O.T. Query for heating attached garage. - Page 2
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  1. #21
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    Quote Originally Posted by rodhotter View Post
    lots of options depending on $$ + time your willing to spend. i heat my all block fairly new 900 sq ft + 9' ceiling with 10" of insulation quickly with a cheap pot belly burning wood + once heated it stays in the 40 range + long time after stove is out, coal is a longer lasting option that uses less time. a lot of variables as well as different codes to deal with unless your in the country. thecoalpale.com is a good forum about various heating options.
    Not an option if there are combustible materials (gasoline, propane, etc) in the garage.

    Tom

  2. #22
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    If the heating is just for the dogs than put in a warmed kennel area or dog house.

    Tom

  3. #23
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    Edit: yer dogs will love it. I have a 6' x 3' element under an area rug in my study. The cat is stuck to it, it feels like the sun is shining on the underside of the floor. Uses an arduino nano, pot, analog temp sensor taped to the heating element and a sealed 120v relay.

  4. #24
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    Dammit! I somehow deleted my first post.

    Think about underfloor electric far-infrared heat. It can be installed under floor mats and is very safe. It works slowly, but will keep yer tootsies nice and toasty.

  5. #25
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    Quote Originally Posted by CarbideBob View Post
    My garage is attached.
    I insulated the shit out of it and made "curtains" out of old blankets to go across the door.
    Then I just tapped into the house heating system with one input to the garage and no cold air side.
    Stays nice and warm. Putting old carpeting that I do not care about on the floor helped.

    Your ceiling is maybe not high enough for a radiant tube.
    Bob
    Not legal, like, at all

    i am sure you are smart enough to make it work, but if you get one of those new keyless cars and forget to shut it off, game over

    End of the day, no code compliant way to share FHA heat with a garage

    Hot dawg probably reasonable

    mini split heat pump with 'hyper heat' or the equivalent will work to very, very low temps. Especially in a garage where an occasional vortex won't bug you they are rated down to teens below zero and reports of decent output below that

  6. #26
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    I would get a 4x8 sheet of rigid insulation, 2"+ thick and put it on the floor. Put the heat mat mentioned earlier on top of that and some carpet or blankets on that and the dogs will love it. Be sure to set it on insulation so the cold floor does not suck up all the heat.
    To be really nice to them put a roof and walls over it out of the same 2" rigid insulation to keep heat in. Just make it so the roof lifts off for ease of cleaning/blanket changing etc.

  7. #27
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    Quote Originally Posted by gustafson View Post
    Not legal, like, at all

    i am sure you are smart enough to make it work, but if you get one of those new keyless cars and forget to shut it off, game over

    End of the day, no code compliant way to share FHA heat with a garage
    ....
    No cold air return, check your codes.
    You can exhaust heat out of your house system all day long.
    Do you own a clothes dryer that vents outdoors?
    No return side.......different deal.
    Bob

  8. #28
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    Quote Originally Posted by CarbideBob View Post
    No cold air return, check your codes.
    You can exhaust heat out of your house system all day long.
    Do you own a clothes dryer that vents outdoors?
    No return side.......different deal.
    Bob
    But in conjunction with whatever he has going on with the curtains/door.. if there isn't a good seal and properly rated door, it's a bad deal. The cold air intake in the house will pull from the garage.
    Depending how tight the garage is, pushing air into it could also increase likelihood cold air intake is sucking air out though door seals, etc.

  9. #29
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    Decided to put an overhead heater in, it will add value to the house and if I need to actually heat the garage when I need it its there.
    Thanks for all the suggestions.

  10. #30
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    Far safer, easier and providing cooling as well is a mini-split heat pump. Many decent inexpensive units, easy to install with only a small hole to the exterior and quite efficient.

    Most heat pumps require a return air temperature of 60 degrees or so. Anything less can cause the coils to ice up. Check the specifications for your particular unit.

    Your 800 square foot garage will be happiest with a 40,000 BTUH gas or propane unit heater like the Amazon unit mentioned previously. In a garage, most codes require that the unit be at least 18 inches off the floor.

  11. #31
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    Just need something to keep it aroung freezing , even when its -10 its above 0 in there.

    There was comment about using a Mitsubishi Hyperheat Heat Pump.
    We specify these quite often and they are excellent units, but not for your purpose.
    The coils freeze if the room temperature is below 61F (50F at the extreme)
    From the Hyperheat manual.

    " Normally, the minimum temperature setting in HEAT mode is 61°F
    (16°C). However, during SMART SET operation only, the minimum
    temperature setting is 50°F (10°C)"

    If you have natural gas, a unit heater will be best for your situation.

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  13. #32
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    Quote Originally Posted by CarbideBob View Post
    No cold air return, check your codes.
    You can exhaust heat out of your house system all day long.
    Do you own a clothes dryer that vents outdoors?
    No return side.......different deal.
    Bob
    I suggest you check your codes

    no, no you cannot

  14. #33
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    They make small heating pads for pets. You might even build a small dog house to contain the heat better.

    The infrared lamps work well. I've got a greenhouse with them. Two thermostatically controlled circuits, one that kicks on at 40°, the other kicks on at 35° if the first isn't enough.

    Finally, you might consider installing an old electric furnace. You can probably find one pretty cheap at a local HVAC contractor. When they put a new A/C-furnace in my house, I kept the furnace and put it in my 1500 square foot barn. Works great and doesn't have the problems that a combustion heater has.


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