Garage Space Heaters
12-06-2011, 08:08 AM
#1
Elite Member
Thread Starter
iTrader: (3)
Join Date: Apr 2008
Location: Outside Portland Maine
Posts: 2,023
Total Cats: 19
Garage Space Heaters
As the weather gets colder and I contemplate winter projects on the Miata, I start thinking about a space heater in the garage. It's a rental garage, and I don't know where I'll be after this place, so I don't want to spend a lot. I have also never heated a garage before, so I have no idea what I'm doing.
It's about 1400ft^2, uninsulated. I have been watching Craigslist, and there seem to be a few options. The basics seem to be Kerosene or Propane, and then either the kind that look like horizontal tubes, or the kind that sit more upright (those all seem to be kerosene).
The kind that sit upright are all ~25k btu, and can be bought for $25 all day on Craigslist. The torpedo kind are anywhere from 30k-100k btu, and range in price accordingly from ~$50-~$200, and are a little harder to find.
So, I guess what I am looking for is how many BTUs do I need, and is it feasible to just get 2 or 3 of the 25k btu heaters, since they are easier to find and the price would end up being about the same, or will the three heaters create more fumes than one large heater and cause me problems with ventilation? I'm not looking for t-shirt weather in the garage here, but mid-50s to low-60s would be nice when the temperature outside is in the 20s.
It's about 1400ft^2, uninsulated. I have been watching Craigslist, and there seem to be a few options. The basics seem to be Kerosene or Propane, and then either the kind that look like horizontal tubes, or the kind that sit more upright (those all seem to be kerosene).
The kind that sit upright are all ~25k btu, and can be bought for $25 all day on Craigslist. The torpedo kind are anywhere from 30k-100k btu, and range in price accordingly from ~$50-~$200, and are a little harder to find.
So, I guess what I am looking for is how many BTUs do I need, and is it feasible to just get 2 or 3 of the 25k btu heaters, since they are easier to find and the price would end up being about the same, or will the three heaters create more fumes than one large heater and cause me problems with ventilation? I'm not looking for t-shirt weather in the garage here, but mid-50s to low-60s would be nice when the temperature outside is in the 20s.
Reply
0
0
12-06-2011, 10:30 AM
#4
I posted this in my painting thread a week or so ago. The door needed 2 coats, the first one wasn't drying and as the sun went down the temperature dropped quickly into the mid 30's.
Closed the garage doors and fired up this beast. If I had to guess I'd say our shop is like 2000sqft. This had it around a constant 60° and it wasn't even on full blast.
Easy to use, works quickly and does the ****** jerb.
EDIT: To add to this....
Pretty sure this is the one we have.
http://www.homedepot.com/webapp/wcs/...cStoreNum=6209
75k BTU
I've used everything from the garbage electric heaters to burning wood in an old oil drum and I can say without a doubt, this kerosene dyna glo beats all of them hands down. In every way possible.
The guys at the shop down from ours told me to be careful about the fumes. I could feel a little fucked up while I was doing the 2nd coat so I cracked the door a bit just to be safe.
Closed the garage doors and fired up this beast. If I had to guess I'd say our shop is like 2000sqft. This had it around a constant 60° and it wasn't even on full blast.
Easy to use, works quickly and does the ****** jerb.
EDIT: To add to this....
Pretty sure this is the one we have.
http://www.homedepot.com/webapp/wcs/...cStoreNum=6209
75k BTU
I've used everything from the garbage electric heaters to burning wood in an old oil drum and I can say without a doubt, this kerosene dyna glo beats all of them hands down. In every way possible.
The guys at the shop down from ours told me to be careful about the fumes. I could feel a little fucked up while I was doing the 2nd coat so I cracked the door a bit just to be safe.
Reply
0
0
12-06-2011, 10:42 AM
#6
Elite Member
Thread Starter
iTrader: (3)
Join Date: Apr 2008
Location: Outside Portland Maine
Posts: 2,023
Total Cats: 19
It looks like there are a couple 100k propane units on craigslist about an hour from me for $50 each, I may see if I can pick one of those up this afternoon. Sounds like it might be a little overkill, but that just means one less layer of clothing.
