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Old 09-10-2018, 06:49 PM   #3
_Ogre
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Join Date: Jan 2012
Location: Motown
Posts: 7,677
Re: Propane Garage Heater Recommendations

a lot depends on how tight and insulated the walls and roof are

when i first started out in michigan, i had a turbo heater that i ran on 5 gal bbq tanks
ventless heaters suck, they make a lot of water vapor that condenses on everything including table saws and tool boxes

now i have a $300 craigslist 80k btu house furnace in my 20x30 shop, i can open a door and heat the 12x30 vehicle bay too
shop is insulated and heated all winter at 45*, 60 when i'm out there, vehicle bay is not insulated nor air tight
propane furnace is 90% efficient is vented with pvc pipe, only duct work is a 90* elbow sitting on top of the furnace
i have a 100 gal propane tank locate on the other side of the wall, typically i go thru 150 gal of propane
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