Well, I was hoping for better. I was afraid that the need to provide enough air exchanges to keep the O2 levels safe, along with the moisture problem, the thing would probably waist more heat than it provided as useful heat.
In the specs (read somewhere) it said it needed 1 square inch of vent opening for every 1000 btu of heater output to provide enough air exchanges (this doesn't sound adequate to me). I usually keep a window and the bath vent/fan open a bit to prevent condensation and provide fresh air anyway. I have a place that I could put it, along with the tools and talent. So, I could but, it sounds like the return on investment would be low. The additional hoped for gain was not having to hear the furnace blower running.
Also, I read on the Camping World site a couple of glowing "customer reviews" which caused me to wonder if there might be something new/innovative about these units. These sort of "reviews", I take lightly as it can't be ascertained who really posted them (maybe someone from the manufacturer?).
I, too, have come to enjoy a more "comfortable camping experience", as years have passed. For the price of the unit, plus the stuff to install it, I could easily just purchase an extra battery or two - with money left over. The reason I want to "save" battery power is for other electronics/radios.
I've resisted buying a genset. However, my truck has a 2nd battery tray (with the towing package). I was thinking of using that tray to put another battery, along with a battery isolator, to keep charged for general camper usage. I can swap them as needed, while the other is being charged during driving for sightseeing, errands, etc. I am weighing this vs. just putting 2 AGM type batteries inside the camper.