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UL Works with Industry to Propose an Effective Date Extension for UL 60335-2-40


March 21, 2019

By Gary Johnson, Engineering Manager HVAC/R

In February 2019 UL issued a bulletin to advise subscribers of an effective date extension proposal for UL 60335-2-40, Household And Similar Electrical Appliances - Safety - Part 2-40: Particular Requirements for Electrical Heat Pumps, Air-Conditioners and Dehumidifiers.

UL Standard 1995 and CSA Standard C22.2 No. 236 are currently scheduled to sunset on November 16, 2022 and November 30, 2022, respectively.  The bulletin proposes the effective date be moved to January 1, 2024.  Upon withdrawal of these standards, the latest versions of the bi-national UL/CSA Standard 60335-2-40 will become effective.  Furthermore, new Listings or changes after January 1, 2024 will be mandated to use UL/CSA 60335-2-40.  The intent of this proposal is to allow manufacturers the additional time necessary to prepare their products for compliance.  This effective date change also better aligns with the Department of Energy (DOE) who has published new requirements that will take effect within the similar timeframe and also the California Air Resources Board (CARB) who has adopted legislation that prohibits the use of high-GWP HFCs refrigerants for USE and ULE equipment effective January 1, 2023 and chillers effective January 1, 2024. 

Questions may be directed to Gary Johnson (Engineering Manager) or Brian Rodgers (PDE).