I'm needing to heat my 2 car attached 22x22. We get pretty cold here in Jan. -20 or -30 C. I use it as a work shop all year round. Just back out the cars to make room. Does anyone have recommendations? Im thinking 220 volts ac. Seems simple, no chimney etc. Thanks.
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Garage heat
- Thread starter Mike99
- Start date
Bruce Amacker
Well-known member
How high of ceiling? What insulation in walls/ceiling? Insulated door? Too many questions, not enough info. My gut says 220 won't be enough BTU's in that climate. If you go NG, don't go infrared.
Dick in Wisconsin
Well-known member
Seal, insulate to the max, and vapor barrier before you down anything else. Make sure the doors seal tightly. Consider putting on Green Hinges (Google them).
Do you have natural gas or propane available?
How many days a winter do you want to heat? Bruce Amacker is probably right. How big of electrical service do you have? How many amps?
Do you have natural gas or propane available?
How many days a winter do you want to heat? Bruce Amacker is probably right. How big of electrical service do you have? How many amps?
220 at what amps?
electric is an expensive way to heat .
electric is an expensive way to heat .
finn
Well-known member
If you're going to need an electrician , you may as well bypass the electric heat idea and go to a propane hanging heater.
The propane company will set the tank, run the line, install the regulator, and leak check the system after you hang the heater, install the flue, do the inside gas piping, and wire the 120v for the fan, thermostat, and ignition.
You
The propane company will set the tank, run the line, install the regulator, and leak check the system after you hang the heater, install the flue, do the inside gas piping, and wire the 120v for the fan, thermostat, and ignition.
You
theoldwizard1
Well-known member
I'm needing to heat my 2 car attached 22x22. We get pretty cold here in Jan. -20 or -30 C. I use it as a work shop all year round. Just back out the cars to make room. Does anyone have recommendations? Im thinking 220 volts ac. Seems simple, no chimney etc. Thanks.
Electric resistance heat is THE HIGHEST COST OF OPERATION TO HEAT ANY GIVEN SPACE ! If it is only once or twice a month, it may be a reasonable solution.
I do NOT recommend any unvented burning heater for many reasons. Besides the danger of CO poisoning, they all give off a lot of water vapor.
Dick in Wisconsin
Well-known member
Those green hinges are a great Idea! Crappy tire? Home depot?
Come to think of it never did vapour barrier 12 years ago when I insulated because I wasnt planning on heating then. Just drywalled and painted.
Green Hinges: http://greenhingesystem-com.3dcartstores.com/
Call them. Lester is waiting to talk to you.
Unless you get electricity for almost free or use it (have it "on") only a few times a month, there is NOTHING more expensive than electric resistance heat.
If you go with propane that is NOT vented outside you're going to get lots and lots of moisture in the garage. Since you didn't use a vapor barrier that moisture will find its way into the wall cavities and insulation, diminishing the effectiveness of the insulation.
Maybe you can paint the drywall with some kind of moisture proof paint.
What did you do with the ceilings?
Does anyone know if the newer propane/nat gas heaters require a chimney through the roof or can I run it sideways through my garage wall. My he furnaces are both like this with plastic exhaust pipes because the temps arnt that high to require metal and other fire proofing materials. Not sure how he the ceiling mounted heaters are.
Bruce Amacker
Well-known member
With a powered (fan driven) exhaust, sideways through the wall is fine, that's how mine is.......
finn
Well-known member
With a powered (fan driven) exhaust, sideways through the wall is fine, that's how mine is.......
That's how I did mine.
Can't use cheap B vent for horizontal flues anymore, though.
Randy in Maine
Well-known member
I can run the "power exhaust" fan for my propane fired Baxi boiler using my camping battery if the power goes out for quite a while. They don't use much power to vent out the exhaust gasses though the wall.
HoosierBuddy
Well-known member
The through the wall high efficiency unit is great, but you do have to use a condensate line. If you have a drain nearby that would work, or you could run it to a sewer...or you can run it outside, but you might want to use heat tape or something like that to keep it from freezing.
Phil
Phil
klassenl
Well-known member
At 22x22 a 5000w electric heater would probably keep up on 9 out of 10 weeks if you keep it on all the time. If you only go in there on Saturday moring to work and turn it on when you start working it will take most of the day to get comfortably warm.
I have a 5kw heater in my garage (a little smaller than yours) and I only run it when I'm in there. It works.
I have a 5kw heater in my garage (a little smaller than yours) and I only run it when I'm in there. It works.
