I need a gas garage heater?!? Help
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  1. #1
    Join Date
    Feb 2009
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    I need a gas garage heater?!? Help

    Well damn it got chilly out of nowhere

    I have a little 220v heater on the ceiling, insulated doors (and one jacked up garage door seal). My garage gets pretty damn cold and the little heater doesn't help all that much. I could leave it on for 8 hours before it brings the garage up to a workable temp. I had a gas line piped into the garage when the furnace was replaced and so I'm looking for recommendations on heaters.
    Would prefer something I can hook up to the gas and outlet and be done and hopefully not have to pipe a vent to the outside. And of course something with a sealed chamber so it's so nothing can explode. I'm pretty green in this area so any help is appreciated
    Thanks
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  2. #2
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    Re: I need a gas garage heater?!? Help

    A non vented unit? Wouldn't carbon monoxide be an issue? Co2 detector would be mandatory, IMO.
    T man.


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  3. #3
    Join Date
    Nov 2010
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    Re: I need a gas garage heater?!? Help

    You need a vented I have a Reznor garage natural gas heater. Mounts tight to the ceiling so it doesn't take a lot of space.
    Works like a champ.
    You didn't say how big your garage is.
    Tom

  4. #4
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    Re: I need a gas garage heater?!? Help

    Definitely need a vented heater. Many are marketed under Reznor, Mr. Heater, Modine, etc. I have low intensity radiant tubes in my home garage and they do not have an open flame but do take intake air from outside and exhaust outside. I used them in my garage painting automobiles for many years so pretty safe to be around. They are Detroit Radiant Products heaters.

    Updated version of mine which were new in 1984. Never a single problem with them over the years:

    https://www.reverberray.com/products...rs/ls3-series/
    Last edited by Slob; 10-12-2018 at 09:50 AM.
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  5. #5
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    Nov 2006
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    Re: I need a gas garage heater?!? Help

    I do electrical for a living.

    We wire a fair amount of hanging unit heaters such as Reznor and Modine in shops, also infrared tube heaters. For what it's worth.

  6. #6
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    Oct 2015
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    Re: I need a gas garage heater?!? Help

    I have a 28x42 shop with 12' walls. It is heated with a 60,000 btu Modine hanging space heater. In sub zero weather I can go turn on the heat and 30 minutes later it is 55-60 degrees. I never heat it to 70 or I would be sweating while I work. 50-55 degrees seems good for working for me.

  7. #7
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    Re: I need a gas garage heater?!? Help

    Quote Originally Posted by thegary View Post
    I have a 28x42 shop with 12' walls. It is heated with a 60,000 btu Modine hanging space heater. In sub zero weather I can go turn on the heat and 30 minutes later it is 55-60 degrees. I never heat it to 70 or I would be sweating while I work. 50-55 degrees seems good for working for me.
    50-55 F. AHHHHHHHHHH
    That's too cold except for one kind of "work"

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  8. #8
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    Jun 2012
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    Re: I need a gas garage heater?!? Help

    This is the style heater we put in my brothers shop.

    BTU will depend on size and expected temps.

    https://www.northerntool.com/shop/to...SABEgJrCfD_BwE

    A non-vented heater will put too much moisture into your shop - I don't think you would like it.
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  9. #9
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    Re: I need a gas garage heater?!? Help

    Quote Originally Posted by MinnesotaDave View Post
    This is the style heater we put in my brothers shop.

    BTU will depend on size and expected temps.

    https://www.northerntool.com/shop/to...SABEgJrCfD_BwE

    A non-vented heater will put too much moisture into your shop - I don't think you would like it.
    That's what I use. Good heater, not very loud and gets up to temp really fast. The exhaust isn't that big and can exit through a wall.
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  10. #10
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    Re: I need a gas garage heater?!? Help

    Put in a williams wall furnace.

    https://www.homedepot.com/p/Williams...622A/100059323

    I have this one in white. Installed it myself despite the homer depot warnings to the contrary.

    https://www.homedepot.com/p/Williams...-303212279-_-N

    I converted it to run on propane and feed it from a 100lb tank outside the shop. Takes some familiarity with running black iron pipe and a two stage regulator for propane.

    No electricity required. I switched the manual thermostat it came with out for one a very inexpensive digital thermostat that can be set as low as 45F. Just enough heat to keep the shop comfortable and keep the paint stored there from freezing.

