The Technician's Guide equips practitioners with the knowledge to properly implement all of the measurement procedures required in the HVAC QI Specification. This Guide & Workbook is intended to ...

Q. This week: Is there any way to reline or replace metal heat ducts under a concrete slab floor without tearing up the floor? We had our ducts commercially cleaned five years ago, when we were having ...

Q. The heating ducts in our basement are exposed, and I know a lot of heat that I’d like to have upstairs is being lost moving through the ducts. The main duct is large and rectangular and runs almost ...

Out of sight, out of mind certainly applies to your home’s duct system. As long as warm air is coming out of the registers when you turn your furnace on, everything must be just fine with the system, ...

If your heating system is struggling, start by paying attention to patterns. One-time issues are often repairable, while repeated problems usually signal the need for broader service. Keep filters ...