heating issues
Thread Starter
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Senior User
Joined: Feb 2004
Posts: 347
Likes: 1
From: Buffalo, New York
heating issues
OK, I just read the thread about garage heaters. Do they sell bigg electrical heaters? I want to paint, weld in my garage. How the hell do I vent a gas heater? Where do I get a large propane tank? What kind of heaters do paint shops use? I never noticed how the heater in my fathers paint booth at work was vented. They used one of those overhead tube heaters. The same as I used when I used to paint car haulers/cars. I am getting aggrivated trying to figure out how to heat my small garage. It is about 20x16. I just insulated the walls and I am going to insulate the ceiling this weekend. What should I do. Thanks for any help!
Postmaster
Joined: Apr 2001
Posts: 3,818
Likes: 3
I have used a 230v wall mounted unit with thermostat and blower for the past 15 years with no problems in a 30 x 30 garage with insulated walls and ceiling. If I paint, I just raise the temp to the desired level and then pull the plug while I paint. Usually just panel repairs. It gets pretty cold here, minus 20 they other day but that little heater works well.
Posting Guru
Joined: Mar 2004
Posts: 1,321
Likes: 2
From: MI
As far as venting a furnace it depends on what type, most you would vent thru the roof using B vent pipe (double walled). Check local codes for specifics on what is needed. Some unit heater will alow side wall venting with the same B vent. High efficiency(90%) furnaces can be vented thru the roof or side wall using schedule 40 PVC pipe. make note the 90% furnaces produce condensate and should be kept from freezing.
Electric heat can get real expensive to run. If you go with propane, the local refill place here will not allow you to transport a full 100 lbs. tank on it side or in an enclosed vehicle (DOT regulation). Buy two 50 lbs tanks and daisy chain them together.
Over size the heater if you plan on only running the heat when the garage is in use, and run a smaller(properly sized) heater if you plan on running it at all times. With all the walls, doors and ceiling insulated, a properly sized heater will be about 40,000 to 50,000 btus.
Electric heat can get real expensive to run. If you go with propane, the local refill place here will not allow you to transport a full 100 lbs. tank on it side or in an enclosed vehicle (DOT regulation). Buy two 50 lbs tanks and daisy chain them together.
Over size the heater if you plan on only running the heat when the garage is in use, and run a smaller(properly sized) heater if you plan on running it at all times. With all the walls, doors and ceiling insulated, a properly sized heater will be about 40,000 to 50,000 btus.
