heat

[grnova]

I am alittle stumped :headscrat on what size hot dawg or( any other ) heater to buy I have an 864sqft garage with 11' ceiling any suggestions. I am using natural gas.

Tim

[Luckydevil]

Try this...

http://www.firstrays.com/heater_calculator.htm

Considering the heat loss value numbers they listed are for thin and poorly insulating walls, I would try something like .2 or .3 for the heat loss value.

I'm not sure how accurate this thing is, but it's a start.


Here is another good link... http://www.northerntool.com/catalog/buyersguides/heaters/

[Hairy Dog]

I'd go with the 75,000 btu.

Just put one in my 32' x 28' and it does a very good job.

Heats it up in a hurry.

Hairy Dog

[MyMopar]

I went with the HD 60 for mine. 2 bay oversize with loft, ceiling height is 14' & 22'. It also heats my side workshop.

[RonBou]

I put a 60,000 BTU in my 2 car garage and it is rated for a 3 car which is approx 864 sq ft. A 75,000 unit may be a little overkill but if you ever expand your garage you won't have to replace the heater.

[Roadster]

I am alittle stumped :headscrat on what size hot dawg or( any other ) heater to buy I have an 864sqft garage with 11' ceiling any suggestions. I am using natural gas.

Tim

Modine (Hot Dawg maker) has sizing information on their website.

http://www1.modine.com/publications/litnav.php?c1=CHVAC%26R&c2=Modine+Hot+Dawg&c3=Consumer+Literature

[355ss]

I have 1200 sqft w/ 10.5 ft ceilings and I was able to heat it with 30000 btu's to 70 degrees inside and -10 degrees outside. My heater was still cycling so I had excess heat capacity. But it took about 45 minutes to raise the temp from 50 to 70. It all depends on insulation, infiltration, temperature difference and ramp rate. This year I have replaced my old unit with a 60,000 hot dawg just to lower the amount of time it takes to raise the temp. The more you oversize the unit the more it will cycle on and off.

[dboat]

I have 1200 sqft w/ 10.5 ft ceilings and I was able to heat it with 30000 btu's to 70 degrees inside and -10 degrees outside. My heater was still cycling so I had excess heat capacity. But it took about 45 minutes to raise the temp from 50 to 70. It all depends on insulation, infiltration, temperature difference and ramp rate. This year I have replaced my old unit with a 60,000 hot dawg just to lower the amount of time it takes to raise the temp. The more you oversize the unit the more it will cycle on and off.

Agreed, I have a 30k btu, ventless in mine. i keep it at about 50 degrees and didnt really need to raise it during last winter.. I do have to run a dehumidier though. My garage is fairly tight, well, for a garage.
Dana

[DaveL.]

My garage is 1200 sq ft.,9 1/2 cieling. I called a Modine factory rep and he sized mine (HD75) 75000 btu. I'd say an HD60 would suit you fine. Make sure to insulate your cieling to at least R-30.

Dave

[krooser]

try this...
http://www.superiorradiant.com/

[mwh]

Krooser,

Did you you do the install yourself on that heater? Did you pipe the inlet/exhaust horizontal or vertical?

Thanks,
Marc

[krooser]

I've got a 30', 80K radiant tube heater. Simple install..I did it myself with a little help from my friends.

I'd use the RE series...REAL simple...hang it high and it will cover the shop floor pretty good. 30 to 45K btu's should be enough....

I had to shorten my heater this year as I walled off one third of my shop...just took it down, sawed off two feet of the tube a re-hung it.