Problems Vacuum Pumping Refrigerant Lines to the 500 Micron Level for HVAC

Teaching HVAC ELECTRICAL Wiring, Components, Troubleshooting to Students using a Training Board!

HVAC Training Basics for New Techs: Gauges, Pressures, Temps, Check the Charge!

LOW REFRIGERANT CHARGE on A/C Unit! How to Verify with Gauges!

HVAC 1st Year Apprenticeship Class, How an AC Works, Refrigeration Cycle w Bryan Orr- HVAC School

Testing if an HVACR Compressor is Shorted to Ground, Open, or Overload Tripped!