Garage/Workshop Cooling - Page 3 - Router Forums
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post #21 of 26 (permalink) Old 08-17-2012, 06:40 PM
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I think my garage (shop) fits in with what a lot of you guys have. It is a one car garage about 13 x 25 with lots of stuff in it besides my woodworking tools.

I have opted for a split system air conditioner. The reason is simply the home owners assoc. wouldn't tolerate a window unit stuck through the outside wall. Period.

Two years ago we had the original siding on our house replaced with Hardi plank. while the siding was off, I asked the contractor to insulate the garage wall. Good move on my part. :-) Then I had my garage door replaced with an insulated energy efficient door.

Fast forward to this week. I bought a Fedders 12K unit w/heat pump from Heat and Cool dot com...$845 delivered. I hired an electrician to do some elect work around the house and part of it was to run power to the condenser (located behind the privacy fence) and to the inside unit. The required running conduit along the soffit and into the wall where he installed a receptacle. Tomorrow, my son, the HVAC guy, will be here to run the refrigeration lines and charge it all up. Hope to be a lot cooler in the shop than the 100 deg F today.

I bought the plastic shroud like that pictured in the porch conversion from a local refrigeration outfit (United Refrigeration). It is Plastiduct and can be bought over the internet, but since I bought local, it was half price of the online prices. It is paintable so I will be painting it to match the house and thus fade away and not be an eyesore. The shroud covers the lineset thus hiding it from prying eyes.

Costs do add up. Monday a company will be here to insulate the garage and the bedroom/bath adjacent to it. $600 for R38 blown in insulation.

Yippeee! Hard to stay calm after having temps in the garage as high as 102 at times. Tough on an old retired guy like me.

Why did I spend so much? Well, I have retired as a pro sports photographer, and selling just one lens (Canon 300 f/2.8) netted me $3500 so some of that is going into the house to make things more comfortable. Selling another lens was more than enough to buy a new Grizzly 14 inch band saw. :-)
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post #22 of 26 (permalink) Old 08-18-2012, 12:17 PM
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New member and good place to say hello. I live near Texas coast and it does get hot.
First of the summer I converted an attached garage, about 400sq ft , into a "play" room
for my drums. Insulated the inside of the garage doors and installed a window unit for ac
and heat. Frigidaire 18,500 ac and 16,ooo heat, bought from amazon for about $600,00
Works great. I admit I did have one window so installation was easy, also wired 220 for
an outlet directly under unit. Would do it again. Maybe an option for ya.
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post #23 of 26 (permalink) Old 07-18-2019, 11:47 AM
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I have exactly the same issue here in AL.

Was thinking along the lines of something like this:
https://www.theairgeeks.com/best-gar...r-conditioner/ (the Black & Decker one here https://www.blackanddecker.com/produ...trol/bpact14wt). I also like Frigidaire and their 14k BTU one.

Would that work you think?
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post #24 of 26 (permalink) Old 07-18-2019, 12:04 PM
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While the previous posts on this thread are about 7 years old, this is a good thread!

NicoT: I'm in the Houston, TX area -- temps and humidity run about equal (90/90). In my 400ish s.f. uninsulated, drafty garage I put a 24000 btu wall unit in, which can cool the space fairly well to the mid- to upper-70s. I have a small heater that I use for the "winter" months if needed. Usually I just put on a heavy shirt. :-)

Ive just embarked on a project which will include insulating the space which should help a LOT. Eventually, if the universe chooses to smile upon me, I will put in a 2+ ton split unit to replace the wall unit -- while not a priority, it would solve a few problems.

I bought my 24k unit at Sam's club for about $400. I paid someone a couple hours labor and a few beers to put it in the wall for me. Wiring was easy -- I overtook a circuit that fed the (previously filled in) pool pumps.

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post #25 of 26 (permalink) Old 07-18-2019, 12:29 PM
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Old but good string. I had an evaporative cooler for some time in my 12x24 shop/shed. Later swapped it for a 6K AC window unit that goes through the outside wall. But I also have a lot of insulation in place in the ceiling and walls. What has really helped a lot is laying in a layer of radiant barrier (aluminized bubble wrap), then the insulaiton. When we insulated the garage, we measured the heat difference between the uninsulated roof and the spot next to it with the radiant barrier. The covered roof was 35 degrees lower. Good stuff, have it in the garage door too.

With all the insulation, about R20 in the walls, a ceramic heater holds the temp nicely, but it takes two heaters to bring the temp up.

If I had it to do over again in my 2x4 walls, I'd have added 2x2s on the studs so I could have put R30+ in the walls. In other words, I come down on the insulate like mad and use a decent sized AC. You could probably find a used AC unit if you searched a bit.

BTW, I live in the high, dry desert, and didn't have much rust problem, but then I also use boeshield rust inhibitor on all my cast iron. With the AC, I don't have to concern myself with condensation.

The more I do, the less I accomplish.
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post #26 of 26 (permalink) Old 07-18-2019, 03:46 PM
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I am now on my second mini split AC/heat. The old one developed a small Freon leak in the evaporator. This go around, I installed a MRCool DIY 12K model. did it all by myself with a little help from my son, who is in his mid 40's. No HVAC guy needed, or electrical because the electrical was already there.

As you can see from the screenshot of my home automation program, the outside temp is 91.7F, and it is 79.5 in the shop. The unit is running cooling the shop back down. We have just unloaded the groceries, so the temp went up some while the garage door was open. Yep, fully insulated walls and ceiling.
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