Historical
UL 60335-2-40 Ed. 3-2019
Household And Similar Electrical Appliances - Safety - Part 2-40: Particular Requirements for Electrical Heat Pumps, Air-Conditioners and Dehumidifiers - Published Date: November 1, 2019
This third edition of ANSI/UL 60335-2-40 is an alignment with IEC 60335-2-40:2018 (6th edition), with national differences.
Underwriters Laboratories [ul]