ATLANTA — 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 ...

Manual D Ductsize (MDD) is a fast and simple program designed for sizing and analyzing HVAC duct systems based on the Air Conditioning Contractors of America’s (ACCA’s) Manual D procedures. It ...

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 ...