HVAC professionals across the country are experiencing a recent change that is driven by energy codes. This change is related to duct-leakage testing on new and often retrofitted HVAC systems. A lot ...

Combustion issues can be a service technician’s most challenging and intimidating problem to diagnose. Unless you’re equipped with the proper skills to tackle these issues, it’s easy to become ...

Fiberglass insulation is not airtight. Heck, it will barely even slow air propelled by convection, differential pressure or wind. It is especially helpless against air moving through a leaky pipe ...

A small-duct high-velocity system was used in this Johns Island, SC house. The ducts vents can hardly be seen. The house was designed by Architect Sam Rashkin. Energy Star estimates that 20% to 30% of ...