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Communities for Sustainable Heating and Cooling
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  • Create Date April 4, 2025
  • Last Updated April 4, 2025

New Federal Performance Rating Metrics

Effective January 1, 2023, the federal government requires the rated energy efficiency of residential air-source heat pumps and air conditioners be determined using revised test procedures and new metrics.

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We promote the adoption of energy-efficient heat pumps in Massachusetts.
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