David Callender is a NATE-certified technician with more than 30 years of service experience in commercial HVACR. He is a Certificate Member Specialist of RSES and is a technical support supervisor for ICOR International. For more information, go to www.icorinternational.com.
Whether we like it or not, R-22 is going away, and technicians need to look at their best options and solutions to work with the phaseout. One option available to all competent service technicians is to recover and recycle refrigerant.
Independent testing on three different types of residential equipment has shown a 15-26 percent increase in efficiency just by replacing the fixed-orifice-metering device with a new TXV valve. No other work was done to this equipment to increase the EER.