ALLENTOWN, PA – December 01, 2025 – PRESSADVANTAGE – PJ MAC HVAC Air Duct Cleaning announced an enhancement to its furnace ...

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 ...