NF. Power packs?

[Fisherman]

One other thing you have to weigh, non vented heaters put a lot f moisture in the air as part of combustion that will condense on the ceiling walls, windows and drip, drip, drip.  Ya, I know, crack a window, why the hell am I heating northern Ontario.

[tender52]

Thanks all for the help and advice

[DanD]

My brother and a few of his buddies built a 30X30 hunt camp and they used a 2 burner propane cook top for heat. What they did was too put the cook top inside an old down draft wood stove; the stove was more or less a heat exchanger. They put the stove close to the front of the shack and ran the chimney piping off the ceiling to the back wall. By the time the pipe went through the wall flange; it had dissipated most of that heat into the room. They also had a couple of those heat powered stove fans, sitting on top of the wood stove, to circulate the air. No CO to worry about at night; it's going out the chimney. It did take a while to warm up; but once the fire brick and the steel got hot; it would keeps things nice and warm.

Dan.