Heat source when away for the day

Paw Paw John wrote:
I'm like Cummins12v98, I use the Cheap Heat System all winter while plugged in at he house. I keep it set at 50 degrees and it keeps everything happy. My basement is also heated by the cheap Heat System, so no worries about draining tanks, pipes. You will hear all about that it's not a cheap system but think of it as an investment in your camper and your safety. Good luck and a very safe New Year !!!,

I took a look at the Cheap Heat system and it looks like it pretty much boils down to an electric resistance heating coil mounted in the propane furnace system's ducting such that the ducts are conveninently used to distribute electrically heated air with the propane burner kept off - which of course permits campground electric to be used for distributed heat comfort while at the same time keeping any RV tanks heated via the ducts just as if the propane furnace was being used.

It looks like only one of their three models can be used with 30 amp RVs - the 1800 watt model. This won't keep an RV very comfortable in really chilly weather, as the BTU level from 1800 watts is not anywhere near as much heat as the typical propane furnace delivers.

I believe someone in these forums some time ago suggested something like aiming or mounting an electric heater into the propane furnace's intake opening to supplement the propane furnace so as to keep the burner running less - thus saving some propane while at the same time getting high BTU levels into the RV. I guess the propane furnace would be on less, but the air coming out of it's outlets during it's on time would be hotter - due to the electric heater's boost while the burner was on. I don't know how one would automate turning off the electric heater between between propane furnace cycles.