1. Welcome Hearth.com Guests and Visitors - Please enjoy our forums!
    Hearth.com GOLD Sponsors who help bring the site content to you:
    Hearthstone Soapstone and Cast-Iron stoves( Wood, Gas or Pellet Stoves and Inserts)
    Caluwe - Passion for Fire and Water ( Pellet and Wood Hydronic and Space Heating)

Help heating garage

Post in 'DIY and General non-hearth advice' started by ArsenalDon, Jan 13, 2013.

  1. Eaglecraft

    Eaglecraft Member

    Joined:
    Aug 18, 2010
    Messages:
    199
    Loc:
    Eastern Idaho

    Don:

    Natural gas will be cheapest to run, but it requires venting and the units are not under $100.

    Several years back I insulated my attached garage - about 30 feet by 40 feet in size - with R19 in the walls, R52 in the ceiling, and installed a steel, foam cored double garage door, having one good sized window with double pane and low-E glass, etc.

    I heat this structure with two King Compact Room Heaters - PAW Series, Pic-A-Watt, specifically PAW24221. They are about 6 inches high by 12 inches wide by 4 inches deep. They fit inside a wall can that comes with the heater. These are both 240 Volt units that I run at 1500 watts each, for a total of 3000 watts when operating. I used an old electric water heater circuit rated for 30 amps? I don't remember - that we replaced with natural gas. I have a thermostat that I set for 50 degrees F - just to keep things from freezing. These are wall mounted units - mounted between the wall studs. They have blower motor fans and I have no trouble keeping my garage well above 50 degrees.

    The nice thing about the Pic-A-Watt series is that you can select the current input from 500 Watts to 2250 watts just by changing the arrangement of the internal jumper wires. You can change these jumper wires after the fact so that you can increase or decrease the power of the unit at will. I have been running these units for four years now - with no issues.

    These wall mounted units are much safer, more durable and more flexible that the Milk-House-Heaters. I went through several of the Milk-House-Heaters in the past. I found that they tended to rust, and the thermostats were not reliable.

    Good luck with your install...
    Highbeam likes this.

    Helpful Sponsor Ads!





  2. MasterMech

    MasterMech Guest

    A shop I used to work in switched from a propane fired forced air system to a propane fired radiant tube/reflector type system. Rediculous how much warmer the shop actually felt. Was excellent for thawing out machinery too. Snow/ice melted off things much faster than before.
  3. ArsenalDon

    ArsenalDon Minister of Fire

    Joined:
    Dec 16, 2012
    Messages:
    749
    Loc:
    Meadow Valley, CA
    I loved natural gas when I was in the city, but now I am up in the mountains. it is electric, propane or wood.
  4. lukem

    lukem Minister of Fire

    Joined:
    Jan 12, 2010
    Messages:
    3,687
    Loc:
    Indiana
    The building I spend the majority of my time in is just shy of 1M sq ft so heating the whole thing all the time to a "comfortable" temperature isn't cost effective. It is heated with Corayvac above the main work areas. Its kinda weird because you can be cold in one place then walk 5 feet and you are instantly warm. Radiant heat is nice because it doesn't have a big ramp up period...but it does have downsides too.
  5. ArsenalDon

    ArsenalDon Minister of Fire

    Joined:
    Dec 16, 2012
    Messages:
    749
    Loc:
    Meadow Valley, CA
    And the downsides in your experience are...........
  6. lukem

    lukem Minister of Fire

    Joined:
    Jan 12, 2010
    Messages:
    3,687
    Loc:
    Indiana
    It's not a really even heat. If there's something between you and the heat source obstructing a clear line of sight you won't feel the heat. This can be overcome by mounting on the ceiling (if your ceilings are high enough). The further you get away from the heat source, the colder it feels...and too close can be too hot. A well placed radiant heater or two can work well...just don't expect to park one in the corner and have a nice even heat like a convection type heater.
  7. ArsenalDon

    ArsenalDon Minister of Fire

    Joined:
    Dec 16, 2012
    Messages:
    749
    Loc:
    Meadow Valley, CA
    9 foot cielings, but honestly as long as I get some heat in there I think it will be fine, as I said before at -1 outside it was 46 inside with no heater at all...
  8. Highbeam

    Highbeam Minister of Fire

    Joined:
    Dec 28, 2006
    Messages:
    9,099
    Loc:
    base of Mt. Rainier on the wet side, WA
    Just idle your truck in the shop for an hour or so.
  9. Seasoned Oak

    Seasoned Oak Minister of Fire

    Joined:
    Oct 17, 2008
    Messages:
    3,665
    Loc:
    Eastern Central PA
    If you have the overhead kind it will gradually warm the floor so as to warm the air above it. In this case it is nice to have the floor insulated as well so your not trying to warm the earth below, just your garage.
  10. MasterMech

    MasterMech Guest

    !!!


