HVAC Quick Reference Cards for Refrigerant Charging and Troubleshooting - AC Service Tech

These three HVAC quick reference polystyrene cards are double sided and designed to be used with Air Conditioners and Heat Pumps to measure the refrigerant level in a unit, charge refrigerant, troubleshoot refrigerant based problems, and measure heat transfer to determine if there is a problem. A Great Team Tool!! CLICK HERE FOR MORE INFORMATION