ARLINGTON, Va. - The Air Conditioning Contractors of America (ACCA) Educational Institute has released a revised version of Manual D for public review in accordance with the procedures of the American National Standards Institute (ANSI). The public comment period will last until Dec. 8, 2008.

Manual D, Residential Duct Systems, is a comprehensive guide outlining the methods and procedures used to design residential duct systems. It is one of a series of recognized ACCA manuals that are used in the design and installation of residential and commercial HVAC systems.

People interested in commenting on this proposed update can visit to download the review version and the response form that explains how to submit comments.

Publication date:11/10/2008