Travel Trailer AC Weak ~ Heartland Wilderness ~ Any others?

The camper is big. No single air conditioner is going to cool it down in an hour on a hot day. It's going to take several hours and likely through the night. Partly because everything inside the trailer is hot and it has to cool all the furnishings and walls down also. Partly because the rig is big. I strongly recommend two AC's for a rig this big. I had a 32 foot Puma TT and had the same issue. I now have a 34 foot Jayco 5ver with two AC's and no issues.