Garage/Workshop Cooling - Router Forums
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post #1 of 26 (permalink) Old 08-10-2012, 07:11 AM Thread Starter
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Default Garage/Workshop Cooling

I live in Phoenix, AZ. Summers get real hot (100+). Would welcome any ideas on how to cool down my garage/workshop so that I can get some work done in the summer months. Central airconditioning is not an option.
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post #2 of 26 (permalink) Old 08-10-2012, 09:44 AM
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I live in Phoenix, AZ. Summers get real hot (100+). Would welcome any ideas on how to cool down my garage/workshop so that I can get some work done in the summer months. Central airconditioning is not an option.
45 average morning humidity and 18 percent average afternoon percent May - September says swamp cooler. I'll venture to say they are probably real common in the Phoenix, AZ climate.
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post #3 of 26 (permalink) Old 08-10-2012, 09:56 AM
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I live in Phoenix, AZ. Summers get real hot (100+). Would welcome any ideas on how to cool down my garage/workshop so that I can get some work done in the summer months. Central airconditioning is not an option.
Well, if you want AC & heat + a major investment, a mini-split is what we selected for a porch remodel - the Mitsubishi Mr. Slim shown below; the smaller unit is on the brick wall of the porch as shown; the conduit goes below the floor to the main unit under the porch floor - with a studded wall the conduit contents could be hidden. The porch is about the same size as your shop but w/ a standard height ceiling.

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post #4 of 26 (permalink) Old 08-10-2012, 10:02 AM
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Never been to AZ, but in UT we go almost every year, they use the swamp coolers and they are cheap, well when I thought I might try one in AR which will not work, lol

Did quick look at HD and found this one, not what you might want but its a start, cheap and 250 sq ft of cooling, self contained, did not look at lowes

500 CFM 3-Speed Portable Evaporative Cooler for 250 sq. ft. (with Motor)-EC302 at The Home Depot

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post #5 of 26 (permalink) Old 08-10-2012, 10:36 AM
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Yes, the correct name is Evaporative Cooler and one problem with the Portable Evaporative Cooler is they are often used in a space with the windows closed and as they operate the humidity percent increases and the unit becomes , well , not so Evaporative with the air becoming more saturated and uncomfortable in many instances.

If one or two of the portables were to be installed in window openings for outdoor air intake then they may very well work in the Phoenix climate.
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post #6 of 26 (permalink) Old 08-10-2012, 11:31 AM
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I live in Texas and yesterday was 108*. I just bought a 110V, 13k BTU portable AC/heater/dehumidifier combo unit for around $500 for my 400 sq. ft. shop/garage. I looked at the split minis but I could have, literally, built a new shop for what those things cost (around $4K installed). I have only had it for about a week, but it seems to make a huge difference. The key is insulation. I also added extra insulation to the attic over the garage as well as putting weather stripping around the garage doors. All of this will pretty much seal off your shop, so you will need some kind of air filtration to keep the dangerous sawdust down as well as circulating the air. As I said it was 108* yesterday and the shop was a "comfortable?" 85 to 90*.
Edited: I should have said that the shop was 85 to 90 without the AC unit being turned on due to the insulation and weather stripping. That is a significant amount compared to outside temp.

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City where the west begins.

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post #7 of 26 (permalink) Old 08-10-2012, 12:11 PM
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"...and the shop was a "comfortable?" 85 to 90*."
George; look into raising the Albedo effect of your roof colour. You can achieve a significant drop in interior temperature.
http://whiteroofproject.org/wp-conte...an-climate.pdf
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post #8 of 26 (permalink) Old 08-10-2012, 01:16 PM
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Originally Posted by joevm View Post
I live in Phoenix, AZ. Summers get real hot (100+). Would welcome any ideas on how to cool down my garage/workshop so that I can get some work done in the summer months. Central airconditioning is not an option.
I live in Northwest Phoenix and I understand your pain. Evaporative coolers would not work too well in the summer months as our humidity is up. I had the same problem as you and got a Koolfront air conditioner, which is on wheels and vents through a four inch hose which you put out your window. You will also need an air filter to remove all of the sawdust that will fly around. If you do not get an air filtration system, the air conditioning coils will quickly get plugged up. I got an air filtration system that hangs from the ceiling so it does not take up any of my limited floor space.
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post #9 of 26 (permalink) Old 08-10-2012, 02:31 PM
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"...and the shop was a "comfortable?" 85 to 90*."
George; look into raising the Albedo effect of your roof colour. You can achieve a significant drop in interior temperature.
http://whiteroofproject.org/wp-conte...an-climate.pdf
I'm also thinking insulation. Most people don't think about needing much insulation in a desert region... but it also helps to keep "hot" out and "cold" in.

From and my parents still live in Eastern Washington, a little thought of desert region, where temps are not uncommon to get above 120 degrees. I can still remember putting insulation in a building when it was 128 degrees outside (never measured it inside). Not a real pleasure when you're sweating and all those loose insulation fibers stick to you. ::scratch::scratch::

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post #10 of 26 (permalink) Old 08-10-2012, 02:55 PM
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I'm also thinking insulation. Most people don't think about needing much insulation in a desert region... but it also helps to keep "hot" out and "cold" in.

From and my parents still live in Eastern Washington, a little thought of desert region, where temps are not uncommon to get above 120 degrees. I can still remember putting insulation in a building when it was 128 degrees outside (never measured it inside). Not a real pleasure when you're sweating and all those loose insulation fibers stick to you. ::scratch::scratch::
I'm so glad I'm retired and not having to do that anymore! Makes my skin itch just thinking about it.
The worst part is taking old insulation out, full of rodent droppings and urine, not to mention the odd mummified rodent corpse.
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