Cooling a hot garage

I'm planning to use my 2 car garage as a workout room for lifting weights, sparring and riding a stationary bike. It is 20X20 with 10ft ceiling. I believe it is insulated and it has drywalled walls and ceiling and faces west. The only windows are the small windows at the tops of the roll-up garage door. In the summer the temps average about 95 degrees by 3 PM and occasionally gets up to 105. I'm thinking about getting this:
http://www.costco.com/product.asp?catid 3&subid37&prdid028523&hierid39&log=&navtop It seems good for the price if it can cool the garage to a comfortable temperature and exhaust the humidity that builds up from 2 or three people breathing and sweating with the doors closed.
Should that be adequate? I'm also thinking about getting a high velocity fan like this http://www.costco.com/product.asp?catid 3&subid37&prdid024734&hierid39&log=&navtopif the portable A/C isn't enough.
Should the portable A/C be adequate or will should the fan also be needed?
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I wonder, I see only one hose to the window. It seems to take cool air from the room , run it through the condenser,and then out to the outside world. How good can that be. Maybe I am missing something.

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JimL wrote: /snip/

*not cool air*
And the air that is passed thru the condensor comes from.....?
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That one is never going to do the job. You can start with one and keep adding them until it works for you. For that use, I would guess you will want 3-6 Three might handle it on a good day, but not if you have two or three people working out in there and they will take 2-10 hours to knock down the temp and humidity to start with.
--
Joseph E. Meehan

26 + 6 = 1 It's Irish Math
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I'm thinking about getting a window a/c installed in the wall. I can get a 10,000 BTU Goldstar for $238 or a 12,000 BTU Hampton Bay for about $268 It is a 2 car garage 20X20. It seems that 10,000 is supposed to be adequate for 400 sq feet, but should I get 12,000 because the garage gets the afternoon sun and it seems like it is not insulated insulated? I don't want to waste money with a too-big unit or have to cut out a bigger hole in the wall than absolutely needed, but I don't want to have to wait 5 hours for it to cool down either.
snipped-for-privacy@yahoo.com (yruslo?) wrote in message

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This is what i learned about garages and the heat: i got a typical brick home with the garage under the same roof.. the garage is NOT insualated and the reason why is you do not want the car which is pretty hot in the same living area thats suppose to be cool as the rest of the house... just the living area is insulated... you gotta get rid of the heat from a garage that is closed all day long.. i got two box fans in the side windows running all the time to get rid of the heat.. if i wanted to use a/c in the garage then it would not take long to cool it down... but with out getting rid of the heat it will take hours... example: people who have window units that are turned off when the leave to go to work in the morning come home to a house that is a real hot box(no one was in there for eight hours).. it takes them about three hours to get the house to cool down again... and they never had a hot car sitting inside their house all day heating it up even more... hope this helps....
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I think the 12,000 megawatt AC will be OK. I can open the main garage door for few minutes to exhaust the hot air that built up during the day before any starts their workout and I don't actually need the garage to be cold while working out. The A/C should at least make it bearable bringing in fresh outside air as well as dehumidifying the area so that it doesn't get steamy, stuffy and damp from the CO2 exhaled and the sweating. There will never be more than 4 people in there at a time and usually only 2.
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Let's do the math:
12000 megawatts or 12 gegawatts.
divided by 240Volts.....
I get 50 million amps.
umm... never mind.
Mike

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