California Air Tools CAT-4610S Ultra Quiet & Oil-Free 1.0 hp 4.6 gallon Steel Twin Tank Electric Portable Air Compressor, Silver

We bought this compressor to replace a truly super quiet AMS compressor that is not oil free and pumped a lot of oil. I suspect we burned a seal in the AMS from the get-go because it didnt have enough capacity to close an automatic drain valve on a piece of equipment and ran for hours when it only has a 15 minute on 15 minute off duty cycle - it was so quiet we didnt hear it running in our back dungeon room where we kept the typical cheap compressors to reduce the deafening noise. I dont want to trash the AMS, it is a very nice unit but can have this problem. While not as incredibly quiet as the AMS, this one is so much quieter than the usual cheap compressors that we can keep it in the work area without it being a distraction and doesnt need to be relegated to the back dungeon. It makes it easy to drain and track problems if it is cycling too often, and has enough more capacity that it will close the (small) auto drain valve at startup. We have only had it for 3 weeks, but so far works nicely.

For comparison, its about as quiet as an old fridge or a window AC unit. You can easily talk over it at a normal volume while its running. Its bigger and heavier for the same tank size than the Porter Cable pancake its replacing but that thing was so loud the tank would literally ring. Its definitely worth the money if you do a lot of work after the kids go to bed!

I am a home user and previously had a pancake compressor. I was embarrassed when I worked in my garage using the compressor because it was so noisy. I got my 4610AC yesterday and used it on a project today. I would hear it come on but then, it was so quiet, I would not notice when it stopped running. I like the push to connect quick connect fittings. I thought that I would have to change the connectors that came with the unit to push to connect and they were already there. The unit exudes quality.

Customer works from home. Bought this because my old air compressor is so noisy. This was exactly what I wanted. A quality air compressor that is quiet. I was able to talk with my customer standing by it. We couldn’t believe how quiet it is. Great job California Air Tools!

This compressor is awesome, when they said it was quiet I sort of said to myself, yea right, but when I flipped that switch, I was in awe, you can whisper and be heard with this compressor running, it is light weight and I love the very looks of it, definitely will be buying a bigger one when my garage is completed, would give this 10 stars if I could.

Decimal level is fantastic compared to normal air compressor. I’m able to meet with clients or talk on the phone and it doesn’t disrupt conversation. Performance of air compressor keeps up great with my air tools for upholstery.

We had another one (much bigger unit) that made huge LOUD noise. My husband bought this one for me. I like to blow off my lamp shadows and other things. By the way, hubby uses it to for the tires on the cars. Great price and GREAT item.

Super quiet, but thats why I bought it. Well packaged, it survived intact as I watched the UPS man roll it out the door of the truck (yes, he rolled the square box up the aisle and was end-over-ending it down the stairs when I told him to stop and I would take it from there). At roughly 45lbs, its not heavy, but still not light; however, definitely light enough to carry out of a truck. Would be nice to see an aluminum frame for even more weight savings. The on/off switch is not readable unless you have a clear angle as its black on black. I simply wrote on/off with a white marker to make identification quicker, especially in low light. Because of the small capacity it took some time to fine adjust the regulator to (110psi max) without going below. Once I found it, I marked the spot as a reference. I was easily able to adjust the low limit switch to 95psi (factory appeared to be ~85psi) to ensure my nailer didnt fall below minimum. Finally I dont get interrupted by the compressor, and the baby can still sleep when I work inside. For reference, I replaced a bostich pancake with this unit. I swear the bostich was louder than my 5hp shop compressor. This compressor is being used for nail guns only. You could fill tires and do the occasional blast of air, but capacity is lacking for any flowing air application.

I bought this air compressor 4 years ago. About 18 months the air compressor would fall on its face when letting air out the hose. I contacted support and they were very unhelpful. Simple things like asking me for purchase date and model number when I had included that in my original contact email. The warranty was for 12 months, so they wanted nothing to do with helping me out other than sending me a link to the parts page. Through some troubleshooting, I found the regulator to be faulty. I removed the regulator and the internal bits and found a lot of corrosion. I cleaned and lubricated the regulator pieces, but the output pressure was still stuck at ~20 PSI. Today, I had enough and took matters into my own hands. I removed the regulator and installed an brand regulator and mounted it on the compressor bracket. California Air Tools wanted $60 for the regulator, which is a ridiculous price for a part that failed so quickly. All is well now and I have the compressor back to working as intended. If California Air Tools reads this, I would suggest they use regulator internal parts that dont corrode so easily.

Perfect size unit with plenty of capacity, quick recovery and unlike the yellow one it replaced, it holds the air without leakage. Very quiet and I expect to get a lot of years of use from it.