How big is your trailer ? How many slides ? What kind and how many BTUs is your unit ? Reason I ask is I just took deliver of a FR Hyper Lite XLR 29HFS 33 foot toy hauler with one medium slide.Ours has a 15,000 BTU Duo Therm Brisk II AC unit with ducted air. The trailer definitely has an air flow problem out of the roof plenum discharge registers. The performance of the AC versus trailer heat load is terrible. Not much fun setting in a trailer that’s 82-85 degrees with little free air flow. I live in Texas so I know how you feel. By the way our unit is very noise, and I am partially deaf.
2014 Silverado Z-71 4X4
2015 Hyper Lite XLR 29HFS