I just finished closing my pool for the 1st time using an Air Supply Cyclone Liner Vac 3HP 120V 3-Stage, instead of my 26 gallon Craftsmen compressor. The Cyclone was well worth the purchase. Instead of doing "tank dumps" and having to wait each time for the compressor tank to refill, I had all the air I needed...continuous at the flip of a switch. The real test was blowing out the main drain. The bubble column the Cyclone created in the deep end was WAY more intense than using the compressor. If you are thinking about buying one for closing I highly recommend it.