Title 10: Energy
PART 431—ENERGY EFFICIENCY PROGRAM FOR CERTAIN COMMERCIAL AND INDUSTRIAL EQUIPMENT
Subpart F—Commercial Air Conditioners and Heat Pumps
Energy Efficiency Standards
§ 431.97 Energy efficiency standards and their effective dates.
(a) Each commercial air conditioner or heat pump manufactured on or after January 1, 1994 (except for large commercial package air-conditioning and heating equipment, for which the effective date is January 1, 1995) and before January 1, 2010 must meet the applicable minimum energy efficiency standard level(s) set forth in Tables 1 and 2 of this section.
Table 1 to § 431.97_Minimum Cooling Efficiency Levels-------------------------------------------------------------------------------------------------------------------------------------------------------- Efficiency level \1\ --------------------------------------------- Product Category Cooling capacity Sub-category Products manufactured Products manufactured until October 29, on and after October 2003 29, 2003--------------------------------------------------------------------------------------------------------------------------------------------------------Small Commercial Packaged Air Air Cooled, 3 phase... <65,000 Btu/h...... Split System......... SEER = 10.0.......... SEER = 10.0. Conditioning and Heating Equipment. -------------------------------------------------------------------- Single Package SEER = 9.7........... SEER = 9.7. -------------------------------------------------------------------------------------------------------------------- Air Cooled............ >=65,000 Btu/h and All.................. EER = 8.9............ EER = 8.9. <135,000 Btu/h. -------------------------------------------------------------------------------------------------------------------- Water Cooled <17,000 Btu/h...... AC................... EER = 9.3............ EER = 12.1. Evaporatively Cooled and Water-Source. -------------------------------------------------------------------- HP................... EER = 9.3............ EER = 11.2. -------------------------------------------------------------------------------------------- >=17,000 Btu/h and AC................... EER = 9.3............ EER = 12.1. <65,000 Btu/h. -------------------------------------------------------------------- HP................... EER = 9.3............ EER = 12.0. -------------------------------------------------------------------------------------------- >=65,000 Btu/h and AC................... EER = 10.5........... EER = 11.5.\2\ <135,000 Btu/h. -------------------------------------------------------------------- HP................... EER = 10.5........... EER = 12.0.--------------------------------------------------------------------------------------------------------------------------------------------------------Large Commercial Packaged Air Air Cooled............ >=135,000 Btu/h and All.................. EER = 8.5............ EER = 8.5. Conditioning and Heating Equipment. <240,000 Btu/h. -------------------------------------------------------------------------------------------------------------------- Water-Cooled and >=135,000 and All.................. EER = 9.6............ EER = 9.6.\3\ Evaporatively Cooled. <240,000 Btu/h.--------------------------------------------------------------------------------------------------------------------------------------------------------Packaged Terminal Air Conditioners All................... <7,000 Btu/h....... All.................. EER = 8.88........... EER = 8.88. and Heat Pumps. ------------------------ --------------------------------------------- >=7,000 Btu/h and EER = 10.0 - (0.16 x EER = 10.0 - (0.16 x [le]15,000 Btu/h. capacity [in kBtu/h capacity [in kBtu/h at 95 °F outdoor at 95 °F outdoor dry-bulb dry-bulb temperature]). temperature]). ------------------------ --------------------------------------------- >15,000 Btu/h...... ..................... EER = 7.6............ EER = 7.6.--------------------------------------------------------------------------------------------------------------------------------------------------------\1\ For equipment rated according to the ARI standards, all EER values must be rated at 95 °F outdoor dry-bulb temperature for air-cooled products and evaporatively-cooled products and at 85 °F entering water temperature for water-cooled products. For water-source heat pumps rated according to the ISO standard, EER must be rated at 30 °C (86 °F) entering water temperature.\2\ Deduct 0.2 from the required EER for units with heating sections other than electric resistance heat.\3\ Effective 10/29/2004, the minimum value becomes EER = 11.0.
Table 2 to § 431.97_Minimum Heating Efficiency Levels-------------------------------------------------------------------------------------------------------------------------------------------------------- Efficiency level \1\ --------------------------------------------- Product Category Cooling capacity Sub-category Products manufactured Products manufactured until October 29, on and after October 2003 29, 2003--------------------------------------------------------------------------------------------------------------------------------------------------------Small Commercial Packaged Air Air Cooled, 3 Phase... <65,000 Btu/h...... Split System......... HSPF = 6.8........... HSPF = 6.8. Conditioning and Heating Equipment. -------------------------------------------------------------------- Single Package....... HSPF = 6.6........... HSPF = 6.6. -------------------------------------------------------------------------------------------------------------------- Water-source.......... <135,000 Btu/h..... Split System and COP = 3.8............ COP = 4.2. Single Package. -------------------------------------------------------------------------------------------------------------------- Air Cooled............ >=65,000 Btu/h and All.................. COP = 3.0............ COP = 3.0. <135,000 Btu/h.--------------------------------------------------------------------------------------------------------------------------------------------------------Large Commercial Packaged Air Air Cooled............ >=135,000 Btu/h and Split System and COP = 2.9............ COP = 2.9. Conditioning Package and Heating <240,000 Btu/h. Single Package. Equipment.--------------------------------------------------------------------------------------------------------------------------------------------------------Packaged Terminal Heat Pumps....... All................... All................... All.................. COP = 1.3+(0.16 x the COP = 1.3+(0.16 x the applicable minimum applicable minimum cooling EER cooling EER prescribed in Table prescribed in Table 1_Minimum Cooling 1_Minimum Cooling Efficiency Levels). Efficiency Levels).--------------------------------------------------------------------------------------------------------------------------------------------------------\1\ For units tested by ARI standards, all COP values must be rated at 47 °F outdoor dry-bulb temperature for air-cooled products, and at 70 °F entering water temperature for water-source heat pumps. For heat pumps tested by the ISO Standard 13256-1, the COP values must be obtained at the rating point with 20 °C (68 °F) entering water temperature.
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(b) Commercial package air conditioning and heating equipment manufactured on or after January 1, 2010, shall have Energy Efficiency Ratio and Coefficient of Performance no less than:
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---------------------------------------------------------------------------------------------------------------- Product Cooling capacity (Btu/h) Category Efficiency level†----------------------------------------------------------------------------------------------------------------Small commercial package air- >=65,000 and <135,000 AC................... EER = 11.2* conditioning and heating equipment EER = 11.0** (air-cooled). HP................... EER = 11.0* EER = 10.8**Large commercial package air- >=135,000 and AC................... EER = 11.0* conditioning and heating equipment <240,000. EER = 10.8** (air-cooled). HP................... EER = 10.6* EER = 10.4**Very large commercial package air- >= 240,000 and AC................... EER = 10.0* conditioning (air-cooled). <760,000. EER = 9.8** HP................... EER = 9.5* EER = 9.3**Small commercial package air- >=65,000 and <135,000 HP................... COP = 3.3 conditioning heat pump.Large commercial package air- >=135,000 and HP................... COP = 3.2 conditioning heat pump. <240,000.Very large commercial package air- >= 240,000 and HP................... COP = 3.2 conditioning heat pump. <760,000.----------------------------------------------------------------------------------------------------------------* This EER level applies to equipment that has electric resistance heat or no heating.** This EER level applies to equipment with all other heating-system types that are integrated into the unitary equipment.†EER at a standard temperature rating of 95 °F dry-bulb and COP at a high temperature rating of 47 °F dry-bulb.
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[69 FR 61969, Oct. 21, 2004, as amended at 70 FR 60415, Oct. 18, 2005; 70 FR 61698, Oct. 25, 2005]
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