10 CFR § 431.97 - Energy efficiency standards and their compliance dates.

§ 431.97 Energy efficiency standards and their compliance dates.

(a) All basic models of commercial package air conditioning and heating equipment must be tested for performance using the applicable DOE test procedure in § 431.96, be compliant with the applicable standards set forth in paragraphs (b) through (i) of this section, and be certified to the Department under 10 CFR part 429.

(b) Each commercial package air conditioning and heating equipment (excluding air-cooled equipment with cooling capacity less than 65,000 Btu/h) manufactured starting on the compliance date listed in tables 1 through 4 to this paragraph (b) must meet the applicable minimum energy efficiency standard level(s) set forth in tables 1 through 4.

Table 1 to Paragraph (b)—Minimum Efficiency Standards for Air-Cooled Commercial Package Air Conditioning and Heating Equipment With a Cooling Capacity Greater Than or Equal to 65,000 Btu/h

[Excluding double-duct air-conditioners and heat pumps]

Cooling capacity Subcategory Supplementary heating type Minimum
efficiency 1		 Compliance date: equipment
manufactured
starting
on . . .
Air-Cooled Commercial Package Air Conditioning and Heating Equipment with a Cooling Capacity Greater Than or Equal to 65,000 Btu/h (Excluding Double-Duct Air Conditioners and Heat Pumps)
≥65,000 Btu/h and <135,000 Btu/h AC Electric Resistance Heating or No Heating IEER = 14.8 January 1, 2023.
≥65,000 Btu/h and <135,000 Btu/h AC All Other Types of Heating IEER = 14.6 January 1, 2023.
≥65,000 Btu/h and <135,000 Btu/h HP Electric Resistance Heating or No Heating IEER = 14.1
COP = 3.4		 January 1, 2023.
≥65,000 Btu/h and <135,000 Btu/h HP All Other Types of Heating IEER = 13.9
COP = 3.4		 January 1, 2023.
≥135,000 Btu/h and <240,000 Btu/h AC Electric Resistance Heating or No Heating IEER = 14.2 January 1, 2023.
≥135,000 Btu/h and <240,000 Btu/h AC All Other Types of Heating IEER = 14.0 January 1, 2023.
≥135,000 Btu/h and <240,000 Btu/h HP Electric Resistance Heating or No Heating IEER = 13.5
COP = 3.3		 January 1, 2023.
≥135,000 Btu/h and <240,000 Btu/h HP All Other Types of Heating IEER = 13.3
COP = 3.3		 January 1, 2023.
≥240,000 Btu/h and <760,000 Btu/h AC Electric Resistance Heating or No Heating IEER = 13.2 January 1, 2023.
≥240,000 Btu/h and <760,000 Btu/h AC All Other Types of Heating IEER = 13.0 January 1, 2023.
≥240,000 Btu/h and <760,000 Btu/h HP Electric Resistance Heating or No Heating IEER = 12.5
COP = 3.2		 January 1, 2023.
≥240,000 Btu/h and <760,000 Btu/h HP All Other Types of Heating IEER = 12.3
COP = 3.2		 January 1, 2023.

1 See section 3 of appendix A to this subpart for the test conditions upon which the COP standards are based.

Table 2 to Paragraph (b)—Minimum Cooling Efficiency Standards for Water-Cooled Commercial Package Air Conditioning Equipment

Cooling capacity Supplementary heating type Minimum
efficiency 		Compliance date: equipment manufactured starting
on . . .
Water-Cooled Commercial Package Air Conditioning Equipment
<65,000 Btu/h All EER = 12.1 October 29, 2003.
≥65,000 Btu/h and <135,000 Btu/h No Heating or Electric Resistance Heating EER = 12.1 June 1, 2013.
≥65,000 Btu/h and <135,000 Btu/h All Other Types of Heating EER = 11.9 June 1, 2013.
≥135,000 Btu/h and <240,000 Btu/h No Heating or Electric Resistance Heating EER = 12.5 June 1, 2014.
≥135,000 Btu/h and <240,000 Btu/h All Other Types of Heating EER = 12.3 June 1, 2014.
≥240,000 Btu/h and <760,000 Btu/h No Heating or Electric Resistance Heating EER = 12.4 June 1, 2014.
≥240,000 Btu/h and <760,000 Btu/h All Other Types of Heating EER = 12.2 June 1, 2014.

