Originally Posted by wahoonc
Typically a "heated underbelly" is accomplished by them stuffing a heat duct down to where it will pump warm air into the belly area, then there should be a hole cut under a cabinet somewhere to act as an air return. So you have to have the LP furnace running to have a heated belly area. If you have tank heaters there should be switches for them. Typically they will be in the same area as your water heater and water pump switch. I am not familiar with your specific unit, hopefully someone that is will chime in shortly.
Hi. I own a 2017 291RESL and yes the furnace must be on to heat the underbelly
Any questions let me know, I've studied this model very well
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