Nate and Ace are replacing a 30,000-Btu cooling system. The new system is a 10 SEER. They have removed the refrigerant by following the refrigerant handling requirements of Section 608 of the Clean Air Act. Having completed the component installation, including a new condensing unit, properly sized refrigerant lines, and a matching cooling coil with a thermostatic expansion valve (TXV), they are preparing to charge the system. The design temperature of the home is 76 degrees F with a system charged with R-22.
NATE: “Tell me Ace, what charging method are we going to use on this equipment?”