A new duct sizing calculator from ASHRAE and the Air Distribution Institute (ADI) allows HVAC air distribution system designers to more accurately size ducts, especially flex ducts under varying ...

The air duct calculator, or “ductulator,” is a commonly used tool for designing and installing duct systems. Unfortunately, many designers and technicians receive limited instructions on its correct ...

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 ...