Gdetrailer wrote:
5,000 BTU of heat out of one heater is a LONG, LONG stretch for heating an entire RV when considering it is a fraction of the heat a RV furnace can put out
While I generally agree with your point. You have to consider the efficiency of the lp furnace when comparing to a space heater.
Space heaters are 100% efficient. The lp furnace is far from efficient. I believe they are about 70% efficient and maybe as bad as 505 efficient.
If you hold your hand in front of the exterior exhaust discharge you will feel a lot of wasted heat being discharged to the outdoors.
That heat translates to $$$.
Efficiency ratings are a big deal when it comes to residential furnaces. RV furnaces are very inefficient compared to residential models.