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Old 07-12-2019, 08:19 AM
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Originally Posted by America's Patriot View Post
Most likely, none of the walls are insulated... garage is considered exterior and it's a corner that most builders cut.


After you insulate, get you a floor unit. They range in price from about $400 bucks to a few thousand. You run a hose outside to drain off the water. Another option (which I prefer) are the wall mount units. They are very effective and cost about $700 bucks (for the size you'll need depending on humidity levels). I use these in my network rooms at work and for the server room I've setup in a closet at home. You run the drain line through the wall to outside.
Do you have a link to the $400 floor unit?
Is it different than the portable I linked above? Perhaps it gets away from the negative pressure issue he raised?
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Old 07-12-2019, 08:44 AM
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If you're just gonna be in their occasionally then probably a portable A/C unit and some fans. If you're gonna be in there several times a week for extended periods of time then I would insulate the ceiling and exterior walls (if they are not CBS construction) ie concrete block construction, cut an opening in a exterior wall and install a large enough window air conditioner unit to cool to a tolerable level.

Note: The above is likely the least expensive way to make the temperature tolerable without going through a major expense or re-engineering of the space...
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Old 07-12-2019, 06:34 PM
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I had the same problem and was determined to be able to be able to be comfortable in my garage year round. My garage is pretty small. Roughly 22x15. I insulated the walls. I still need to insulate the ceiling. I installed 2 ceilings fans. Updated the garage door to an insulated door. Cut a hole in one wall the size of a 10,000 btu window air conditioner and installed one. I set the A/C for 75 degrees. Currently we are in the 90s here and my garage is 75 degrees. The setup works really well.
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Old 07-13-2019, 07:03 AM
wldwsel wldwsel is offline
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I favor the big orange fan solution that Justme11 spoke of. Especially during May Fly season here in the south. I'd love to hear those blood sucking bugs (are they Dems?) yelling for mercy!

WW

Shoot straight - stay safe
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Old 07-13-2019, 10:27 AM
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I was installing my winch bumper on the 4Runner with garage door open sweating my ass off when I thought to myself... WTH am I doing. Closed the door, turned on the AC, and brought out a fan.

I have one of those Haier 8000btu portable AC units in my garage that vents via a duct through a side window. It drops the temperature in the garage 10 degees. From 90 to 80. It's too small for my 3 car attached garage but definitely helps.

Only problem then is I need more lighting. Need to find an old work light at a garage sale.
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Old 07-13-2019, 10:59 AM
ozsurvivalist ozsurvivalist is offline
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I would prefer a wall unit as the garage is small.

I know the mini-split units do not exhaust inside air out. How about the wall units? I know these portable ones do, they create negative pressure in the room and suck in hot air from outside, not very efficient...
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Old 07-13-2019, 11:03 AM
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The walls are concrete, would you recommend cutting a hole for a window A/C unit?
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Old 07-13-2019, 11:04 AM
Revmgt Revmgt is offline
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Quote:
Originally Posted by John_Auberry View Post
Those diy mini splits a simple to install.
Agree. You can buy one, install it yourself, then get an a/c guy to come out and charge it for you
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Old 07-13-2019, 11:27 AM
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Quote:
Originally Posted by ozsurvivalist View Post
The walls are concrete, would you recommend cutting a hole for a window A/C unit?
Well, you know the options now.
1) Make a big hole for a window A/C. A bit better efficiency, doesn't take floor space.

2/ Make a little hole 6 inch dia approx. for a portable unit.

3. Just get a big fan.
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Old 07-13-2019, 03:50 PM
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Quote:
Originally Posted by Justme11 View Post
https://www.homedepot.com/p/BLACK-DE...10WT/301053291



Run the heat exhaust hose outside somehow.
I used a unit like your example in my previous home. I ran the exhaust into the attic. The exhaust air was dry, so no moisture issues.... Insulating the west facing garage door with foam panels, adding insulation over the garage attic and using the portable AC unit made the garage reasonably comfortable during Florida summers.
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Old 07-13-2019, 04:24 PM
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Quote:
Originally Posted by lb0190 View Post
I used a unit like your example in my previous home. I ran the exhaust into the attic. The exhaust air was dry, so no moisture issues.... Insulating the west facing garage door with foam panels, adding insulation over the garage attic and using the portable AC unit made the garage reasonably comfortable during Florida summers.
The one I have discharges the condensate through the exhaust (I guess by evaporation?) Not sure. I only used it a few times on the boat.
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Old 07-13-2019, 05:02 PM
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Quote:
Originally Posted by ozsurvivalist View Post
The walls are concrete, would you recommend cutting a hole for a window A/C unit?
Yep, get ya a concrete blade for a circular saw and cut an opening for a window unit...

Several YouTube videos showing how to install a window unit in block wall...

https://www.youtube.com/results?sear...+in+block+wall
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Old 07-13-2019, 05:07 PM
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Quote:
Originally Posted by Justme11 View Post
Nice thing about the big orange fan, if you have mosquitoes, a screen applied to the back will trap them pinned to the screen. You can listen to their cries for help as you work.
I went with a DIY mesh bag attached to the exit side of the fan. You can see it fill up with leetle boogers who desiccate over time. Great for gnats, too.
Made a bag for the shop fan and the upstairs fan.
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Old 07-13-2019, 07:08 PM
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one of the best tings I ever did in my 30x24 shop was 2ft of blown insulation in the ceiling.

you could really tell the diff in the summer. still sweaty tho in higher temps. a med sized window air con would make it very comfy just as it does my house. all my stuff is built with 2x6 walls tho.
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Old 07-13-2019, 07:19 PM
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Quote:
Originally Posted by Justme11 View Post
The one I have discharges the condensate through the exhaust (I guess by evaporation?) Not sure. I only used it a few times on the boat.
The unit I had, evacuated the condensation to a collection pan, with the ability to run a drain hose, so I felt safe to run the exhaust into the attic.
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Old 07-13-2019, 08:40 PM
John Galt 1 John Galt 1 is offline
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$5000 for an installed 12,000 btu mini-split is robbery.

I installed my own 2 head 18,000 btu mini-split in my house, it's not that hard. But for a 400 sq/ft garage a 12,000 btu split is plenty and it can also heat the garage in the winter. A decent quality LG unit comes precharged with R-410A and with the copper lines costs $1100.
https://www.ecomfort.com/LG-LS120HEV2/p99293.html

If the 240v wiring is a problem for you check out these 120v models.
https://www.ecomfort.com/cooling/110...ni-splits.html
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Old 07-14-2019, 07:04 AM
ozsurvivalist ozsurvivalist is offline
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Nice, thanks guys for all the options and for sharing your experience!
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