6768rogues
Banned
If you have natural gas or propane, hang a Reznor heater. They are reasonably priced, have power vents that can go up or out a side wall, and heat the space quickly. They are up and out of the way. I have several that I leave at 45 degrees but if I want to work in the building I turn it up to 60 and very shortly the building is warm. Around here, NG is about one fourth the cost of electricity for heating.
OP . . . by what you've posted, sounds like you're in Canada . . .
. . . . likely in the city with 22'x22' attached garage.
UPDATE GJ Profile with a Location.
That small of space could be heated with electric 240v that is left on all winter to keep at reasonable temperature . . . ie 40 to 50 degrees F. However, as other GJer's have mentioned, this will be EXPENSIVE to maintain . . unless you have super cheap "hydro" electric power.
Otherwise, NG is plentiful and likely already supplied to your house for furnace so just extend the line to garage and install vented hanging NG heater like Reznor, Modine, Sterling, Mr Heater, etc. All you would need would be 30K to 45K Btu heater . . . at most 50K Btu hanging NG heater, which likely would be overkill if garage is well-insulated.
. . . . likely in the city with 22'x22' attached garage.
UPDATE GJ Profile with a Location.
That small of space could be heated with electric 240v that is left on all winter to keep at reasonable temperature . . . ie 40 to 50 degrees F. However, as other GJer's have mentioned, this will be EXPENSIVE to maintain . . unless you have super cheap "hydro" electric power.
Otherwise, NG is plentiful and likely already supplied to your house for furnace so just extend the line to garage and install vented hanging NG heater like Reznor, Modine, Sterling, Mr Heater, etc. All you would need would be 30K to 45K Btu heater . . . at most 50K Btu hanging NG heater, which likely would be overkill if garage is well-insulated.
Here in Winnipeg we pay 7.9 cents/ kwhr. Nat gas is 10 cents per cubic meter, 36500 btus. Way more btus for your buck with gas and produces far more heat than electric. Its a no brainer. I was quoted $1500 to run 220 to the garage and install the heater because I need a sub panel. Im expecting a quote of around $2000 for the nat gas unit.
Well after getting a quote for a little over 4 grand for nat gas im going the 220 volt elec route. At 40 cents an hour I won't be using it continuosly. I found a 6kw unit heater at Princess auto for 269 bucks and an electrician friend to hook it up. Ill run the wire and he'll tie it in to the box and check my work.Problem solved. Too bad about the nat gas tho. Would have cost a buck a day to keep the garage warm 24/7.
finn
Well-known member
You'll be revisiting this decision in a couple of years.
D45
Well-known member
Well after getting a quote for a little over 4 grand for nat gas.
$4,000 for what??????????????
theoldwizard1
Well-known member
concur !too many questions, not enough info. My gut says 220 won't be enough btu's in that climate.
Adk Mike
Well-known member
Get a Modine Hot Dawg. HD45. Google it. 600 or so on line. Then find a new propane company.
I've had one in my shop for 13 years. Can't be beat.
I've had one in my shop for 13 years. Can't be beat.
Thats what I thought. That included running the gas line from the side of the house through the garage wall, a total distance of only 25 feet and hanging a resnor 50,000 btu heater in the ceiling. Talk about sticker shock. Im in Winnipeg by the way. -40 F/C in Jan is not unheard of. My garage is well insulated.
Settled on a 6kw unit from princess auto. Ran the 10/2 wire to the box myself and will get the electrician to hook it up in a few weeks. Also installed a 180 cfm range hood over the electric grill for winter cooking. This should also help keep the humidity under control. Hope 180 is enuff but can alway upgrade to a bigger blower if necessary. Anyone else install vents in their garage?
Get a Modine Hot Dawg. HD45. Google it. 600 or so on line. Then find a new propane company.
I've had one in my shop for 13 years. Can't be beat.
What is the diameter of your chimney? I have a 41/2 inch hole in my wall with a vent but Im thinking I would need to chop out another larger hole for propane chimney. Do you have any humidity issues?
6768rogues
Banned
I bought a new Reznor 100,000 btu unit that is certified for residential use (ok in an attached garage) for $800 and installed it myself in a day with about a couple of hundred dollars in pipe and vent materials. Your quote was a bit high.
theoldwizard1
Well-known member
I'm needing to heat my 2 car attached 22x22. We get pretty cold here in Jan. -20 or -30 C. I use it as a work shop all year round. Just back out the cars to make room. Does anyone have recommendations? Im thinking 220 volts ac. Seems simple, no chimney etc. Thanks.
At those temps, if you have no insulation, 2 meters away your front side will be roasting and your back side will be freezing.