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Old 12-18-2005, 04:57 AM
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Shop Heat

Last year, I bought a couple of electric space heaters for my garage. I got them from Lowes, and the brand is, I believe "Marvin". They are designed to hang from the ceiling, have pull strings to turn them on, and include the mounting brackets, for about $50 each. They can be tilted to different angles. These heaters are rated at 1500 watts, with 3 different levels, the first being basically a heat lamp, similar to the light bulbs in a pole lamp.

The directions for these heaters stated to mount them 18" from anything flamable. Being that the mounting hardware is not that long, I believed that the distance from the top of the heater isn't that important. It must be insulated there(my thoughts). I mounted one of them in the painting area of my garage, the recommended distance from the walls, using the supplied mounting brackets.

Yesterday, while working on insulating the ceiling in my garage, I discovered something. The drywall ceiling in the area of the heater had become discolored from the heater. This is from the heat, burning the paint on the ceiling. If there had been insulation in the attic area above the heater, it may have been a disaster.

I am now considering making a heat shield of some sort, to protect the ceiling from the heat. I will not however, use the heater on the "High" setting for any length of time.

Just thought I would pass this information on, in hopes of possibly avoiding a disaster for someone else on this board.


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Old 12-18-2005, 06:08 AM
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Well heat rises so maybe you need to fab something up to allow you to mount them a few inches lower.
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Old 12-18-2005, 08:11 AM
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I'm using a propane heater in my garage
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Old 12-18-2005, 08:28 AM
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Like Henry says, since heat rises, I would mount them as low as possible. A ceiling fan would help get the air down where you want it too.
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Old 12-18-2005, 02:17 PM
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Get a sheet of metal 22 or 20ga. and screw it to the ceiling. I screwed one end to the ceiling and bent it at a 45 and ran some shrt chains to the other end. Help direct the heat downward too.
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Old 12-19-2005, 02:28 AM
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Since it was mounted according to the directions, using the only mounting brackets supplied, I felt that it was where it should be. Atleast how it was designed to be used. I am now going to make a heat shield out of some aluminum that I have, and attach it to the mounting bracket to reflect some of the heat away from the ceiling. Since I do paint in that room, I want to keep it as clean as possible, with as few areas for dust to collect as I can get away with.

I now get my main heat from one of those radiator type, oil filled heaters that Barryk suggested a while back. I also have a kerosene heater that I use in the other room, so there is other heat available.

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Old 12-19-2005, 08:24 AM
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WHAT, prey tell, are you doing READING the instructions? Those books are only there for packaging....
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Old 12-20-2005, 08:44 AM
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Use a metal sheet where the heat damage is, use 1 inch spacers between the metal (or any non combustible material) and the ceiling so there is a 1 inch air gap between the ceiling (or wall, for that matter)and the shield and clearance to combustibles becomes next to nothing. I would use a piece about 6 inches larger than the heater for the shield. Pyrolysis can become a concern after a period of time. Dan
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