Transitioning from UL 1995 to UL 60335-2-40

Though not required until December, 2022, the new UL 60335-2-40 standard is currently active for matched and packaged air conditioners/heat pumps (no standalone systems), liquid chillers and hydronic fan coil units, hot water heat pumps, dehumidifiers and supplemental heaters (designed as part of an appliance package).
It is anticipated that the entire scope of UL 1995 will be placed into UL 60335-2-40 in the next 3-6 years. To help provide for a smooth transition from UL 1995 to UL 60335-2-40, this white paper provides an overview of UL 60335-2-40, giving a glimpse of its testing requirements, highlights its differences from UL 1995 and the benefits of working with a third party organization to conduct your HVAC equipment testing.

Fill out form below to download the white paper.

Hide comments


  • Allowed HTML tags: <em> <strong> <blockquote> <br> <p>

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.