Marine A/C Installation

[sailormark45]

Going to install a/c unit in head near the cockpit. Will be very close to the engine compartment. I was thinking , would I be able to tee into seawater intake for the yanmar 20GM20F, (Freshwater cooled)???? say like inline before the seawater pump for engine coolant cooling?? I really dont want to have my boat look like swiss cheese adding more holes.. lol Holes are a BAD THING in a boat right??hahahaha Thanks in advance
Mark

[captain465]

Never......Never.....ever use the engine cooling intake for anything other than engine cooling!!!!!!!!!!!!!

[fareweather]

Yep, not enough volume there. A new thru-hull would be the way to go, properly done it will last 10+ years and not leak or keep you awake at night.

If you can't get hauled for awhile tee into something that is less critical, maybe your watermaker?

[Gudgeon]

Are you going to be running the AC while running the engine. If not should not be a big deal. How man BTU's is the unit? My AC hose are 5/8 ID 16000 and 2 8000 BTU units. The engine raw water is 1 1/4 in. What size is your raw water thru hull?
Make sure you angle the pan for the condensate to drain. I have my drain rigged to the shower sump I like to keep my bilge dry.