Your compressor that has a 6-20P plug that requires a 20 ampere circuit at. 250 (240) volts and an equipement grounding conductor. Remove the dryer. receptacle and replace it with a 6-20R receptacle. You should find the. unused grounding conductor in the box where the dryer receptacle was. Use. If you plug a 220v air conditioner into a 110v socket, at least the fuse will be blown. You may also damage the air conditioner , or worse, cause an electrical fire. Yes, you can immediately hire an HVAC technician or a licensed electrician to convert a 110v socket to a 220v socket.