Hi Courtney,
I had a boat that was for sale and I didn't want to install a
furnace. I had a single burner Origo and made up a
chimney using a large can and 3/4 " copper pipe which vented out the
main hatch or porthole. I used a small fan
to circulate the warm air. I was absolutely amazed at the amount of
heat (West Coast of Canada) that this produced.
and although I went through plenty of methyl hydrate, I did try a
heat pal (Origo) once and even that worked well but I much preferred to
vent the exhaust due to health concerns/safety. hope this helps
cheers john

Courtney Thomas wrote:

Have come into an old single burner and am considering it as a backup
source.

Opinions, caveats, advice ?

Thank you,
Courtney