i installed wired inside-outside temp indicators in my water compartments.
if i had to do it over, i would use a wireless indicator system.
i found that i need to use a trouble light for heat in my aft water service compartment when the outside temp is below freezing, and i am using electric heaters inside my moho. the fwd and middle compartments are ok as long as i leave the water heater on electric or propane.
i don't know if my propane furnace would supply heat to the aft water service compartment.
i found that i was getting genny exhaust fumes in the bedroom from the electric compartment.
it was leaking cold are into the bedroom too. i used spray foaming sealant to seal the sides and rear of this compartment.