There is a plague spreading through the automotive industry. I’m not talking about the current glut of crossovers swamping the market, the rush to make pickup trucks as bougie as possible, or even the ...

For the past 50 years, engineers have been “designing” duct systems. Quite often, they were not actually designing the systems, but were sizing duct the duct according to some rule of thumb. The rules ...

Before selecting duct materials, it helps to understand how air flows from your heating/cooling unit through the duct network. Most systems use either a hot air furnace or an air conditioner ...

PAY ATTENTION: Flexible duct must be properly installed to perform as intended. Attention to detail will make or break the duct system. July 2, 2018 In order to understand the foundational principles ...

Duct routing looks simple on drawings, but once construction starts, it becomes one of the most challenging coordination tasks in a building project. Engineers design ducts for performance, ...

ALLENTOWN, PA - January 12, 2026 - PRESSADVANTAGE - PJ MAC HVAC Air Duct Cleaning announced the launch of a new ...