I replaced the evaporator coil in a residential air conditioning unit. I evacuated the system to remove all the old refrigerant, and then I brought the system pressure down to 500 microns. I added 4 pounds of r32 refrigerant to the system and it is now running great. The pressures are looking good, and the temperatures are looking good. There are no issues with the system. I did not charge the customer for the service because it is under warranty and we installed the unit a month ago.
