Join Date: Oct 2009
Location: Swarthmore, PA
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Many of these units have a single exhaust hose to spill out the hot air, but no intake hose. Not such a big deal in a large room with open doors in a house, but in a confined space like a boat it can be a problem. If your boat is well sealed you may get poor air intake/exhaust and inefficient cooling. If your boat is more leaky, you'll pull hot air in through all the leaks. Either of these scenarios leads to poor performance. A more proper design would have an air intake that goes through the cooling coils into the boat.
Check to see which design this air conditioner has.
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1998 Catalina 250WK Take Five (at Anchorage Marina, Essington, on the Delaware River)
1994 Mason 44 Firefly on loan from my BFF (West River, Galesville, MD)
1991 15' Trophy (Lake Wallenpaupack)
1985 14' Phantom (Lake Wallenpaupack)