wrote in message

I also understand that adding a vent free type propane or gas heater
will add to my moisture problem.

One of the components of propane is water and burning it, of course, makes
water vapor.


I was referred to use baseboard
heaters but Im concerned on how much it would cost being electric. I
. But Im still
concerned and still wonder how much heat they would throw off and what
the temperature would be using 1,2 or possibly 3 baseboard electric
heaters.


A 1500 watt electric heater will give you 5,000 Btu of heat. You probably
need 20,000 to 30,000 Btu to get the temperature comfy on a cold day. Given
the part time use, they will probably be operating much of the 20 hours that
you want heat so you can figure the cost by multiplying the kW by your
electric rate.

I'm not sure of the codes on gas heaters. I do know that in some places, gas
hot water heaters are put into garages but must be 18" off the floor. I'm
also wondering what mechanics have in their shops. Of course, any open
flame in any place that has gasoline and solvents can be a danger.