ANSI Process

ACCA is one of over a hundred organizations that develops standards and supports the American National Standards Institute (ANSI). ANSI approval of ACCA manuals, procedures and processes verifies that the principles of openness and due process have been followed in developing these materials, and that a consensus of those directly affected by the standards has been achieved.

ACCA’s ANSI standards activity is overseen by our Standards Task Team, which forms subcommittees as needed to oversee specific standards development. The process is open and you are encouraged to get involved; for more information, contact

Current Activities

Member Input Needed – ACCA Reviewing Several of its ANSI Recognized Standards for Potential Updates 

ACCA has begun the process to review several of its current standards that are recognized by the American National Standards Institute (ANSI).  According to ANSI’s Essential Requirements, once a standard is approved it must be reviewed every 5 years to determine whether it requires (a) additional changes or updates, (b) reaffirmation if no changes are needed, or (c) withdrawal. 


A description of each standard under review is shown below. 

ANSI/ACCA 5 QI – 2015, HVAC Quality Installation Specification

This standard details the nationally recognized minimum criteria for the proper installation of HVAC systems in residential and commercial applications.

ANSI/ACCA 6QR – 2015, Restoring the Cleanliness of an HVAC System

This standard establishes minimum requirements to restore the cleanliness of residential and commercial HVAC systems in accordance with manufacturer- or customer-specified criteria.

ANSI/ACCA 14, QMref – 2015, Quality Maintenance of Commercial Refrigeration Systems

This standard establishes a minimum maintenance program for maintaining refrigeration equipment found in supermarkets, convenience stores, food service, and warehouses, operating with saturated suction temperatures between -40°F and +40°F.

ANSI/ACCA 2 Manual J – 2016, Residential Load Calculations

This manual produces HVAC equipment sizing loads for single-family detached homes, small multi-unit structures, condominiums, town houses, and manufactured homes.  A proper load calculation, performed in accordance with the Manual J 8th Edition procedure, is required by national building codes and most state and local jurisdictions.  Manual J8 provides detailed requirements for producing a residential load calculations per the CLF/CLTD method.


In conjunction with ACCA’s review, if you have any changes or additions to offer on any of the above standards, please contact ACCA’s Manager of Codes & Standards at

ACCA-EI Standards Task Team

Each year ACCA releases a list of significant actions undertaken by the Standards Task Team. View the current document here.

Meeting Minutes

Download this form to propose a standard for consideration by ACCA.

Download this form if you are interested in serving on the STT and would like to nominate yourself for consideration by ACCA.

This document outlines the operational and organizational guidelines for ACCA ANSI standards.

ACCA/ANSI Standards

The following ACCA standards have been approved by ANSI:

Residential Load Calculation (Manual J) (ANSI/ACCA 2 Manual J - 2016)

Residential Duct Systems (Manual D) (ANSI/ACCA 1 Manual D - 2016)

Residential Equipment Selection (Manual S) (ANSI/ACCA 3 Manual S - 2014)

Residential Zoning Systems (Manual Zr) (ANSI/ACCA 11 Manual Zr - 2018)

HVAC Design for Swimming Pools & Spas (Manual SPS) (ANSI/ACCA 10 Manual SPS - 2010 RA 2017)

HVAC Quality Installation Specification (English) (ANSI/ACCA 5 QI - 2015)

Home Performance Evaluation & Improvement (ANSI/ACCA 12 QH - 2018)

HVAC Quality Installation Verification Protocols (ANSI/ACCA 9 QIvp - 2016)

Quality Maintenance of Residential HVAC Systems (ANSI/ACCA 4 QM - 2019)

HVAC System Cleanliness & Restoration (ANSI/ACCA 6 QR - 2015)

Quality Maintenance of Commercial Refrigeration Systems  (ANSI/ACCA 14 QMref – 2015) 

Inspection & Maintenance of Commercial HVAC Systems (ANSI/ASHRAE/ACCA 180 - 2018)

Peak Cooling and Heating Load Calculations in Buildings Except Low-Rise Residential Buildings (ANSI/ASHRAE/ACCA 183 - 2011RA 2017) Available from ASHRAE

Standard for Commercial Building Energy Audits (ASHRAE/ACCA Standard 211-2018) 

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