Table 3 to Paragraph (b)—Minimum Cooling Efficiency Standards for Evaporatively-Cooled Commercial Package Air Conditioning Equipment

Cooling capacity Supplementary heating type Minimum
efficiency 		Compliance date: equipment manufactured starting
on . . .
Evaporatively-Cooled Commercial Package Air Conditioning Equipment
<65,000 Btu/h All EER = 12.1 October 29, 2003.
≥65,000 Btu/h and <135,000 Btu/h No Heating or Electric Resistance Heating EER = 12.1 June 1, 2013.
≥65,000 Btu/h and <135,000 Btu/h All Other Types of Heating EER = 11.9 June 1, 2013.
≥135,000 Btu/h and <240,000 Btu/h No Heating or Electric Resistance Heating EER = 12.0 June 1, 2014.
≥135,000 Btu/h and <240,000 Btu/h All Other Types of Heating EER = 11.8 June 1, 2014.
≥240,000 Btu/h and <760,000 Btu/h No Heating or Electric Resistance Heating EER = 11.9 June 1, 2014.
≥240,000 Btu/h and <760,000 Btu/h All Other Types of Heating EER = 11.7 June 1, 2014.

Table 4 to Paragraph (b)—Minimum Efficiency Standards for Double-Duct Air Conditioners and Heat Pumps

Cooling capacity Subcategory Supplementary heating type Minimum
efficiency 1		 Compliance date: equipment
manufactured
starting
on . . .
Double-Duct Air Conditioners and Heat Pumps
≥65,000 Btu/h and <135,000 Btu/h AC Electric Resistance Heating or No Heating EER = 11.2 January 1, 2010.
≥65,000 Btu/h and <135,000 Btu/h AC All Other Types of Heating EER = 11.0 January 1, 2010.
≥65,000 Btu/h and <135,000 Btu/h HP Electric Resistance Heating or No Heating EER = 11.0
COP = 3.3		 January 1, 2010.
≥65,000 Btu/h and <135,000 Btu/h HP All Other Types of Heating EER = 10.8
COP = 3.3		 January 1, 2010.
≥135,000 Btu/h and <240,000 Btu/h AC Electric Resistance Heating or No Heating EER = 11.0 January 1, 2010.
≥135,000 Btu/h and <240,000 Btu/h AC All Other Types of Heating EER = 10.8 January 1, 2010.
≥135,000 Btu/h and <240,000 Btu/h HP Electric Resistance Heating or No Heating EER = 10.6
COP = 3.2		 January 1, 2010.
≥135,000 Btu/h and <240,000 Btu/h HP All Other Types of Heating EER = 10.4
COP = 3.2		 January 1, 2010.
≥240,000 Btu/h and <300,000 Btu/h AC Electric Resistance Heating or No Heating EER = 10.0 January 1, 2010.
≥240,000 Btu/h and <300,000 Btu/h AC All Other Types of Heating EER = 9.8 January 1, 2010.
≥240,000 Btu/h and <300,000 Btu/h HP Electric Resistance Heating or No Heating EER = 9.5
COP = 3.2		 January 1, 2010.
≥240,000 Btu/h and <300,000 Btu/h HP All Other Types of Heating EER = 9.3
COP = 3.2		 January 1, 2010.

1 See section 3 of appendix A to this subpart for the test conditions upon which the COP standards are based.

(c) Each water-source heat pump manufactured starting on the compliance date listed in table 5 to this paragraph (c) must meet the applicable minimum energy efficiency standard level(s) set forth in this paragraph (c).

Table 5 to Paragraph (c)—Minimum Efficiency Standards for Water-Source Heat Pumps (Water-to-Air, Water-Loop)

Cooling capacity Minimum efficiency Compliance date: equipment manufactured starting on . . .
Water-Source Heat Pumps (Water-to-Air, Water-Loop)
<17,000 Btu/h EER = 12.2
COP = 4.3		 October 9, 2015.
≥17,000 Btu/h and <65,000 Btu/h EER = 13.0
COP = 4.3		 October 9, 2015.
≥65,000 Btu/h and <135,000 Btu/h EER = 13.0
COP = 4.3		 October 9, 2015.

