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Topic Review (Newest First)
03-03-2012 06:55 AM
ethn_bert I have my air compressor in the attic. I ran a drain line down through the ceiling so I can drain the water from the tank. In the winter when it is very cold and when I first start it the compressor stays running and the safety valve will release. I believe this is from moisture freezing the pressure cutout switch. I have since put electric heat tape on the pipe to the pressure switch. I have no trouble with it now, but it is 50 degrees here. In the summer I get crazy amounts of water since my garage is air conditioned. I just put a good trap before every hose reel and have to drain them a lot. The pita part is the service of the unit. In the winter it is freezing and miserable. In the summer it is so hot I wait until nightime to service the compressor.

That being said I love the compressor in the attic. The noise level is low and it is actually louder outside my garage than inside since I have an insulated ceiling. My compressor is 220 and I have a dedicated 10 gauge circuit for it. I have a glowing light switch when it is on to indicate the compressor is energized. I put this switch up high out of little kids reach. The reels are also right at the ceiling(8ft).

I used 3/4 plywood over the 7/16 plywood on the floor of my attic when I mounted the compressor. I also used very large washers under the mounting pads when I bolted the compressor down. I used liquid nail and a lot of screws in the 3/4 plywood. I made sure to hit the trusses when screwed it all down. I used lug mounts similar to what we use when mounting car lifts for the compressor mount. I predrilled the truss and set the bolts. The pita part was lifting the compressor over the studs and down onto them. This will be a pain if I ever have to remove the tank. I didn't use the lag bolts for fear of splitting the 2x4 truss.

I mounted my compressor at the very end of the garage with the fan and cooler facing the vent in the peak of my garage. I did this for the best fresh air intake, but this makes belt changes a pita since I reach over the compressor; the belt guard is between the wall and compressor. Last bit of advice. Get a very good air filter!

Good Luck.
03-03-2012 12:29 AM
RichardRonnie I have seen various compressors that are installed in attic. The problem is only that, it really gets cold in the winter and hot in the summer.
02-21-2012 08:22 AM
boothboy One of the problems of installing a compressor in a extremely cold spot is the viscosity of the compressor oil increases. It can be very hard on motor, the electrical wiring to the compressor and the breaker in the service box. When the compressor is hard to turn over everything else gets very hot. Tripping breakers is never good. If it gets very cold where you put your compressor your going to have to get some heat around it.
02-20-2012 09:47 PM
MarkhamCornoit I have a high pressure air conditioner and it was mounted in a space in the attic.The problem I have is the vibration it creates in the ceiling below. Unless your air compressor is very very smooth running all of that vibration is going to be transfered to your ceiling. Possibly after a few days of running, your place will be covered with all the dust that was clinging to the ceiling.
02-17-2012 06:49 PM
S10 Racer I would think that in the summer when the attic is well over 100+ degrees and if your air lines are in the garage where the air will be cooler, you might experience extreme condensation when the hot air hits the cooler air below. JMHO
02-13-2012 11:36 AM
ogre i have mine in an unheated part of my barn with no problems.
however... i'd think that having it overhead would make it louder, transmitting the noise down.
i'd rather have it on concrete. my compressor room is under my stairs with a simple plywood door.
very quiet.

also the hotter your compressor gets/stays the less effective it will be at dropping moisture in the tank.
02-13-2012 08:04 AM
OneMoreTime compressor lives in a unheated garage and I have seen a number of compressors installed in attics or overhead over the years so i would expect no issues with installing it that way..

02-13-2012 06:33 AM
Compressor in the Attic??

I would like to locate my air compressor in the "attic" of my shop. This space is unfinished and not heated. It will freeze in the winter and get quit warm in the summers. Am i asking for troubles? the space is large enough to stand up and walk, etc, so service is not an issue - i want it up there so that noise is minimized and space. I'm just concerned, primarily about the possible freezing temps and if that will be hard on the compressor. the compressor is a 4-cyl. quincy. Thanks for the thoughts.

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