allen, Hi, I have the "Cold Machine" [Adler/Barbour] in my 30. It's air cooled, and I've had no problems with it in the 10+ years I've owned Siren Song. It was installed by PO. It is located under the port settee, directly in front of the galley sink. It's vented on the right just above sole. Because it's air-cooled, it probably adds to the cabin temps, but I don't think it's material. I'll freeze a gallon jug of H20, put it in the box, and turn on the frig. This gets everything cold quickly without a lot of melting ice. FWIW, a cruising friend of mine has a water-cooled unit [Grunnert, I think]. While the unit does a really good job, we had lots of problems this past season with blockages mainly due to jellyfish ["the cockroach of the Chesapeake!]. So, I'd go with air cooled unit. As far as ampacity, I have 2 house batteries, and 1 start batt., but it's probably 50% of your capacity. I usually leave it "off" unless I'm plugged in, or motoring. I'm curious what brand of battery you have, and did you have to modify the aft cabin space?? I'd like to increase my amps. Pete Winters s/v Siren Song '91 C&C30 MKII Deltaville, VA
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