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 ...

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 ...

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 ...

Rhvac 8 by Elite Software, www.elitesoft.com, is an HVAC design program that calculates peak heating and cooling load requirements for rooms, zones, systems and entire buildings for residential and ...

Dear James: The bedrooms on the north side of our house are always chilly. We are planning a new house now. What causes this and what should we do to avoid the same problem in our new house? It will ...

DENVER — Johns Manville (JM), a Berkshire Hathaway company and leading building products manufacturer, announced the release of VVSD (very, very small diameter) Spiracoustic Plus ® spiral duct liner.