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Old 11-04-2014, 01:18 PM   #6
djmarchand's Avatar
City: Litchfield, Ct/Punta Gorda, Fl
Country: USA
Vessel Model: Atlas Pompano 23- outboard
Join Date: Aug 2012
Posts: 4,066

Your points 1 and 2 are very true. But I don't think 3 is. When you count the amperage draw of the raw water pump, marine air conditioning systems aren't so efficient. Typically they require 13-14 amps AC to produce 16,000 btu of cooling which is roughly a SEER of 9-10.

The efficient mini split systems do much better than this using air as the condenser cooling medium. The cheaper ones have a SEER of 12 and the better ones are in the teens. They obviously have large and efficient condensers to allow them to do this.

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