Ok, we bought our first 5th wheel this year and are a little perplexed by an air conditioning issue. Its a 2015 Jayco 339FLQS. Front living room. It came with a single 13.5K air unit. Mounted just sli...
Check the AC unit, remove the inside plastic that holds the filter. The intake side and exhaust are separated with a cheap plastic/cardboard product and usually there is significant leakage between the two! Use "metal backed" tape to seal off the intake from the exhaust, your unit will see a bump in its efficiency of the unit!