“Air Before Charge” PLUS! We will cover the two necessary steps to properly commission a running system. And we will see how these two variables affect the refrigeration cycle. Techniques for airflow evaluation will be reviewed along with interpreting blower performance charts. This seminar will also cover how airflow affects the overall system, airflow measurement methods, common mistakes made during repairs, proper startup, and service methods.  Then, once the air side is confirmed, establishing the correct charge will be covered. Superheat, subcooling target acquisition, and charge evaluation will finish with demonstrations on working equipment and testing devices.

Date: TUESDAY, MARCH 31, 2026
Time: 3:00 pm - 7:00 pm
Credits: 4 Continuing Education Credits
Cost: Member $118 Non-Member $148 SRP Trade Ally $108
Instructor: Bob Cone, Stevens Equipment and NATE Proctor
QUALIFIES FOR: SRP/MTCAZ MASTER HVACR RESIDENTIAL CERTIFICATE PROGRAM; APS REBATE PROGRAM; NATE CEH