Temps here in Huntsville AL are going down to 24f in the next 2 days. The plan is to put a small heater heater in the main bay (36' coach) hoping to heat the secondary water tank bay. We probably will try to heat the inside of the coach with the 2 electric heaters...so no propane heat. Have 2 110v heater cords that are 6 and 10ft...will tape one to the port side...