended levels.
5. Contact a qualified marine mechanic in order to recharge the AC unit.
6. Inspect the AC unit’s wiring and insulation for signs of wear, damage, or rodent infestation
7. Finally, cover the air conditioner with a sturdy, weatherproof covering.

Here are some tips for troubleshooting your boat’s AC system:

• Clean the vents and filters. 
• Check the AC pump for any leaks or odd noises. 
• Check the blower for any damage or blockages and the ducts for leaks or disconnections. 
• Look for any fault or warning messages on the display panel. 
• Check the AC system is powered and that all connections are safe.
• Check for a clogged drain and remove any blockages.
• Check refrigerant levels and contact a professional if you suspect a leak.
• Look for ice accumulation or debris in the evaporator coil, and clean it if necessary.

1. To install your marine refrigeration system, you need to gather the tools and materials. These include the marine AC system, wiring, a circuit breaker, mounting brackets, and insulation materials.
2. Select a suitable location for the AC unit. Prioritize ventilation and easy maintenance access.
3. Securely attach the AC unit to the chosen location using the mounting brackets.
4. Carefully install the ducting to ensure optimal airflow throughout the boat’s interior. 
5. Follow the manufacturer’s guidelines to connect the AC unit to the boat’s electrical system.

The cost of an AC unit can vary widely. Brand-new, basic units for smaller boats can be as low as $1,200, while larger, more advanced units with enhanced features may cost $2,000 or more. Installation costs, typically ranging from $3,000 to $4,000, should also be considered for a complete estimate. Professional installation is vital for ensuring long-term efficiency.

To determine the appropriate size of your boat AC unit, follow these steps:

1. Determine the total cubic footage of the area you intend to cool. 
2. Evaluate the insulation and sun exposure of the area, as well-insulated spaces will require less cooling capacity.
3. Account for heat-producing equipment like ovens or machinery and add their heat load to the cooling requirement.
4. Consider the number of occupants projected for the boat and select an air conditioner with higher capacity for frequently occupied spaces.