ACCA has announced the launch of its newest online certificate training program, Qtech: Duct Design Basics. Through Qtech, contractors can offer their employees on-demand training in quality HVAC ...

With duct work, it all starts with some basic calculations. To heat or cool a space, each room brings with it a certain cubic-feet-per-minute (CFM) air-flow requirement. Knowing the CFM for a room ...

The fourth edition of HVAC Systems Duct Design presents the basic methods and procedures required to design HVAC air distribution systems. This manual provides the HVAC system designer detailed ...