Air Compressors Plus carriers replacement motors for all of the Castair series compressors as well as other brands. If the time comes that you need to replace your motor, give us a call so we can help you choose the right motor for you. We carry both single and three phase power motors from 2 - 30 hp. If you need a motor you do not see below, give us a call for a price quote and availability. It's our goal to have you back up and running as soon as possible.