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garage heater temp problems

jt1234

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Jan 24, 2008
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I recently install a 75,000 btu blower furnace in my 30 x 21 garage. The problem I am having is that it is warm from about waist up and much cooler from there down. The ceilings are about 10 1/2 feet. I am wondering what can be done about the temp difference. Would installing a ceiling fan help to push the air down? Any advice would be appreciated.
 
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jt1234

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Jan 24, 2008
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Is 1 fan enough for 30 x 21 and does the fan blow down or **** up.
Thank You
 

JMURiz

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winwfan.gif
 

BillK

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jt,
You might also be getting some cold from the floor if it is concrete. If you leave the heat on the slab should eventually warm up and help some too.
 

rickairmedic

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Technically although this seems bassackwards even to me durring cooling season the fan should pull the air up thus pulling the cold from the floor pushing it to the walls and letting it circulate back down durring heating season you want it pushing down thus pushing the hot air down from the ceiling . I know seems backwards to me too but thats the way it works.

Rick
 
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kbs2244

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Since the basic idea is air circulation, if you do not want to go through the trouble of mounting a home style ceiling fan, you can just hang one of those 20 inch window fans from a “J” screw in the ceiling.
Set it on low and put it at about the 1/3 point, blowing towards the 2/3 part of the garage.
It will get a swirl going that will even out your temp.
Those fans are surprisingly rugged. I have had one running in my basement to control dampness for 7 years of 24/7/365.
 

83trekker

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Since the basic idea is air circulation, if you do not want to go through the trouble of mounting a home style ceiling fan, you can just hang one of those 20 inch window fans from a “J” screw in the ceiling.
Set it on low and put it at about the 1/3 point, blowing towards the 2/3 part of the garage.
It will get a swirl going that will even out your temp.
Those fans are surprisingly rugged. I have had one running in my basement to control dampness for 7 years of 24/7/365.

could you explain a bit more on what window fan you use and how you mount it? sounds like a very different and interesting idea , just the way i like it!
any pics??:beer:
 

RonBou

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Farmington, CT
I use a ceiling fan reversed for real cold days. My heater also has louvres that you can redirect airflow with. Where is your heater/blower mounted and aimed?
 

6768rogues

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Home Depot has a good commercial type ceiling fan with a good pitch on the blades. I have two and they help with the heat and keep the floor dry.
 

mt_spiffy

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Jan 3, 2008
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Theoretically you run ceiling fans clockwise (updraft) for heat recirculation, and counterclockwise (downdraft) for summer cooling. However the only reason for this is to avoid a draft in the winter, and generally speaking fans are more effective when used in downdraft mode. Industrial ceiling fans, which are what I recommend for garages (and any other installation with a 10'+ ceiling) usually only run in downdraft. You simply run them at a lower speed during the winter, as fast as possible without feeling a draft.

To the Original Poster, you will notice a significant improvement in your heating using fans. I personally recommend the Envirofan Gold Line model.

Contact me if you're interested, i have plenty more information on ceiling fans.
 

mt_spiffy

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Since the basic idea is air circulation, if you do not want to go through the trouble of mounting a home style ceiling fan, you can just hang one of those 20 inch window fans from a “J” screw in the ceiling.
Set it on low and put it at about the 1/3 point, blowing towards the 2/3 part of the garage.
It will get a swirl going that will even out your temp.
Those fans are surprisingly rugged. I have had one running in my basement to control dampness for 7 years of 24/7/365.

I'm sorry, but this is not a great idea. It may be cheaper to install but it will cost you more in the long run.

First of all, these window fans move significantly less air than ceiling fans, and they direct the air straight ahead. So circulation will be much less and less even. Second of all, they draw significantly more current, usually at least three times as much as a 52" ceiling fan. Lastly they are noisy.

For a basement, unless your ceilings are 8' or more (or you're scary like me and will install ceiling fans low enough to cut your head), ceiling fans might not be an option. I would definitely recommend one of the circular air circulators, the all metal type that sits on the floor, to a plastic 20" box fan. OR if you can find an old all metal box fan, these are great, but draw a ton of current. Make sure to keep it oiled.
 

Ripp

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Feb 4, 2008
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Iowa
jt,
You might also be getting some cold from the floor if it is concrete. If you leave the heat on the slab should eventually warm up and help some too.

This is what happens in my garage..I have overkill on heat,but since i don't run heat all the time I get alot of radiant cold off the floor.
Not all that noticable when working waist or so up,but get on the stool or creeper...Brrr.
 

mt_spiffy

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Jan 3, 2008
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Every HVAC specialist I've spoken with has told me it is more cost effective to run heating/AC constantly, even if an area is only to be occupied once a week. It takes significantly more energy to modify the temperature in an area than to maintain it.

Of course, if you're not operating with a thermostat, that point is moot.
 
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