The ANSI-recognized national standard for residential HVAC duct design will help you design a duct system in less time. The ANSI-recognized national standard for residential HVAC duct design will help ...

The Air Conditioning Contractors of America Educational Institute (ACCA-EI) Standards Task Team (STT) announces the release of an updated ANSI/ACCA 1 Manual D — 2016 (Residential Duct Systems). The ...

The 45 day public review period started on January 10, 2014 Manual D uses heating and cooling loads to determine space air delivery requirements for residential applications The review draft has a ...