I have had two shops and have heated both with small direct vent gas
furnaces. There is no open flame so there's no risk of an explosion. The
furnace draws and exhausts air directly to and from the outside and the air
is heated in an enclosed chamber.

They're hassle-free and you have the benefit of a thermostat. I turn it down
to 50 when I'm not using it and up to 65 when I'm in the shop so the shop is
heated to some degree all winter which I like. Only takes about 15 minutes
to bring it up to working temp. My current shop is 22 x 26 and well
insulated and doesn't take much to heat. Cost for the furnace was about $700
and they are easy to install yourself. You just need a gas line to tap into
and an outside wall.

"Dave Rathnow" wrote in message
news:OZ3Xc.55635$X12.38428@edtnps84...

With winter immanent, I'm looking at putting some heating in my shop
so I can work and not freeze. I've heard people say that any
kind of open flame heating is dangerous because it could ignite saw
dust--I've heard others say this is rubbish.

Could people share their opinions and advice? Is an open
flame heater dangerous? What type of heating do you use?
Any recommendations to heat my shop: it's about 20x20
with a 12 foot ceiling.

Thanks,
Dave.