13,500 BTU vs 15,000 BTU second AC
Long story short, I bought a new 5th wheel and paid to have a second AC installed. The ducts run from the bunk house to the front bedroom and I specified a 15,000 BTU connected to the existing duct wo...
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If it were me, I'd have had a 13.5 mounted in the bedroom un-ducted and not tied into the thermostat. That way you can use it for sleeping or leave the door open and help cool the whole trailer. I set my 15K on 74 and it cycles off and on as needed even parked in the sun at the lake in July and August. 15K is plenty unless you want to rent the place out to a butcher as a walk-in cooler.
