AC vents
I have a 1999, 23ft 5er that was having issues keeping up in the heat a couple weeks back..
Granted it was 100 out in the sun. That said I did a little youtubing ... I found my cold air runners weren't sealed at the AC unit, or at the vents themselves, nor sealed past the vents, just pumping cold air into the "atic"..
I also found the cooling fins filled with "cat hair" or at least, a cat hair brush worked good for cleaning them. Added bonus, it already had a hard start cap installed.
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