Alexandria, VA (November 5, 2025) — The Air Conditioning Contractors of America Educational Institute (ACCA-EI) Standards Task Team (STT) announces an American National Standards Institute (ANSI) public review period for reaffirmation of ANSI/ACCA 2 Manual J® - 2016, Residential Load Calculation.
The 45-day ANSI public review period will start on October 31 with a comment deadline of December 15. This standard is proposed to be reaffirmed with no changes in accordance with ANSI’s 5-year Essential Requirements. A separate revision project for Manual J® is in the development stages with future changes planned for 2026.
An online public review form for comments with a link to the above standard is available on the ACCA website.
Manual J® is intended for producing HVAC equipment sizing loads for single-family detached homes, small multi-unit structures, condominiums, townhouses, and manufactured homes. A proper load calculation, performed in accordance with the Manual J® procedure, is required by national building codes and most state and local jurisdictions.
Media inquiries:
Kate Wessels
VP of Communications, Marketing, and Partnerships
kate.wessels@acca.org
703-824-8864