We recently purchased a 2017 Thor Challenger 37TB. The main cabin AC will freeze you out but the back bedroom never gets colder than 75•. It is brand new and I'm a little unsure since we are relatively newbies. The vents are opened and cleaned. Any help would be appreciated. Thanks in advance.
The standard line you will probably get from service is air from AC will be 10-15 degrees below outside ambient temp. Okay - something isn't right. On our 2015 37TB ours is generally set to 67 degrees for sleeping at night - and always get there. Now I also gotta tell you, the thermostats are lacking (being nice). But cold air - lots of it.
I'd take it back in for service while your under warranty.
US Army Retired - Loving The Road Trip