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CFR > Title 10 - Energy > CHAPTER II—DEPARTMENT OF ENERGY > SUBCHAPTER D—ENERGY CONSERVATION (parts 400 to 491) > PART 431—ENERGY EFFICIENCY PROGRAM FOR CERTAIN COMMERCIAL AND INDUSTRIAL EQUIPMENT > SUBPART F—Commercial Air Conditioners and Heat Pumps (§431.91 to §431.97) > 431.97—Energy efficiency standards and their effective dates.

CFR

431.97—Energy efficiency standards and their effective dates.

(a) Each commercial air conditioner or heat pump (including single package vertical air conditioners and single package vertical heat pumps) 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) 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
Product Category Cooling capacity Sub-category Efficiency level 1
Productsmanufactured untilOctober 29, 2003 Products manufactured on and afterOctober 29, 2003
Small Commercial Packaged Air Conditioning and Heating Equipment Air Cooled, 3 Phase <65,000 Btu/h Split SystemSingle Package SEER = 10.0SEER = 9.7 SEER = 10.0.SEER = 9.7.
Air Cooled ≥65,000 Btu/h and <135,000 Btu/h All EER = 8.9 EER = 8.9.
Water Cooled, Evaporatively Cooled, and Water-Source <17,000 Btu/h ACHP EER = 9.3EER = 9.3 EER = 12.1.EER = 11.2.
≥17,000 Btu/h and <65,000 Btu/h ACHP EER = 9.3EER = 9.3 EER = 12.1.EER = 12.0.
≥65,000 Btu/h and <135,000 Btu/h ACHP EER = 10.5EER = 10.5 EER = 11.5.2 EER = 12.0.
Large Commercial Packaged Air Conditioning and Heating Equipment Air Cooled ≥135,000 Btu/h and <240,000 Btu/h All EER = 8.5 EER = 8.5.
Water-Cooled and Evaporatively Cooled ≥135,000 Btu/h and <240,000 Btu/h All EER = 9.6 EER = 9.6.3
Packaged Terminal Air Conditioners and Heat Pumps All <7,000 Btu/h All EER = 8.88 EER = 8.88.
≥7,000 Btu/h and ≤15,000 Btu/h EER = 10.0−(0.16 × capacity [in kBtu/h at 95 °F outdoor dry-bulb temperature]) EER = 10.0−(0.16 × capacity [in kBtu/h at 95 °F outdoor dry-bulb 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 became EER = 11.0.
Table 2 to § 431.97 —Minimum Heating Efficiency Levels
Product Category Cooling capacity Sub-category Efficiency level 1
Productsmanufactured untilOctober 29, 2003 Products manufactured on and after October 29, 2003
Small Commercial Packaged Air Conditioning and Heating Equipment Air Cooled, 3 Phase <65,000 Btu/h Split SystemSingle Package HSPF = 6.8HSPF = 6.6 HSPF = 6.8.HSPF = 6.6.
Water-Source <135,000 Btu/h Split System and Single Package COP = 3.8 COP = 4.2.
Air Cooled ≥65,000 Btu/h and <135,000 Btu/h All COP = 3.0 COP = 3.0.
Large Commercial Packaged Air Conditioning and Heating Equipment Air Cooled ≥135,000 Btu/h and <240,000 Btu/h Split System and Single Package COP = 2.9 COP = 2.9.
Code of Federal Regulations 466
Packaged Terminal Heat Pumps All All All COP = 1.3 (0.16 × the applicable minimum cooling EER prescribed in Table 1—Minimum Cooling Efficiency Levels) COP = 1.3 (0.16 × the applicable minimum cooling EER prescribed in Table 1—Minimum Cooling 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.
(b) Commercial package air conditioning and heating equipment manufactured on or after January 1, 2010 (except for air-cooled, three-phase small commercial package air-conditioning and heating equipment <65,000 Btu/h for which the effective date is June 16, 2008) must meet the applicable energy efficiency standards set forth in this section.
Product Cooling capacity(Btu/h) Category Efficiency level†
