by Jim.M » Fri Sep 09, 2011 10:58 am
I used a "mr heater portable buddy" heater (using the green coleman disposable bottles) last week in yellowstone.
since my build is still in "build mode", we were tent camping. nights got down to 29F but with the little catalytic heater going (in the tent) we stayed comfy.
We left the heater on all night on the low setting; had to swap bottles midway through.
the tent was a huge 10'x10' and 7' or 8' high at the peak; the heat rising meant if one stood up it was probably 90 degrees at head level; down at sleeping level my thermometer was showing 55F.
In an insulated TD I'm sure one wouldn't even need to run it all night, just a quick blast before bed and then restart in the morning.
This heater has a low oxygen cut-out; others have had problems with theirs at high altitudes but we've had ours going at Yellowstone (canyon village campground 8000'), South Rim grand canyon (mather campground 7000') and Bryce canyon (north campground 8000').
Never had any low-oxygen events. Supposedly the catalytic heaters don't produce CO... in an enclosed space I'd invest in a CO/Oxygen alarm. I didn't have any worries in the tent with a door flap open and a window flap open up top for some fresh airflow.
You can buy an adapter to run the heater from a bulk tank, I think for $40 or so, the heater is $80-$90.
The control knob is fiddly and after running out of propane the built-in clicker igniter refused to do its job lighting the pilot light, so I pulled out the bbq lighter which got the heater going again.
if one's hands are delicate and sensitive as a brain surgeon's, the lighting process will be smooth and delightful; all others are doomed to frustration and failure (read the online reviews for proof).