How to Troubleshoot Your Boat s Air-Conditioning System

Marine Air Conditioner Repair

Grande Aire Service specializes in Marine Air Conditioning & Refrigeration. One of the wonderful things about living in Florida is that we have boating weather all year round. Let us keep you comfortable out on the water by maintaining your system, just as you would your home system.

We can install a new system, service an existing or provide you with a maintenance/service contract. Grande Aire also can assist with your on-board refrigeration needs. Do you have an ice machine or wine cooler that needs service?

The basic principle of an air conditioner is the movement of heat. In a marine, direct expansion (DX) seawater-cooled air conditioner, heat is transferred from the cabin air to the refrigerant gas, which then releases the heat into the seawater.

In reverse cycle heating (heat pump), the refrigerant flow is reversed and heat is extracted from the seawater and discharged into the cabin. Part of the cooling process, in addition to lowering the air temperature, is the removal of moisture from the air.This lowers the humidity, making the area feel more comfortable and helping to keep the boat dry, reducing mold growth and other moisture related problems.

There are three basic types of Cruisair systems: selfcontained units, remote (split gas) systems, and Tempered Water Systems. In selecting the type of system for your boat, many factors must be considered, including: size and layout of boat, required capacity, access for routing necessary tubing/wiring/hoses, location of furnishings, and the storage space you are willing to sacrifice. And of course, cost.

Self-contained units are typically the best choice for smaller boats, up to about 40 feet (12m), due to the lower cost of the units and installation. A self-contained air conditioner has all of the major components mounted on a single chassis, which is installed in the living area; usually under a bunk or settee, or in a locker. Cooling only models, as well as reverse-cycle heat pump units, are available.