    That's for much bigger problems than no heat. _g
  11. lukem

    lukem Minister of Fire

    Joined:
    Jan 12, 2010
    Messages:
    3,687
    Loc:
    Indiana
    I notice that when I park my hot truck in the garage in the evening it is about 5-10* (guessing) warmer in the garage the next morning than if I don't.
  12. Highbeam

    Highbeam Minister of Fire

    Joined:
    Dec 28, 2006
    Messages:
    9,099
    Loc:
    base of Mt. Rainier on the wet side, WA
    I hope everyone realizes that I was just joking. Sheesh, sometimes when you reread your posts you think twice.
    Jack Straw likes this.
  13. FanMan

    FanMan Feeling the Heat

    Joined:
    Mar 4, 2012
    Messages:
    313
    Loc:
    CT stix & upstate NY
    You have room for cars in your garage??? !!!
  14. begreen

    begreen Mooderator Staff Member

    Joined:
    Nov 18, 2005
    Messages:
    48,123
    Loc:
    South Puget Sound, WA

    This is relative to the size. I am using one of these in my new shop that is well insulated and it works great .
  15. Seasoned Oak

    Seasoned Oak Minister of Fire

    Joined:
    Oct 17, 2008
    Messages:
    3,665
    Loc:
    Eastern Central PA
    The propane torpedos are quite noisy.(And also require electricity) I use one if i have to but opt for the radiant single or double tank top Mr heaters. If i were working in one place all the time i would opt for a ceiling mounted over the work bench kind,either electric or propane.
  16. Highbeam

    Highbeam Minister of Fire

    Joined:
    Dec 28, 2006
    Messages:
    9,099
    Loc:
    base of Mt. Rainier on the wet side, WA
    I've been shopping. The big double tank top mr heaters put out 30,000 btu. The torpedos are available up to at least 200,000 btu with most at 100,000 btu and they are not considered radiant. Due to the huge output differences these heaters are really in different leagues.
  17. Swedishchef

    Swedishchef Minister of Fire

    Joined:
    Jan 17, 2010
    Messages:
    2,393
    Loc:
    Quebec, Canada
    I am jumping into the game late....but if you could get some 240 wiring in there, the best option (which is more than $100 though..) is http://www.ouellet.com/residential-heating-specs-usa.aspx?i=56 They are called air forced difusers and you can get them in 10 000 watts on 240 if you want. They principle is great: they heat the alread warm air and push it downward. That makes for much less heating ( air temp at ceiling height is much warmer than ground level requiring less energy to take it up to temp). I just installed a 4K watt one in my little 16X24 garage with R14 in walls and R20 in ceiling and it heats it up great!

    Andrew
    Don Williams likes this.
  18. ArsenalDon

    ArsenalDon Minister of Fire

    Joined:
    Dec 16, 2012
    Messages:
    749
    Loc:
    Meadow Valley, CA
    Good thought...I will look into this option also with my electrician in the fall....for now I have decided I have to suffer a bit and go cheap....building garage and daughter getting married in Oct....no cash left
  19. Swedishchef

    Swedishchef Minister of Fire

    Joined:
    Jan 17, 2010
    Messages:
    2,393
    Loc:
    Quebec, Canada
    Money doesn't grow on trees and I totally understand! I wish someone would have paid for my wedding!!!! lol

    Those heaters are great. Seriously great!!!

    Andrew
  20. semipro

    semipro Minister of Fire

    Joined:
    Jan 12, 2009
    Messages:
    2,346
    Loc:
    SW Virginia
    I genuinely feel sorry for those duped by the "miracle heaters" like Edenpure...including my parents who are retired and on a fixed income.

    Those that sell those things are no better than the fly-by-night "duct cleaning" and "seal your driveway" types that prey on the elderly.
  21. semipro

    semipro Minister of Fire

    Joined:
    Jan 12, 2009
    Messages:
    2,346
    Loc:
    SW Virginia
    I'm not sure what you mean by "100% myth" but I can report that a serous amount of condensation formed on our windows every time (and only when) I cranked up our ventless heater.
  22. Seasoned Oak

    Seasoned Oak Minister of Fire

    Joined:
    Oct 17, 2008
    Messages:
    3,665
    Loc:
    Eastern Central PA
    Ventless heaters will produce both moisture and carbon monoxide and other products of combustion all while using up all the oxygen in the room. They are illegal
    in many areas for good reason.
  23. Seasoned Oak

    Seasoned Oak Minister of Fire

    Joined:
    Oct 17, 2008
    Messages:
    3,665
    Loc:
    Eastern Central PA
    Its not surprising that some will believe the hype, especially when some "other" heat source is providing 80-90-% of the heat and the electric is only making up the difference from say 60 to 75 degrees. Sure the light bill wont go up much,any $15 heater could do that.
  24. Seasoned Oak

    Seasoned Oak Minister of Fire

    Joined:
    Oct 17, 2008
    Messages:
    3,665
    Loc:
    Eastern Central PA
    One of my friends is a family doctor and he bought the pitch as well ,thought he was going to heat a commercial building with these things.After he spent about a grand on those miracle boxes and got his first electric bill,he wishes he would have listened to me when he asked my advice on them. Now his gas bill looks a whole lot better.
  25. velvetfoot

    velvetfoot Minister of Fire

    Joined:
    Dec 5, 2005
    Messages:
    6,650
    Loc:
    Sand Lake, NY
    Just curious, what kind of gas? Propane is more expensive than oil around here, and both, considering efficiencies, are approaching resistance heat. I never thought I'd see the day.

Share This Page