The Air Conditioning Contractors of America (ACCA) Educational Institute Standards Task Team announced that ACCA Standard 12 - Home Evaluation and Performance Improvement - is approved by the American National Standards Institute (ANSI).

ACCA Standard 12 establishes the minimum evaluation requirements for energy consumption, water conservation, occupant comfort, and indoor air quality in residential buildings. ACCA improved the 2014 version of Standard 12 by treating a home as one system comprised of many interconnected components working together to ensure the home is efficient, comfortable, and healthy. The 2018 version of Standard 12 includes evaluation and improvement procedures promulgated by ACCA, the Building Performance Institute (BPI), and the Residential Energy Services Network (RESNET).

“ACCA created Standard 12 because professional contractors recognize the need to offer comprehensive home evaluations and to correctly prioritizing the work,” said Glenn Hourahan, ACCA senior vice president of technical and accreditation. “Home evaluations must be done methodically, in a step-by-step approach that takes into consideration how every system in a home reacts to changes in any other system. ACCA Standard 12 sets the minimum requirements to ensure this is possible.”

ANSI has recognized 14 ACCA quality standards, including several created in conjunction with ASHRAE.

Paul Stalknecht, ACCA president and CEO, said, “ACCA is proud to be the standard setter for the residential marketplace. Standard 12 adds to ACCA’s collection of quality standards that provide contractors with the requirements needed to ensure buildings are energy efficient and their HVAC systems are operating as promised.”

ACCA Standard 12 is available for complimentary download at Bound copies may be purchased from the ACCA bookstore at

Publication date: 3/7/2018

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