Residential heating and cooling guide approved by ANSI.

ARLINGTON, Va. - Manual S, Residential Equipment Selection, has received approval as an industry standard by the American National Standards Institute. The manual was developed by the Air Conditioning Contractors of America and is a guide for residential heating and cooling equipment selection. It is one of a series of recognized ACCA manuals used in the design and installation of residential HVAC systems.

Manual S is the third ACCA manual to be recognized as an ANSI standard. ACCA's most recent Manual D, Residential Duct Design, and Manual J, Residential Load Calculation, have both already been approved as ANSI standards.

The manuals can be ordered by calling (888) 290-2220 or visiting