Hi All!
Like others on this forum, we too had issues of sufficient cooling in 85+ degree weather. To fix this, I just installed a second a/c unit in the front bedroom of our 3712TS Toy Hauler.
The question is, are we going to have an issue with the factory thermostat location? The thermostat was factory installed on the wall above the steps going into the front bedroom.
The new a/c unit (a Coleman 13.5k unit) has it's own thermostat on the inside grill. One vent faces forward, the other rearward (toward the original thermostat).
I do not see how the wall mounted thermostat will not shut off the main a/c when the rear vent is blowing cool air across it.
Has anyone else here added a 2nd a/c unit with the main thermostat in a similar location? Did you relocate the thermostat?