Well I returned that Mr Heater to the store because I was not happy with it. I had to wait until this month to return it because it is a seasonal item and they didn't carry them over the summer. I ended buying one of those wall mounted ventless heaters off Craigs list for $40... a lot better than the $160 they cost new.
I rigged up a real cool mounting bracket that can be easily removed when I don't need the heater.
It's pritty simple, the wood is cut to fit in front of the window, and rests on the bottom of the window sill. It's held in place with a piece of scrap metal stair trim, screwed to 2 of the window screws.
when in place the heater hangs from the bracket it came with - which is screwed into the wood.
the whole thing can be removed in seconds. I like that it's easily removable since most of the time I don't need heat in the bus anyway. Plus I can move the whole setup into the garage in the winter or wherever I may need heat.
My next problem was finding the proper hose to hook to my 20lb propane tank from my grill. I finally found the right fittings and hoses yesterday and hooked it all up. I was a little worried because the hose has a much smaller inside diameter than the fittings do.
I tested it out and it seems to work fine though... I only ran the heater for about 30 sec, since it was about 80 in the bus anyway, but it really kicks out some heat. I think I'll use a fan on the counter top next to it to blow the air around more, the ceiling was real warm right above it.
Next issue I need to figure out is where to store the propane tank when I'm using the heater. I was thinking about putting it under the counter but then I remembered that the fridge is in there. Is it dangerous to have the tank sitting in there next to the fridge? I mean the tank/hose shouldn't leak any propane when connected properly.
Should I put forth the effort to fab. a propane tank holder under the bus accessible from outside? I think I probably should but it sounds like such a pain in the ass.
Also I have a CO detector in my house that's removable that I plan to use when using the heater overnight. The heater also has a low O2 shut off, and I plan on cracking a few windows for ventilation.