(d) Each non-standard size packaged terminal air conditioner (PTAC) and packaged terminal heat pump (PTHP) manufactured on or after October 7, 2010, must meet the applicable minimum energy efficiency standard level(s) set forth in table 6 to this paragraph (d). Each standard size PTAC manufactured on or after October 8, 2012, and before January 1, 2017, must meet the applicable minimum energy efficiency standard level(s) set forth in table 6. Each standard size PTHP manufactured on or after October 8, 2012, must meet the applicable minimum energy efficiency standard level(s) set forth in table 6. Each standard size PTAC manufactured on or after January 1, 2017, must meet the applicable minimum energy efficiency standard level(s) set forth in table 7 to this paragraph (d).

Table 6 to Paragraph (d)—Minimum Efficiency Standards for PTAC and PTHP

Equipment type Category Cooling capacity Efficiency level Compliance date: products manufactured on and
after . . .
PTAC Standard Size <7,000 Btu/h EER = 11.7 October 8, 2012. 2
≥7,000 Btu/h and ≤15,000 Btu/h EER = 13.8−(0.3 × Cap 1) October 8, 2012. 2
>15,000 Btu/h EER = 9.3 October 8, 2012. 2
Non-Standard Size <7,000 Btu/h EER = 9.4 October 7, 2010.
≥7,000 Btu/h and ≤15,000 Btu/h EER = 10.9−(0.213 × Cap 1) October 7, 2010.
>15,000 Btu/h EER = 7.7 October 7, 2010.
PTHP Standard Size <7,000 Btu/h EER = 11.9
COP = 3.3		 October 8, 2012.
≥7,000 Btu/h and ≤15,000 Btu/h EER = 14.0−(0.3 × Cap 1)
COP = 3.7−(0.052 × Cap 1)		 October 8, 2012.
>15,000 Btu/h EER = 9.5
COP = 2.9		 October 8, 2012.
Non-Standard Size <7,000 Btu/h EER = 9.3
COP = 2.7		 October 7, 2010.
≥7,000 Btu/h and ≤15,000 Btu/h EER = 10.8−(0.213 × Cap 1)
COP = 2.9−(0.026 × Cap 1)		 October 7, 2010.
>15,000 Btu/h EER = 7.6
COP = 2.5		 October 7, 2010.

1 “Cap” means cooling capacity in thousand Btu/h at 95 °F outdoor dry-bulb temperature.

2 And manufactured before January 1, 2017. See table 7 to this paragraph (d) for updated efficiency standards that apply to this category of equipment manufactured on and after January 1, 2017.

Table 7 to Paragraph (d)—Updated Minimum Efficiency Standards for PTAC

Equipment type Category Cooling capacity Efficiency level Compliance date: products manufactured on and
after . . .
PTAC Standard Size <7,000 Btu/h EER = 11.9 January 1, 2017.
≥7,000 Btu/h and ≤15,000 Btu/h EER = 14.0−(0.3 × Cap 1) January 1, 2017.
>15,000 Btu/h EER = 9.5 January 1, 2017.

1 “Cap” means cooling capacity in thousand Btu/h at 95 °F outdoor dry-bulb temperature.

(e)

(1) Each single package vertical air conditioner and single package vertical heat pump manufactured on or after January 1, 2010, but before October 9, 2015 (for models ≥65,000 Btu/h and <135,000 Btu/h), or October 9, 2016 (for models ≥135,000 Btu/h and <240,000 Btu/h), must meet the applicable minimum energy conservation standard level(s) set forth in this paragraph (e)(1).

Table 8 to Paragraph (e)(1)—Minimum Efficiency Standards for Single Package Vertical Air Conditioners and Single Package Vertical Heat Pumps

Equipment type Cooling capacity Sub-category Efficiency level Compliance date: products
manufactured on and after . . .
Single package vertical air conditioners and single package vertical heat pumps, single-phase and three-phase <65,000 Btu/h AC
HP		 EER = 9.0
EER = 9.0
COP = 3.0		 January 1, 2010.
January 1, 2010.
Single package vertical air conditioners and single package vertical heat pumps ≥65,000 Btu/h and <135,000 Btu/h AC
HP		 EER = 8.9
EER = 8.9
COP = 3.0		 January 1, 2010.
January 1, 2010.
Single package vertical air conditioners and single package vertical heat pumps ≥135,000 Btu/h and <240,000 Btu/h AC
HP		 EER = 8.6
EER = 8.6
COP = 2.9		 January 1, 2010.
January 1, 2010.

