ASHRAE and the Air Distribution Institute (ADI) have launched a new duct sizing calculator. According to ASHRAE, the calculator allows HVAC air distribution system designers to more accurately size ...

GET IT RIGHT: Duct fitting construction has a large influence on its equivalent length and which air duct calculator setting you choose. The fitting on the left has a much higher equivalent length due ...

Developers and owners of residential homes are generally keen on keeping heating and cooling costs as streamlined as possible without sacrificing performance. A properly sized system costs less to run ...

Heads up for the early adopters among you. Want to travel light when doing your duct sizing and other calculations in the field? Now it's possible thanks to some new iPhone applications that put a lot ...