Marine Air Conditioning Seacock and Through-Hull Service
The one part of the system that can sink the boat. Exercised annually, serviced when it stops moving freely.
Marine Air Conditioning Seacock and Through-Hull Service: Schedule and Equipment
The air conditioning seacock is below the waterline, is often in an awkward locker, and gets forgotten precisely because the system works. A seized seacock is a seacock you cannot shut when a hose fails.
Marine Air Conditioning Seacock and Through-Hull Service: Procedure
If you skip it: A seized valve, and no way to isolate a burst hose below the waterline.
Record the date, what you found and any parts used in the boat's maintenance log. A repeat change—less water flow, faster fouling, a new smell or a breaker that trips again—is often more useful to a technician than a one-off reading. Check the current manual and official sources before changing the procedure, and stop at the licensed-work boundary described in the disclaimer.