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An AC that doesnt require hose or hole in wall?

Big Daddy Chop Shop

Well-known member
Joined
Jan 13, 2016
Messages
233
Location
Hope, Indiana
There are a ton of really smart guys on here, but apparently more folks who'd rather poke fun, sorry OP. Just to give a bit of background, almost 20 year guy with one of the "Big Three" manufacturers of HVAC equipment in the US, I will try to help.

As has been stated, cooling does not really cool, in fact, it just removes heat from the space and deposits it elsewhere (usually outside). I have actually seen Condensing units (the unit that normally sits outside your home) placed in attic spaces. I do not recommend this. The temperatures are usually already very high, and in most places in the US, attics, on average, are under vented.

For either a mini-split or a conventional A/C, the hole in the wall will be no more than 3" in diameter. Properly done, it is not an issue.

The portable coolers have been mentioned, and can be an option. Most folks would vent to the attic, so again, you must have proper ventilation, and there are still concerns. Usually the incoming air to the condenser coil is from the space, so a negative pressure will be created. The other option is a 2 pipe system, and venting out the wall, but again, a much larger hole than just the line set hold for a mini-split or conventional A/C.

I might actually suggest, depending on usage, adding a window and putting in a window A/C. You get the ease of install, low price, and a window! Just a thought.

Hope you find a solution that works for you, not everyone can think of everything all the time. I apologize for the way folks have poked at you. Not knowing is not a problem, in my opinion. No one knows it all.
 
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PugetDude

ALLIANCE MEMBER
Joined
Mar 13, 2013
Messages
22,642
Location
Superstition Mountains, AZ
If you don't beleive me go to carlsbad caverns in the summertime in texas, last time I was there I had to wear a coat inside the cavern, it was stinking cold.

Last time I checked, Carlsbad Caverns was in New Mexico.
Ambient cavern temperature is 56F; it probably just felt stinking cold because it was 100F outside...
 
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jimmiller2

Active member
Joined
Oct 29, 2009
Messages
41
Location
Tennessee
I am starting a well insulated garage next week. Decided to frame in for a motel type heat pump 16 by 42. You can buy these units much cheaper than a mini split. There are many ways to fill the hole if the need ever arises. I can't understand the OP problem with a hole in his garage. Maybe after working in a sauna environment for a few weeks a hole might not seem so bad.
 

Voi

Well-known member
Joined
Oct 10, 2010
Messages
5,153
Location
Western South Dakota
Decided to frame in for a motel type heat pump 16 by 42.

Jim how large are the sleeve openings for the PTAC units? On a glitchy internet connection right now and can't look it up.

[EDIT] Never mind. Evidently the opening is actually 16x42. I thought that was just the dimension of the inside unit.
 
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