Small commercial package air conditioning and heating equipment, (air-cooled, three-phase) <65,000 AC SEER=13.0.
HP SEER=13.0.
HSPF=7.7.
Single package vertical air conditioners and single package vertical heat pumps, single-phase and three phase <65,000 AC EER=9.0.
HP EER=9.0.
COP=3.0.
Single package vertical air conditioners and single package vertical heat pumps ≥ 65,000 and <135,000 AC EER=8.9.
HP EER=8.9.
COP=3.0.
Single package vertical air conditioners and single package vertical heat pumps ≥135,000 and <240,000 AC EER=8.6.
HP EER=8.6.
COP=2.9.
Small commercial package air-conditioning and heating equipment (air-cooled) ≥65,000 and <135,000 AC EER = 11.2*EER = 11.0**
HP EER = 11.0*EER = 10.8**
Large commercial package air-conditioning and heating equipment (air-cooled) ≥135,000 and <240,000 AC EER = 11.0*EER = 10.8**
HP EER = 10.6*EER = 10.4**
Very large commercial package air-conditioning and heating equipment (air-cooled) ≥ 240,000 and <760,000 AC EER = 10.0*EER = 9.8**
HP EER = 9.5*EER = 9.3**
Small commercial package air-conditioning heat pump ≥65,000 and <135,000 HP COP = 3.3
Large commercial package air-conditioning heat pump ≥135,000 and <240,000 HP COP = 3.2
Very large commercial package air-conditioning heat pump ≥ 240,000 and <760,000 HP COP = 3.2
* 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.
(c) Each standard size packaged terminal air conditioner or packaged terminal heat pump manufactured on or after September 30, 2012 and each non-standard size packaged terminal air conditioner or packaged terminal heat pump manufactured on or after September 30, 2010, shall have an Energy Efficiency Ratio and Coefficient of Performance no less than:
Equipment class Energy conservation standards *
Equipment Category Cooling capacity (British thermal units per hour [Btu/h])
PTAC Standard Size <7,0007,000-15,000 >15,000 EER = 11.7EER = 13.8−(0.300 × Cap**) EER = 9.3
Non-Standard Size <7,0007,000-15,000 >15,000 EER = 9.4EER = 10.9−(0.213 × Cap**) EER = 7.7
PTHP Standard Size <7,0007,000-15,000 >15,000 EER = 11.9COP = 3.3 EER = 14.0−(0.300 × Cap**) COP = 3.7−(0.052 × Cap**) EER = 9.5 COP = 2.9
Non-Standard Size <7,0007,000-15,000 >15,000 EER = 9.3COP = 2.7 EER = 10.8−(0.213 × Cap**) COP = 2.9−(0.026 × Cap**) EER = 7.6 COP = 2.5
* For equipment rated according to the DOE test procedure, 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. 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.
** Cap means cooling capacity in thousand British thermal units per hour (Btu/h) at 95 °F outdoor dry-bulb temperature.
(d) Each water-cooled and evaporatively-cooled commercial package air conditioning and heating equipment with a cooling capacity at or above 240,000 Btu/h and less than 760,000 Btu/h manufactured on or after January 10, 2011, shall meet the following standard levels:
(1) For equipment that utilizes electric resistance heat or without heating, the energy efficiency ratio must be not less than 11.0.
(2) For equipment that utilizes all other types of heating, the energy efficiency ratio must be not less than 10.8.

Code of Federal Regulations

[69 FR 61969, Oct. 21, 2004, as amended at 70 FR 60415, Oct. 18, 2005; 70 FR 61698, Oct. 25, 2005; 71 FR 71371, Dec. 8, 2006; 73 FR 58828, Oct. 7, 2008; 74 FR 12073, Mar. 23, 2009; 74 FR 36354, July 22, 2009]
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