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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I'd say Talk to Dometic is good advice.
Started to say it's possible that somebody doesn't think the ducting can handle the increased air flow that the 15K represents over the 13.5 but when I looked it up in Coleman it said their 15K uses the "biggest blower motor in the industry at 1/3-HP" but the rated air flow was 325-cfm and the 13.5 was rated 320-cfm with motor size not specified.
But it IS clear that if an A/C can't flow air, it will freeze over.
Excess capacity isn't good either. To me, two 15K on a fiver that big wouldn't be excess, but the 15K in our 31' Class C is overkill in our 95* high humidity FL conditions. Its cooling cycles are so short that it doesn't have time to condense enough humidity out of the coach. We just added a little dehumidifier to help with that, and it seems to have made a big difference.
I take it this is a 50-amp setup and you plan to use 50A sites all or nearly all the time? I mention this because our 15K causes problems with our 30A service.
Started to say it's possible that somebody doesn't think the ducting can handle the increased air flow that the 15K represents over the 13.5 but when I looked it up in Coleman it said their 15K uses the "biggest blower motor in the industry at 1/3-HP" but the rated air flow was 325-cfm and the 13.5 was rated 320-cfm with motor size not specified.
But it IS clear that if an A/C can't flow air, it will freeze over.
Excess capacity isn't good either. To me, two 15K on a fiver that big wouldn't be excess, but the 15K in our 31' Class C is overkill in our 95* high humidity FL conditions. Its cooling cycles are so short that it doesn't have time to condense enough humidity out of the coach. We just added a little dehumidifier to help with that, and it seems to have made a big difference.
I take it this is a 50-amp setup and you plan to use 50A sites all or nearly all the time? I mention this because our 15K causes problems with our 30A service.
