Roof top A/C and heat pump

while it's true you can't use a heat pump much below 40 degrees, we use ours very effectively when it starts getting really cool. love the savings on the propane tank; extending the propane usage. I haven't done any comparison in costs, but if you are paying for an RV space which includes electric, you are getting it included w/o spending the propane; another good thing.

Hi,

A heat pump is nothing more than a refrigerator running "backwards". They draw the same number of amps as the air conditioner does when it is set in cooling mode. Because it is extracting heat from the environment if you compare it to an equivalent size resistance heater, and the outside air temperature is not lower than about 40 F they "produce" somewhere between 2 and 2.5 as many btu's for the identical number of watts.

If and when my air conditioner dies, I will be considering a heat pump as an upgrade.

I've already "broken out" my furnace control from the OEM Dometic thermostat--so I can run the heat strip and the propane furnace at the same time.

They have an internal freon reversing valve. The air flow remains the same.