i am aware of slient air compressors..i got one of the best..had it for 35 years.it came off a swer system..works like a top..all i had to do was add regulator and water trap...purrs like a kitten..lol..
pro..tank is quite..con..it has to be filed....air compressor can be loud depending on make and brand u get..shop around...my self i rather the CO2 tank..but i do have a backup..the old trusty air compressor..