DOEProposed Rule
Energy Conservation Standards for Residential Furnaces and Commercial Water Heaters
EnergyEnvironment
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Summary
This proposed rule would update energy conservation standards for residential furnaces and commercial water heaters to reflect the maximum technologically feasible and economically justified energy efficiency levels. The proposed standards would effectively require condensing technology for most residential gas furnaces, raising minimum efficiency from 80% AFUE to 95% AFUE.
Key Points
- 1Raises minimum annual fuel utilization efficiency for gas furnaces from 80% to 95% AFUE
- 2Updates commercial water heater standards to require heat pump technology for larger units
- 3Estimated to save consumers $1.3 billion in annual energy costs over 30 years
- 4Projected to reduce carbon dioxide emissions by 373 million metric tons cumulatively
- 5Manufacturers would have 5 years from the effective date to comply
Key Dates
Published
July 18, 2025
Comment Deadline
November 18, 2025
This summary is for informational purposes only. It may not capture all nuances of the regulation. Always refer to the official text for authoritative information.
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