Marine Air Conditioning Through-Hull and Seacock Planning
The short answer
Have a marine installer assess the intake position, seacock accessibility, materials, hose support and required seawater flow. Below-waterline fittings need a suitable design and installation method for the hull. Do not assume an existing intake can be shared or drill the hull from a generic checklist.
Boat AC Through-Hull and Seacock Planning — Requirements and Limitations
Intake configuration and strainer orientation must follow the equipment instructions and the boat’s operating conditions. The owner should know the seacock location and how to isolate the circuit, while the installer confirms access and protection of the fittings.
This is below-waterline work on a fitting that can sink a boat. It is within an experienced owner's reach on the hard, and it is not a job to learn on afloat.
Related Sizing, Installation and Service Guides
Each of these answers a different part of the same problem.
- servicing it afterwardsthe job it creates for the rest of its life
- when it leaksthe one fault on this site that can sink a boat
- what a dedicated through-hull costs$250–550 in parts, two to three hours
- where it sits on the loopthe cutaway, with the seacock marked