Reply
0
0
12-06-2011, 10:56 AM
#7
Senior Member
iTrader: (4)
Join Date: Jan 2008
Location: Falls Church, VA
Posts: 1,361
Total Cats: 17
Another vote for the forced air torpedo style. Those little radiant tank-top 25K BTU units won't do **** in a 1400 sq ft uninsulated garage.
I went with propane instead of kerosene, since I already have a couple propane tanks for the Weber and I didn't want to have to keep another type of fuel around. I settled on a 50K BTU torpedo, was about $100 at HD, price was competitive with similar units and having to pay shipping from Northern Tool. The torpedo itself is just on/off with no adjustability, but you can dial it back some with the valve on the propane tank if you don't need it full blast. I fire it up about 15 min before I need to work, and that's usually enough to raise the temp from 20F up to 50-60F. I have a standard 2-car garage, about 600 sq ft with a trussed roof, attached but not insulated. If you have 1400 sq ft I'd definitely go for a 100K+ BTU model.
When I get the garage wired up for 230V I'll be getting a big ceiling mounted electric heater to eliminate the odor and the need to keep the garage door cracked, but the propane torpedo does an adequate job in the mean time.
I went with propane instead of kerosene, since I already have a couple propane tanks for the Weber and I didn't want to have to keep another type of fuel around. I settled on a 50K BTU torpedo, was about $100 at HD, price was competitive with similar units and having to pay shipping from Northern Tool. The torpedo itself is just on/off with no adjustability, but you can dial it back some with the valve on the propane tank if you don't need it full blast. I fire it up about 15 min before I need to work, and that's usually enough to raise the temp from 20F up to 50-60F. I have a standard 2-car garage, about 600 sq ft with a trussed roof, attached but not insulated. If you have 1400 sq ft I'd definitely go for a 100K+ BTU model.
When I get the garage wired up for 230V I'll be getting a big ceiling mounted electric heater to eliminate the odor and the need to keep the garage door cracked, but the propane torpedo does an adequate job in the mean time.
Reply
0
0
12-06-2011, 12:11 PM
#13
stay away from kerosine if you EVER plan on doing any painting in your shop its oil based fuel and will wipe out paint work months after using it. i have a 3 row propane heater gets 1600 foot insulated shop to about 70 when i paint i have a torpedo tube propane heater gets it well over 100 degrees with no side effects
Reply
0
0
12-06-2011, 02:08 PM
#16
Elite Member
Thread Starter
iTrader: (3)
Join Date: Apr 2008
Location: Outside Portland Maine
Posts: 2,023
Total Cats: 19
I don't know about the fuel source, but I am not concerned with this in my garage, as it is a pretty drafty garage and there will be ventilation while the heater is being used. Any water vapor will be gone and dried pretty quickly.
Reply
0
0
12-06-2011, 02:09 PM
#17
Senior Member
iTrader: (4)
Join Date: Jan 2008
Location: Falls Church, VA
Posts: 1,361
Total Cats: 17
Sure, any time you burn hydrocarbons you're creating water vapor. With the garage door cracked for ventilation it doesn't feel terribly humid (subjective I know) and I don't get any condensation on the car's paint or glass surfaces. Propane is probably not be the best choice to heat a warehouse full of bare steel though. If you have engine blocks sitting around then it might be good to give the bores & bearing surfaces a light coat of WD-40 or something else to protect against moisture, but that's a good idea anyway regardless of your heating method.
Reply
0
0
12-07-2011, 06:17 PM
#19
Elite Member
Thread Starter
iTrader: (3)
Join Date: Apr 2008
Location: Outside Portland Maine
Posts: 2,023
Total Cats: 19
I bought a 100,000 btu propane unit, and it looks like it will work really well. I have one barbecue-style propane tank, and it looks like it will only last 2-3 hours. I wish they weren't so expensive to buy so I could have a spare.
Reply
0
0
Thread
Thread Starter
Forum
Replies
Last Post
bigmackloud
Miata parts for sale/trade
19
01-08-2021 11:24 AM
