In this HVAC Training Video, I Show 10 Different Hose and Vacuum Pump Setups to Dehydrate New Refrigerant Tubing Before Charging! Vacuum and Standing Vacuum Tests are Performed on Air Conditioners and ...

Atmospheric air will enter a refrigeration system any time it is opened for service or any time a new system is being assembled. Atmospheric air contains nitrogen, oxygen, and water vapor, all of ...

Single-stage and multi-stage vacuum pumps have been around for quite some time, but some designers and engineers remain unsure about when to use one versus the other. For example, which pump is best ...