Public Review Drafts

As an accredited standards developing organization through the American National Standards Institute (ANSI) and Standards Council of Canada (SCC), AHRI is required to make all proposed standards available for public review. Comments are invited for the following Public Review Drafts during the listed comment period.

To obtain a copy of Public Review Draft of a proposed American National Standard, contact AHRI via
To obtain a copy of Public Review Draft of a proposed Joint National Standard, contact AHRI via

Proposed Joint Canada-US National Standards
Proposed ANSI/CAN/AHRI Standard 1230 (I-P)-201X, Performance Rating of Variable Refrigerant Flow (VRF) Multi-Split Air-Conditioning and Heat Pump Equipment

This standard covers matched Variable Refrigerant Flow (VRF) Multi-split Air Conditioners and Multi-split Heat Pumps using distributed refrigerant technology as defined in Section 3 of this standard. This standard applies to VRF Multi-split Systems consisting of the following matched components: 1) Outdoor Unit(s) with single or multiple compressors, at least one of which is a variable capacity compressor or has a variable speed drive on a single refrigeration circuit; 2) Indoor Units that have a coil, air movement device intended for single zone air distribution, and a temperature sensing control; and 3) a zone temperature control device. The Multi-split Systems covered in this standard are VRF Multi-split Systems and VRF Heat Recovery Multi-split Systems. Included are Multi-split, matched system air conditioners and Heat Pumps. This standard applies only to electrically operated, vapor compression refrigeration systems.

Public Review Start Date: 10/05/2018

Public Review End Date: 11/19/2018

Proposed ANSI/CAN/AHRI Standard 1250-201X, Performance Rating of Walk-in Coolers and Freezers

The purpose of this standard is to establish, for walk-in coolers and freezers: definitions; test requirements; rating requirements; minimum data requirements for Published Ratings; operating requirements; marking and nameplate data and conformance conditions. This standard applies to mechanical refrigeration equipment consisting of an integrated single package refrigeration unit, or separate unit cooler and condensing unit sections, where the condensing section can be located either outdoor or indoor. Controls may be integral, or can be provided by a separate party as long as performance is tested and certified with the listed mechanical equipment accordingly.

Public Review Start Date: December 21, 2018 

Public Review End Date: February 4, 2019