Marine AC Maintenance: 5 Tips for Boat Owners

Marine AC maintenance is the best way to keep your boat cool and avoid breakdowns at sea. Nothing can spoil a day on the water faster than a failed air conditioner. Regular care helps you spot problems early and keeps your marine AC running efficiently.

For the best marine AC maintenance, have a professional inspect and service your system at least once a year.

Use these marine AC maintenance tips to keep your unit in excellent shape.

Marine AC Maintenance Step 1: Check the Cooling Water Strainer

• Check for your marine AC unit is to ensure the water intake strainer is in excellent form.
• Check for marine growth, large particles, sea scum, and debris.
• Inspect the thru-hull, strainer basket, and valves.
• Look for damage, clogs, and anything which can obstruct the smooth flow of cooling water.

Marine AC Maintenance Step 2: Clean the Air Filters

• Dirty and clogged filters make your AC unit inefficient, increasing the system’s workload. 
• Clean your air conditioner’s filters monthly by washing with plain water, vacuuming, or blowing.
• Allow them to dry thoroughly before reassembling as moist filters attract dust.

Marine AC Maintenance Step 3: Check the Ducting

• Inspect the hoses from the thru-hull and seacock to the strainer and pump.
• Check for cracked and leaking hoses, broken, worn, and corroded clamps, and replace old components.
• A leaking hose is not only bad for your AC unit, but it can flood your boat and even sink it if you are running the system while the boat is unoccupied.

Marine AC Maintenance Step 4: Check the Condensate Pan

• Make sure the pan is not corroded, as this can lead to leaking and will need a repair or replacement.
• It’s important that the water drains properly.

Marine AC Maintenance Step 5: Clean the Evaporator Coils

• Dusty evaporator coils are inefficient and will increase the strain on your unit. 
• Check your user manual for the correct way to clean the system or ask a professional to perform detailed maintenance.

There are also some routine maintenance items that should be done by professionals.  For example, using a weak acid solution to flush out the cooling system.  This should be done every few years because scale and marine growth can clog up the coil.

Regular marine AC maintenance pays off, as a well-kept unit can last 15 to 20 years.

Climax Marine Services do the services of marine air conditioning units, and we are happy to help you with your questions, routine maintenance, and any problems that come your way.  Contact Climax Marine Services for more information!