Electric or Propane - Router Forums
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post #1 of 33 (permalink) Old 08-22-2016, 10:21 AM Thread Starter
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Default Electric or Propane

Have been using the garage to apply finishes this year - been working pretty good. With the cold weather looming (Michigan) I've been wondering about heating it the couple days a week I need. Should I go with electric or propane. And it does have insulation under the drywall and on the overhead door.

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post #2 of 33 (permalink) Old 08-22-2016, 10:31 AM
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Originally Posted by honesttjohn View Post
Have been using the garage to apply finishes this year - been working pretty good. With the cold weather looming (Michigan) I've been wondering about heating it the couple days a week I need. Should I go with electric or propane. And it does have insulation under the drywall and on the overhead door.

HJ
I would go with electricity as propane puts out a lot of moisture unless it's vented out side. Here in Tennessee propane is way more expensive.
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post #3 of 33 (permalink) Old 08-22-2016, 10:56 AM
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If the propane is unvented and draws its fresh air from in the shop would there be a fire hazard from the finishing fumes?
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post #4 of 33 (permalink) Old 08-22-2016, 11:00 AM
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Can you build a booth to finish instead heating the whole garage? I dislike propane in general (too many years with job site heaters) and the fumes are bothersome.

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post #5 of 33 (permalink) Old 08-22-2016, 11:43 AM
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Finishing fumes and flames don't mix. Electric heaters, preferably without an exposed heating element to ignite stray fumes. Just finished insulating my roll down garage door, but the garage ceiling needs heavy insulation and dry wall. Will hire someone to do that, too darn heavy for me anymore. I'm thinking I need a fan to vent air out of the attic space that will result. Without that insulated ceiling, a heater will never be able to keep up.

May also have a fresh 3-4 inches of blown in insulation put in the attic of the house itself. Had new ductwork installed last year and I think the existing blown in got trampled. Winter can get frosty here, but insulation is even more important during a Mojave Desert summer.
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post #6 of 33 (permalink) Old 08-22-2016, 12:12 PM
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Tom; re the attic venting...don't forget the make-up air required, no matter how it's vented, an often overlooked factor in venting.
If you have gable end walls, then installing vents in those walls may be the simplest way to increase the airflow through the attic space.
Roof top turbines work like a 'hot' damn for pulling the air out.
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post #7 of 33 (permalink) Old 08-22-2016, 12:32 PM
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My shop is heated with a Modine Hot Dawg propane heater. Sealed unit which draws outside air for combustion, exhausts fumes outside.

The 24x36’ shop is well insulated and when unoccupied, thermostat is at 45-48 degrees, occupied 68 degrees. It takes only a few minutes to warm up. No moisture or rust on tools.

Unit is going on 16 years old, with no problems. Each year before start up, I blow the unit off with compressed air and do a test run. That is the only maintenance I do.

Tank is 125 gallons and usually filled in August when demand and price are low. Propane company sends me a reminder each year about their fill-up sale.

Here in Washington, propane is way cheaper than electric. Propane is far more efficient. From what I read and have been told by installers, electric is not that efficient for heat and depending upon your utility rates, costly. Our house has electric heat, supplemented by a heat pump which keeps the cost down.

Prior to installing the Modine unit, I ran a 220 volt Grainger “milk house” heater. Not very efficient and shop was always cold as it just did not generate enough heat and have a powerful enough fan to move the air.

Do some informational shopping at the local utility company and heating shops about both, then decide.

Some links that maybe helpful:
Modine HD Hot Dawg Gas Garage Heater Information

Hot Dawg® Power Vented (HD) | HVAC

Last edited by Ray Newman; 08-22-2016 at 12:35 PM.
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post #8 of 33 (permalink) Old 08-22-2016, 08:45 PM
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Quote:
Originally Posted by hawkeye10 View Post
I would go with electricity as propane puts out a lot of moisture unless it's vented out side. Here in Tennessee propane is way more expensive.
ditto...

This would have been the week that I'd have finished chewing thru the restraints...
If only new layers hadn't been added....

Stick....
Forget the primal scream, just ROAR!!!
"SNORK Mountain Congressional Library and Taxidermy”
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post #9 of 33 (permalink) Old 08-22-2016, 08:47 PM
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Quote:
Originally Posted by kklowell View Post
If the propane is unvented and draws its fresh air from in the shop would there be a fire hazard from the finishing fumes?
yes...

This would have been the week that I'd have finished chewing thru the restraints...
If only new layers hadn't been added....

Stick....
Forget the primal scream, just ROAR!!!
"SNORK Mountain Congressional Library and Taxidermy”
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post #10 of 33 (permalink) Old 08-22-2016, 08:48 PM
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John..
listen to Bill...

This would have been the week that I'd have finished chewing thru the restraints...
If only new layers hadn't been added....

Stick....
Forget the primal scream, just ROAR!!!
"SNORK Mountain Congressional Library and Taxidermy”
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