    I like that it makes no noise, needs no power and just relies on convection to distribute the heat in the shop. No stray breezes to mess with your shielding gas. Best option I could find to retrofit a shop without any heat. I think it's a little simpler to install than the ceiling mounted units. I've only got 8' ceiling height in the shop, so an overhead unit would be a real head-banger.
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  11. #11
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    Re: I need a gas garage heater?!? Help

    I have an old Modine 70k BTU ceiling mount in my 24x28 garage and it works well even when it's down to -20F outside. It has the 120v gas valve solenoid so I just installed a base board heater thermostat on the wall.
    Mike
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  12. #12
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    Re: I need a gas garage heater?!? Help

    Shop equals either heated and ISOLATED concrete thermal battery floor OR tube radiant heater.

    Any system that just heats the shop air costs too much fuel to keep the shop warm.

    UnVented means you are putting acidic water into the space as a product of combustion.
    NG & Propane both produce acid when burning.

  13. #13
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    Mar 2015
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    Re: I need a gas garage heater?!? Help

    I have two smaller shops both with Modine Hot Dawg heaters. I am pleased with them both. They are a medium efficiency heater. I don't burn enough gas to be able to afford installing a high efficiency unit.

  14. #14
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    Oct 2006
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    Illinois
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    Re: I need a gas garage heater?!? Help

    The Modine Hot Dawg heaters are what we always installed. Reasonable , great job, and variety of sizes. You can get a vent free heater too but size is limited. Two could be used if needed.
    Are walls and ceiling insulated ?? What are garage dimensions ? The ventless do not have a fan where as the flue type ones do.
    https://www.menards.com/main/heating...ers/c-6867.htm

  15. #15
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    Re: I need a gas garage heater?!? Help

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    This...Reznor. Heats my 1800 sq ft shop no problem. Mine is propane...very efficient too.

  16. #16
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    Re: I need a gas garage heater?!? Help

    I’ve had ceiling mounted units but the best shop heater that I had in a cold climate was a good used NG home furnace that had been removed from a flooded basement. The unit was fine (a little rust around the bottom); my HVAC buddy gave it to me for free.

    On top of the furnace we built a square duct with a couple of registers coming off. Darn thing was quiet, heated up the shop quickly and did not use much gas. The ducting was great for distributing the heat too.

    This was for a converted 3 car garage shop. For a more industrial building with high ceilings, the Modine / Reznor would be a better approach.
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  17. #17
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    Re: I need a gas garage heater?!? Help

    Quote Originally Posted by Tarmstrong View Post
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    This...Reznor. Heats my 1800 sq ft shop no problem. Mine is propane...very efficient too.
    Whats the exhaust pipe situation?

    do those have a forced exhaust like a power vent? or do you pipe it out the wall/ceiling with an insulated pipe etc?
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  18. #18
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    Re: I need a gas garage heater?!? Help

    Quote Originally Posted by John T View Post
    Whats the exhaust pipe situation?

    do those have a forced exhaust like a power vent? or do you pipe it out the wall/ceiling with an insulated pipe etc?
    My brothers is power vented out the wall.
    Very easy installation.
    Dave J.

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  19. #19

    Re: I need a gas garage heater?!? Help

    Quote Originally Posted by MinnesotaDave View Post
    This is the style heater we put in my brothers shop.

    BTU will depend on size and expected temps.

    https://www.northerntool.com/shop/to...SABEgJrCfD_BwE

    A non-vented heater will put too much moisture into your shop - I don't think you would like it.
    Great heater! I have one in my 30' X 40' garage and another in my 40' X 43' shop with 14' sidewalls. Very happy with their performance.

  20. #20
    Join Date
    Oct 2018
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    SE Nebraska
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    Re: I need a gas garage heater?!? Help

    My shop is 30x26 and this puppy heats it great.Name:  FB9B5557-EAA7-4252-945E-7CE8FD803492.jpg
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  21. #21
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    Dec 2014
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    Northern California
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    Re: I need a gas garage heater?!? Help

    Quote Originally Posted by John T View Post
    Whats the exhaust pipe situation?

    do those have a forced exhaust like a power vent? or do you pipe it out the wall/ceiling with an insulated pipe etc?
    I have large eves on my garage...in snow country. I chose to vent thru roof...

    As my install was as I built the garage it was easy to figure out the details and location. It is actually in the middle of back wall pointing toward the shop activity area.

  22. #22
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    Re: I need a gas garage heater?!? Help

    I rewired the fan power off a three way switch so I can run the fan continuous and have the flame cycle or have the fan cycle along with the flame. I figure it saves some gas with the fan running continuous.
    Mike
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