Montana Owners Club - Keystone Montana 5th Wheel Forum - View Single Post

prndl · 11-18-2019, 01:54 PM

I installed the bedroom A/C myself. Get a low profile unit for clearance. Get a unit with the controls located in the inside housing. Running a wire to a new thermostat is for me a waste of effort. We use our front A/C when it is really hot and we need to cool the whole trailer down. The front one runs full blast until we don't need it anymore. No need for a thermostat for that. I installed a MACH 8 in my old 5th wheel two years ago and it sounded like there was a Cessna on the roof from the exchanger fan. That is a common problem for the MACH.
13.5BTU would be sufficient. I did not connect the front unit to the ducting. I blocked off the entire plenum area between the ceiling and roof during the install.

11-18-2019, 01:54 PM	#2
prndl Montana Master Join Date: Apr 2017 Location: 1000 oaks Posts: 950 M.O.C. #19630	I installed the bedroom A/C myself. Get a low profile unit for clearance. Get a unit with the controls located in the inside housing. Running a wire to a new thermostat is for me a waste of effort. We use our front A/C when it is really hot and we need to cool the whole trailer down. The front one runs full blast until we don't need it anymore. No need for a thermostat for that. I installed a MACH 8 in my old 5th wheel two years ago and it sounded like there was a Cessna on the roof from the exchanger fan. That is a common problem for the MACH. 13.5BTU would be sufficient. I did not connect the front unit to the ducting. I blocked off the entire plenum area between the ceiling and roof during the install. __________________ 2011 2955RL Gen-Y Executive Kingpin 2022 GMC 2500HD Duramax/Alison 4X4 Crew Cab/Standard bed.