(2) Each single package vertical air conditioner and single package vertical heat pump manufactured on and after October 9, 2015 (for models ≥65,000 Btu/h and <135,000 Btu/h), or October 9, 2016 (for models ≥135,000 Btu/h and <240,000 Btu/h), but before September 23, 2019, must meet the applicable minimum energy conservation standard level(s) set forth in this paragraph (e)(2).

Table 9 to Paragraph (e)(2)—Minimum Efficiency Standards for Single Package Vertical Air Conditioners and Single Package Vertical Heat Pumps

Equipment type Cooling capacity Sub-category Efficiency level Compliance date: products
manufactured on and after . . .
Single package vertical air conditioners and single package vertical heat pumps, single-phase and three-phase <65,000 Btu/h AC
HP		 EER = 9.0
EER = 9.0
COP = 3.0		 January 1, 2010.
January 1, 2010.
Single package vertical air conditioners and single package vertical heat pumps ≥65,000 Btu/h and <135,000 Btu/h AC
HP		 EER = 10.0
EER = 10.0
COP = 3.0		 October 9, 2015.
October 9, 2015.
Single package vertical air conditioners and single package vertical heat pumps ≥135,000 Btu/h and <240,000 Btu/h AC
HP		 EER = 10.0
EER = 10.0
COP = 3.0		 October 9, 2016.
October 9, 2016.

(3) Each single package vertical air conditioner and single package vertical heat pump manufactured on and after September 23, 2019, must meet the applicable minimum energy conservation standard level(s) set forth in this paragraph (e)(3).

Table 10 to Paragraph (e)(3)—Updated Minimum Efficiency Standards for Single Package Vertical Air Conditioners and Single Package Vertical Heat Pumps

Equipment type Cooling
capacity 		Sub-category Efficiency level Compliance date: products
manufactured on and after . . .
Single package vertical air conditioners and single package vertical heat pumps, single-phase and three-phase <65,000 Btu/h AC
HP		 EER = 11.0
EER = 11.0
COP = 3.3		 September 23, 2019.
September 23, 2019.
Single package vertical air conditioners and single package vertical heat pumps ≥65,000 Btu/h and <135,000 Btu/h AC
HP		 EER = 10.0
EER = 10.0
COP = 3.0		 October 9, 2015.
October 9, 2015.
Single package vertical air conditioners and single package vertical heat pumps ≥135,000 Btu/h and <240,000 Btu/h AC
HP		 EER = 10.0
EER = 10.0
COP = 3.0		 October 9, 2016.
October 9, 2016.

(f)

(1) Each computer room air conditioner with a net sensible cooling capacity less than 65,000 Btu/h manufactured on or after October 29, 2012, and before May 28, 2024 and each computer room air conditioner with a net sensible cooling capacity greater than or equal to 65,000 Btu/h and less than 760,000 Btu/h manufactured on or after October 29, 2013, and before May 28, 2024, must meet the applicable minimum energy efficiency standard level(s) set forth in this paragraph (f)(1).

Table 11 to Paragraph (f)(1)—Minimum Efficiency Standards for Computer Room Air Conditioners

Equipment type Net sensible cooling capacity Minimum SCOP efficiency
Downflow Upflow
Air-Cooled <65,000 Btu/h 2.20 2.09
≥65,000 Btu/h and <240,000 Btu/h 2.10 1.99
≥240,000 Btu/h and <760,000 Btu/h 1.90 1.79
Water-Cooled <65,000 Btu/h 2.60 2.49
≥65,000 Btu/h and <240,000 Btu/h 2.50 2.39
≥240,000 Btu/h and <760,000 Btu/h 2.40 2.29
Water-Cooled with Fluid Economizer <65,000 Btu/h 2.55 2.44
≥65,000 Btu/h and <240,000 Btu/h 2.45 2.34
≥240,000 Btu/h and <760,000 Btu/h 2.35 2.24
Glycol-Cooled <65,000 Btu/h 2.50 2.39
≥65,000 Btu/h and <240,000 Btu/h 2.15 2.04
≥240,000 Btu/h and <760,000 Btu/h 2.10 1.99
Glycol-Cooled with Fluid Economizer <65,000 Btu/h 2.45 2.34
≥65,000 Btu/h and <240,000 Btu/h 2.10 1.99
≥240,000 Btu/h and <760,000 Btu/h 2.05 1.94

(2) Each computer room air conditioner manufactured on or after May 28, 2024, must meet the applicable minimum energy efficiency standard level(s) set forth in this paragraph (f)(2).

