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Overview of 2023 Residential HVAC Regulatory Changes
The new standards require no less than 14 SEER for residential systems in the northern part of the United States and 15 SEER in the southern part of the United States, where cooling loads are a larger share of home energy use.
Summary of the new DOE regulatory changes:
  • Minimum Efficiency Standard Increasing (over 7%)
  • New efficiency testing standards (SEER2, EER2, HSPF2) are more stringent
    • 0.5” external static pressure (current testing is up to 0.3” E.S.P.)
    • More accurately simulate real world home installations
  • As a result, SEER2, EER2, and HSPF2 will all be lower
    • SEER2 ratings approximately 5% lower
    • EER2 ratings approximately 4% lower
    • HSPF2 ratings approximately 15% lower (does not result in a loss of performance)
  • During the transition, SEER and SEER2, EER and EER2, and HSPF and HSPF2 ratings will be published for all product lines
  • All AHRI system matches will be updated to comply with the new standards
HVAC manufacturers are in the process of testing existing models to determine their new efficiency ratings, as well as producing new models that comply with the 2023 regulations.
As the Larson Company receives updates from our suppliers, we will inform our dealers and update our designated SEER2 page. We encourage you to save the SEER2 page as a “favorite” and check back frequently for new information as it becomes available.

If you have any questions about the upcoming regulation changes, please reach out to your Larson representative, or use our Contact Us form to get in touch.