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10 CFR § 431.97 - Energy efficiency standards

Last updated: 10 September 2019

The code (10 CFR § 431.97 - Energy efficiency standards) defines energy efficiency ratio and combined energy efficiency ratio of commercial air conditioners and heat pumps.

 

Hereafter the Minimum Cooling Efficiency Standards for Air Conditioning and Heating Equipment will be enumerated, this foes not include single package vertical air conditioners and single package vertical heat pumps, packaged terminal air conditioners and packaged terminal heat pumps, computer room air conditioners, variable refrigerant flow multi-split air conditioners and heat pumps, and double-duct air-cooled commercial package air conditioning and heating equipment. These are enumerated in other policy entries.

 

The compliance date varies across different equipment and it is thus specified next to the relative standers. Compliance dates have to be intended as the date equipment manufactured after which need to comply with the standard.

 

Air-cooled

  • Small Commercial Package Air Conditioning and Heating Equipment (3-Phase, Split-System) <65,000 Btu/h - SEER=13 - Compliance date: June 16, 2008
  • Small Commercial Package Air Conditioning and Heating Equipment (3-Phase, Single-Package) <65,000 Btu/h - SEER = 13 - Compliance date: June 16, 2008
  • Small Commercial Package Air Conditioning and Heating Equipment  =65,000 Btu/h and <135,000 Btu/h:
    • AC - No Heating or Electric Resistance Heating - EER = 11.2 - Compliance date: January 1, 2010.
    • AC - All Other Types of Heating - EER = 11.0 - Compliance date: January 1, 2010
    • HP - No Heating or Electric Resistance Heating - EER = 11.0 - Compliance date: January 1, 2010.
    • HP - All Other Types of Heating - EER = 10.8 - Compliance date: January 1, 2010.
  • Large Commercial Package Air Conditioning and Heating Equipment =135,000 Btu/h and <240,000 Btu/h
    • AC - No Heating or Electric Resistance Heating - EER = 11.0 - Compliance date: January 1, 2010.
    • AC - All Other Types of Heating EER = 10.8 - Compliance date: January 1, 2010
    • HP - No Heating or Electric Resistance Heating - EER = 10.6 - Compliance date: January 1, 2010.
    • HP - All Other Types of Heating - EER = 10.4 - Compliance date: January 1, 2010.
  • Very Large Commercial Package Air Conditioning and Heating Equipment =240,000 Btu/h and <760,000 Btu/h
    • AC - No Heating or Electric Resistance Heating - EER = 10.0 - Compliance date: January 1, 2010.
    • AC - All Other Types of Heating - EER = 9.8 - Compliance date: January 1, 2010
    • HP - No Heating or Electric Resistance Heating - EER = 9.5 - Compliance date: January 1, 2010.
    • HP - All Other Types of Heating - EER = 9.3 - Compliance date: January 1, 2010.

Water-cooled

  • Small Commercial Package Air Conditioning and Heating Equipment <65,000 Btu/h - EER = 12.1 - Compliance date: October 29, 2003
  • Small Commercial Package Air Conditioning and Heating Equipment =65,000 Btu/h and <135,000 Btu/h
    • No Heating or Electric Resistance Heating - EER = 12.1- Compliance date: June 1, 2013.
    • All Other Types of Heating - EER = 11.9 - Compliance date: June 1, 2013
  • Large Commercial Package Air-Conditioning and Heating Equipment =135,000 Btu/h and <240,000 Btu/h
    • No Heating or Electric Resistance Heating - EER = 12.5 - Compliance date: June 1, 2014.
    • All Other Types of Heating - EER = 12.3 - Compliance date: June 1, 2014
  • Very Large Commercial Package Air-Conditioning and Heating Equipment =240,000 Btu/h and <760,000 Btu/h
    • No Heating or Electric Resistance Heating - EER = 12.4 - Compliance date: June 1, 2014
    • All Other Types of Heating - EER = 12.2 - Compliance date: June 1, 2014

Evaporatively-Cooled

  • Small Commercial Package Air-Conditioning and Heating Equipment <65,000 Btu/h - EER = 12.1 - - Compliance date: October 29, 2003
  • Small Commercial Package Air-Conditioning and Heating Equipment =65,000 Btu/h and <135,000 Btu/h
    • No Heating or Electric Resistance Heating - EER = 12.1 - Compliance date: June 1, 2013
    • All Other Types of Heating - EER = 11.9 - Compliance date: June 1, 2013
  • Large Commercial Package Air-Conditioning and Heating Equipment =135,000 Btu/h and <240,000 Btu/h
    • No Heating or Electric Resistance Heating - EER = 12.0 - Compliance date: June 1, 2014
    • All Other Types of Heating - EER = 11.8 - Compliance date: June 1, 2014
  • Very Large Commercial Package Air Conditioning and Heating Equipment =240,000 Btu/h and <760,000 Btu/h
    • No Heating or Electric Resistance Heating - EER = 11.9 - Compliance date: June 1, 2014.
    • All Other Types of Heating - EER = 11.7 - Compliance date: June 1, 2014

 

Small Commercial Package Air-Conditioning and Heating Equipment (Water-Source: Water-to-Air, Water-Loop)

  • <17,000 Btu/h HP - EER = 11.2 - Compliance date: October 29, 2003
  • =17,000 Btu/h and <65,000 Btu/h - EER = 12.0 - Compliance date: October 29, 2003.
  • =65,000 Btu/h and <135,000 Btu/h - EER = 12.0 - Compliance date: October 29, 2003.

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