Table 12 to Paragraph (f)(2)—Updated Minimum Efficiency Standards for Floor-Mounted Computer Room Air Conditioners

Equipment type Downflow and upflow ducted Upflow non-ducted and horizontal flow
Net sensible cooling capacity Minimum NSenCOP efficiency Net sensible cooling capacity Minimum NSenCOP efficiency
Downflow Upflow ducted Upflow
non-ducted 		Horizontal
flow
Air-Cooled <80,000 Btu/h 2.70 2.67 <65,000 Btu/h 2.16 2.65
≥80,000 Btu/h and <295,000 Btu/h 2.58 2.55 ≥65,000 Btu/h and <240,000 Btu/h 2.04 2.55
≥295,000 Btu/h and <930,000 Btu/h 2.36 2.33 ≥240,000 Btu/h and <760,000 Btu/h 1.89 2.47
Air-Cooled with Fluid Economizer <80,000 Btu/h 2.70 2.67 <65,000 Btu/h 2.09 2.65
≥80,000 Btu/h and <295,000 Btu/h 2.58 2.55 ≥65,000 Btu/h and <240,000 Btu/h 1.99 2.55
≥295,000 Btu/h and <930,000 Btu/h 2.36 2.33 ≥240,000 Btu/h and <760,000 Btu/h 1.81 2.47
Water-Cooled <80,000 Btu/h 2.82 2.79 <65,000 Btu/h 2.43 2.79
≥80,000 Btu/h and <295,000 Btu/h 2.73 2.70 ≥65,000 Btu/h and <240,000 Btu/h 2.32 2.68
≥295,000 Btu/h and <930,000 Btu/h 2.67 2.64 ≥240,000 Btu/h and <760,000 Btu/h 2.20 2.60
Water-Cooled with Fluid Economizer <80,000 Btu/h 2.77 2.74 <65,000 Btu/h 2.35 2.71
≥80,000 Btu/h and <295,000 Btu/h 2.68 2.65 ≥65,000 Btu/h and <240,000 Btu/h 2.24 2.60
≥295,000 Btu/h and <930,000 Btu/h 2.61 2.58 ≥240,000 Btu/h and <760,000 Btu/h 2.12 2.54
Glycol-Cooled <80,000 Btu/h 2.56 2.53 <65,000 Btu/h 2.08 2.48
≥80,000 Btu/h and <295,000 Btu/h 2.24 2.21 ≥65,000 Btu/h and <240,000 Btu/h 1.90 2.18
≥295,000 Btu/h and <930,000 Btu/h 2.21 2.18 ≥240,000 Btu/h and <760,000 Btu/h 1.81 2.18
Glycol-Cooled with Fluid Economizer <80,000 Btu/h 2.51 2.48 <65,000 Btu/h 2.00 2.44
≥80,000 Btu/h and <295,000 Btu/h 2.19 2.16 ≥65,000 Btu/h and <240,000 Btu/h 1.82 2.10
≥295,000 Btu/h and <930,000 Btu/h 2.15 2.12 ≥240,000 Btu/h and <760,000 Btu/h 1.73 2.10

Table 13 to Paragraph (f)(2)—Minimum Efficiency Standards for Ceiling-Mounted Computer Room Air Conditioners

Equipment type Net sensible cooling capacity Minimum NSenCOP efficiency
Ducted Non-ducted
Air-Cooled with Free Air Discharge Condenser <29,000 Btu/h 2.05 2.08
≥29,000 Btu/h and <65,000 Btu/h 2.02 2.05
≥65,000 Btu/h and <760,000 Btu/h 1.92 1.94
Air-Cooled with Free Air Discharge Condenser and Fluid Economizer <29,000 Btu/h 2.01 2.04
≥29,000 Btu/h and <65,000 Btu/h 1.97 2
≥65,000 Btu/h and <760,000 Btu/h 1.87 1.89
Air-Cooled with Ducted Condenser <29,000 Btu/h 1.86 1.89
≥29,000 Btu/h and <65,000 Btu/h 1.83 1.86
≥65,000 Btu/h and <760,000 Btu/h 1.73 1.75
Air-Cooled with Fluid Economizer and Ducted Condenser <29,000 Btu/h 1.82 1.85
≥29,000 Btu/h and <65,000 Btu/h 1.78 1.81
≥65,000 Btu/h and <760,000 Btu/h 1.68 1.7
Water-Cooled <29,000 Btu/h 2.38 2.41
≥29,000 Btu/h and <65,000 Btu/h 2.28 2.31
≥65,000 Btu/h and <760,000 Btu/h 2.18 2.2
Water-Cooled with Fluid Economizer <29,000 Btu/h 2.33 2.36
≥29,000 Btu/h and <65,000 Btu/h 2.23 2.26
≥65,000 Btu/h and <760,000 Btu/h 2.13 2.16
Glycol-Cooled <29,000 Btu/h 1.97 2
≥29,000 Btu/h and <65,000 Btu/h 1.93 1.98
≥65,000 Btu/h and <760,000 Btu/h 1.78 1.81
Glycol-Cooled with Fluid Economizer <29,000 Btu/h 1.92 1.95
≥29,000 Btu/h and <65,000 Btu/h 1.88 1.93
≥65,000 Btu/h and <760,000 Btu/h 1.73 1.76

