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Air Compressor Placement?? and recommendations

grabeb

Well-known member
Joined
May 28, 2021
Messages
205
I'm trying to figure out where to place an air compressor in my newly built shop. I'll add that I haven't purchased one yet, so I'm pretty flexible on style/size, but I'll post my desires/uses are and maybe I can get feedback on that as well. The shop is a 26'w x 32'd with 12' sidewalls and then 26' of the depth is vaulted due to my 4 post lift. I currently have an old 20?gallon craftsman single stage 110v compressor that is on it's last legs. I also have other various smaller ones, like pancake, hotdog, etc. I work on my own cars and to be honest the old craftsman has served me well over the years, but it can't keep up with larger tasks which I occasionally tackle. DA work, any sandblasting and running a spray gun are what I've noticed. I don't do those often, but I do have a 1960 C10 Suburban, which I need to do some sheet metal work on and will likely some day have it painted. I doubt I'll lay the paint, but I'll likely do the primer and such if I decide to pull it out of patina stage. I also have plans for a rat rod out of an old mail jeep, otherwise it'll just be typical woodworking, airing up tires, etc. I guess impact gun I had to wait, but I've been using dewalt battery unit lately, so not much need there I guess.

I have been thinking I'd get an upright 60gallon Upright 2stage 220v unit, but my Father-In-Law says he has a 220v horizontal unit I can have. I have briefly laid eyes on it, but it was a bit buried in a shed. I'd say it is probably 30-40 gallon unit. Don't believe it was 2 stage as I didn't get a great look and I think it can be wired 110v or 220v. I know that's not a lot, but it's been in there for years and was behind lots of stuff which is why I don't have it yet.

I'm guessing the 2 stage isn't a deal breaker if I go with the freebie, but if I buy new, that's what I'm leaning towards because I think I need it. :rolleyes: Maybe with a larger tank I'd get by with whatever as it's really just hobby stuff.

Now comes the fun part where do I put this? I really don't want to take up floor space as the lift already does enough of that. Then once I get workbenches, tool boxes, cars, toys, etc....floor space is a precious commodity. I have a loft above the overhead door. I'll try to link 2 pics of this space and I put a Blue X where I'm considering putting a compressor if I go up there, but I wonder if that is a bad idea or a great idea? It seems those large 2 stage uprights are about 400-500lbs so getting it up there will be interesting but alas I have the lift. Bad part is lift only goes up to about 7-8' to top of ramp. It's about 11' to the floor of the loft. So, I'd have to get creative getting it from lift to loft. The bottom chords on the attic trusses are 2x10s spaced 2' on center and I have 3/4" OSB down for the floor up there. Would that support a compressor? If I go vertical I'd have to place towards the center of the loft, which has about 7'-8' of headroom. The knee wall part is about 4' and if I go horizontal compressor that's where I'd likely go. Any thoughts on this? Should I beef up the floor?

If I don't go up there, my next thought is to build a bump out off the garage outside where I had a concrete slab poured in the 3' space between my building and the neighboring fence. I could build a compressor building, but I worry about needing to vent it, keep it cool in 110*+ summer days and warm on -10*+ winter days. Yes, we get that much of temp swings. Outside in it's own enclosure is enticing as it'd be much quieter for me and I wouldn't have to go 11' up in the air with a 500lb compressor.

To get air to the garage the plan is likely to use black pipe (unless galvanized is fine), I've even considered pex or copper. Not sure the pex is really rated for that and it'll be exposed and don't want to really look at pex....needs to look presentable. I then plan to wrap the pipe around the perimeter of the garage and have risers or drop downs (depending where compressor is located) to feed various spots in the garage.
 

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Etchase

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Nov 10, 2017
Messages
2,024
Location
Hawaii
The noise drives me crazy. Outside gets my vote. Saves on the AC bill too. I think they have a pretty wide operating temperature range.
 
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grabeb

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Joined
May 28, 2021
Messages
205
Noise drives me crazy as well, hence way up high or outside!

So far, garage isn't cooled, hoping that changes. It's one of my "I'll figure that out at some point!" items!!

I think they have pretty large swing as well, but what I read is about 40-95 degrees. That said, I've never had an issue with a compressor. I think in winter the ice would be the biggest thing if I allowed water to build up in the tank. I suppose I could insulate the outdoor structure, monitor the temps and maybe a heat bulb or just a 100watt bulb to keep it somewhat warm or some heat tape wrapped around the bottom of the tank if too cold and need to use it?

In the summer just keep it vented and maybe I could add a small ventilation fan that kicks on if too warm to circulate the air?

Maybe that's overthinking as well.
 

Moldyjim

Well-known member
Joined
Aug 1, 2021
Messages
188
Check the free one thoroughly for rust, if it's been sitting for a while with water inside it could burst. Another reason for it to be outside your shop.

If I had my way I'd mount it outdoors in an insulated shed, with either an automatic drain or one that's super easy to access. Drain well and often.

The insulation will help keep it warm but mostly to cut the noise. You still need to have fresh air flow into the shed to keep it from overheating in the summer. Movable shutters would be sweet.
 
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crguy

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Joined
Jan 24, 2016
Messages
2,659
Location
SW Washington
Sand or bead blasting takes a lot of air. I put my latest compressor in a mostly enclosed storage area outside against the back wall of the shop. You can barely hear it run.
 

GeoBruin

Well-known member
Joined
May 5, 2018
Messages
3,750
I have a much smaller shop than you but I had to get mine out. Noise, heat, and the space it took up were killing me.

I used a passive inlet vent right next to the flywheel and a soffit vent under the "eaves" but it was still getting warm with the acoustic insulation inside, so I added a solar vent (which doubles as another passive vent at night) near the highest point and it really takes care of the heat.
 

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