Better than I hoped for.

Barry

Paint Fanatic
Staff member
Finally bit the bullet and bought a screw compressor, in the breezeway between the shipping and manufacturing bld we have 2 Ingersol 7.5hp each running a different system with 80-gallon tanks.
The problem is we have six desks and phones inside the opposite wall that you see a new compressor and when they fire up hard to hear on the phone.
This new one makes less noise than a normal conversation.
So next the plumber is coming it to combine the two systems and all will be run off new system no easy task as will take 100 feet or so of pipe.
 

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I used to be production manager for a fairly large shop making high performance Toyota parts, they ended up buying a monster screw compressor and it too was amazingly quiet even with enough power and output to handle all the needs of the shop. Not cheap though!
 
We have a few screw type compressors at work, one set just aerates water and another set runs some big diaphragm pumps. I think there going on 12 years with not much more than regular maintenance.

Like you said they are great sound wise. You dont get the hammering like you get with a piston compressor, just a nice even noise.
 
Currently have an Elgi 7.5 hp plumbed into a 120 gal. tank that I got when my 10 hp Compair Hydrovane was getting rebuilt. I wish I could say I was happy with it, but have had problems with the control panel and overheating to the point of shutting itself down. It also has trouble keeping up with 2 old guys whereas the Hydrovane ran my old shop with 4-8 people using air all the time. Mine is setup to turn on at 105psi and off at 125psi, and was told not to run it any higher. Hope you have better luck with yours, Barry. They are quiet, though:)
 
man i have been around quite a few different brands and sizes of screw compressors and they have all been crazy loud. they were much older units so i suspect the newer ones have been designed to be much more quiet. we had an old sullair where i used to work and it was in a small shed like building. with it on you couldnt go in the building without earplugs.
 
The Elgi I have is relatively quiet because of the 1 inch foam lined enclosure it is in, but take one of the sides off and the high pitched scream is not pleasant.
 
The Elgi I have is relatively quiet because of the 1 inch foam lined enclosure it is in, but take one of the sides off, and the high pitched scream is not pleasant.

This is a 7.5 with 60-gallon tank, and the reason I bought was the warranty was three times longer than the hertz or the keszor-(spelling) and made to order in South Carolina.
This thing was so quiet yesterday I stood right next to it when on cell phone with it running, cannot do with the other compressor.
Friday, the plumber is going to combine both air systems so the 2nd IR compressor will be shut off and left for back up only.
 
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