(g)

(1) Each variable refrigerant flow air conditioner or heat pump manufactured on or after the compliance date listed in table 14 to this paragraph (g)(1) and prior to January 1, 2024, must meet the applicable minimum energy efficiency standard level(s) set forth in this paragraph (g)(1).

Table 14 to Paragraph (g)(1)—Minimum Efficiency Standards for Variable Refrigerant Flow Multi-Split Air Conditioners and Heat Pumps

Equipment type Cooling capacity Heating type 1 Efficiency level Compliance date:
equipment manufactured
on and after . . .
VRF Multi-Split Air Conditioners (Air-Cooled) ≥65,000 Btu/h and <135,000 Btu/h No Heating or Electric Resistance Heating 11.2 EER January 1, 2010.
All Other Types of Heating 11.0 EER January 1, 2010.
≥135,000 Btu/h and <240,000 Btu/h No Heating or Electric Resistance Heating 11.0 EER January 1, 2010.
All Other Types of Heating 10.8 EER January 1, 2010.
≥240,000 Btu/h and <760,000 Btu/h No Heating or Electric Resistance Heating 10.0 EER January 1, 2010.
All Other Types of Heating 9.8 EER January 1, 2010.
VRF Multi-Split Heat Pumps (Air-Cooled) ≥65,000 Btu/h and <135,000 Btu/h No Heating or Electric Resistance Heating 11.0 EER, 3.3 COP January 1, 2010.
All Other Types of Heating 10.8 EER, 3.3 COP January 1, 2010.
≥135,000 Btu/h and <240,000 Btu/h No Heating or Electric Resistance Heating 10.6 EER, 3.2 COP January 1, 2010.
All Other Types of Heating 10.4 EER, 3.2 COP January 1, 2010.
≥240,000 Btu/h and <760,000 Btu/h No Heating or Electric Resistance Heating 9.5 EER, 3.2 COP January 1, 2010.
All Other Types of Heating 9.3 EER, 3.2 COP January 1, 2010.
VRF Multi-Split Heat Pumps (Water-Source) <17,000 Btu/h Without Heat Recovery 12.0 EER, 4.2 COP October 29, 2012.
October 29, 2003.
With Heat Recovery 11.8 EER, 4.2 COP October 29, 2012.
October 29, 2003.
≥17,000 Btu/h and <65,000 Btu/h All. 12.0 EER, 4.2 COP October 29, 2003.
≥65,000 Btu/h and <135,000 Btu/h All. 12.0 EER, 4.2 COP October 29, 2003.
≥135,000 Btu/h and <760,000 Btu/h Without Heat Recovery 10.0 EER, 3.9 COP October 29, 2013.
With Heat Recovery 9.8 EER, 3.9 COP October 29, 2013.

1 VRF multi-split heat pumps (air-cooled) with heat recovery fall under the category of “All Other Types of Heating” unless they also have electric resistance heating, in which case it falls under the category for “No Heating or Electric Resistance Heating.”

(2) Each variable refrigerant flow air conditioner or heat pump (except air-cooled systems with cooling capacity less than 65,000 Btu/h) manufactured on or after January 1, 2024, must meet the applicable minimum energy efficiency standard level(s) set forth in this paragraph (g)(2).

