It's no secret that air compressors can be quite loud, which is why the Fortress Ultra-Quiet ... McGraw's air compressor. If you don't need something heavy-duty, go with the Bauer 135 PSI cordless ...

Air compressors ... dryer stuck to your ear. Fortress also features some tiny machines, the quietest of which is the 1-Gallon 135 PSI Ultra Quiet. This small compressor isn't very powerful ...