It was an awkward conversation, bringing a technician nearly twice my age into my office for a talk. “I'm good at fixing units. I'm not some fancy-talking sales tech,” the technician half-mumbled as I sat looking at him. “The customer complained that you made them feel uncomfortable, you were unfriendly, and you tracked dirt in […]

In HVAC systems, liquid and vapor will exist at the same time and place. We call that condition saturation, or we say that the refrigerant is “at saturation.” Phase changes occur in the evaporator and condenser, so these are spots where liquid and vapor coexist while the system is running. Saturated conditions occur whenever liquid […]

This article is an updated version of another HVAC School article on oversized equipment. This edition is a joint effort by Genry Garcia of Comfort Dynamics, Inc. and Kaleb Saleeby. Both of them are regular contributors to HVAC School, and we are grateful for their contributions. Thanks, guys! The symptoms and consequences of oversized heating […]