Everything = insulating the roof shroud, replacing thermostat with digital, stuffing towels in the end run of the ducts, using foam and duct tape to make sure the return and cold air are separated. Without the freeze up wire pulled out I got 65 coming from the closest duct. After pulling it out it dropped to 51 in 20 minutes. The sun is going down. Tommorow will be the true test. I pulled a 39 ft fifth wheel for 17 years. One 15k unit. You could go south in the summer. Put 2nd unit on top, problem solved. If I have to go to 2nd unit I’ll have to figure out how to go to 50 amp. But I’m not going to wake up sweating my butt off at 8 am . Oh, I’m ordering door stop buttons to stick in above the vents to direct air down and out the vent.
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