I have used one of those "infra-red" propane heaters for more than 5 years
now
and they are great. It is basically a unit that fits on top of a standard
propane
tank, which heats up a metal gauze (4"x4") and than the heat is radiated
out.
My unit is made by Coleman and outputs a max of 28K btu.
It does not heat the garage as such, but does a good job of taking the chill
out of the air and making the garage more comfortable.
Strictly speaking, it in not intended for indoor use, as it uses inside air
for
combustion, but I only leave it on for 10 minutes at a time and never leave
it
on while I am out of the garage.
What I like about this unit is that it is completely portable so I can move
it around
the garage to where ever I am working. Also by placing a standard fan behind
it, it blows hot air where you direct it.
I would not recommend this for a 1 car garage, as you should not have
anything
more than 6 feet in front of it. But my garage is large enough that I have
it well
away from anything.
Obviously when I am working with volatile materials, the heater stay off.
gerry
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