Table 15 to Paragraph (g)(2)—Updated Minimum Efficiency Standards for Variable Refrigerant Flow Multi-Split Air Conditioners and Heat Pumps

Equipment type Size category Heating type Minimum efficiency
VRF Multi-Split Air Conditioners (Air-Cooled) ≥65,000 and <135,000 Btu/h All 15.5 IEER.
≥135,000 and <240,000 Btu/h All 14.9 IEER.
≥240,000 Btu/h and <760,000 Btu/h All 13.9 IEER.
VRF Multi-Split Heat Pumps (Air-Cooled) ≥65,000 and <135,000 Btu/h Heat Pump without Heat Recovery 14.6 IEER, 3.3 COP.
Heat Pump with Heat Recovery 14.4 IEER, 3.3 COP.
≥135,000 and <240,000 Btu/h Heat Pump without Heat Recovery
Heat Pump with Heat Recovery		 13.9 IEER, 3.2 COP.
13.7 IEER, 3.2 COP.
≥240,000 Btu/h and <760,000 Btu/h Heat Pump without Heat Recovery
Heat Pump with Heat Recovery		 12.7 IEER, 3.2 COP.
12.5 IEER, 3.2 COP.
VRF Multi-Split Heat Pumps (Water-Source) <65,000 Btu/h Heat Pump without Heat Recovery
Heat Pump with Heat Recovery		 16.0 IEER, 4.3 COP.
15.8 IEER, 4.3 COP.
≥65,000 and <135,000 Btu/h Heat Pump without Heat Recovery
Heat Pump with Heat Recovery		 16.0 IEER, 4.3 COP.
15.8 IEER, 4.3 COP.
≥135,000 and <240,000 Btu/h Heat Pump without Heat Recovery
Heat Pump with Heat Recovery		 14.0 IEER, 4.0 COP.
13.8 IEER, 4.0 COP.
≥240,000 Btu/h and <760,000 Btu/h Heat Pump without Heat Recovery
Heat Pump with Heat Recovery		 12.0 IEER, 3.9 COP.
11.8 IEER, 3.9 COP.

(h) Each direct expansion-dedicated outdoor air system manufactured on or after the compliance date listed in table 16 to this paragraph (h) must meet the applicable minimum energy efficiency standard level(s) set forth in this paragraph (h).

Table 16 to Paragraph (h)—Minimum Efficiency Standards for Direct Expansion-Dedicated Outdoor Air Systems

Equipment Category Subcategory Efficiency level Compliance date: equipment
manufactured
starting on . . .
Direct expansion-dedicated outdoor air systems (AC)—Air-cooled without ventilation energy recovery systems ISMRE2 = 3.8 May 1, 2024.
(AC w/VERS)—Air-cooled with ventilation energy recovery systems ISMRE2 = 5.0 May 1, 2024.
(ASHP)—Air-source heat pumps without ventilation energy recovery systems ISMRE2 = 3.8
ISCOP2 = 2.05		 May 1, 2024.
(ASHP w/VERS)—Air-source heat pumps with ventilation energy recovery systems ISMRE2 = 5.0
ISCOP2 = 3.20		 May 1, 2024.
(WC)—Water-cooled without ventilation energy recovery systems ISMRE2 = 4.7 May 1, 2024.
(WC w/VERS)—Water-cooled with ventilation energy recovery systems ISMRE2 = 5.1 May 1, 2024.
(WSHP)—Water-source heat pumps without ventilation energy recovery systems ISMRE2 = 3.8
ISCOP2 = 2.13		 May 1, 2024.
(WSHP w/VERS)—Water-source heat pumps with ventilation energy recovery systems ISMRE2 = 4.6
ISCOP2 = 4.04		 May 1, 2024.

(i) Air-cooled, three-phase, commercial package air conditioning and heating equipment with a cooling capacity of less than 65,000 Btu/h and air-cooled, three-phase variable refrigerant flow multi-split air conditioning and heating equipment with a cooling capacity of less than 65,000 Btu/h manufactured on or after the compliance date listed in tables 17 and 18 to this paragraph (i) must meet the applicable minimum energy efficiency standard level(s) set forth in this paragraph (i).

Table 17 to Paragraph (i)—Minimum Efficiency Standards for Air-Cooled, Three-Phase, Commercial Package Air Conditioning and Heating Equipment With a Cooling Capacity of Less Than 65,000 Btu/h and Air-Cooled, Three-Phase, Small Variable Refrigerant Flow Multi-Split Air Conditioning and Heating Equipment With a Cooling Capacity of Less Than 65,000 Btu/h

Equipment type Cooling capacity Subcategory Minimum efficiency Compliance date:
equipment
manufactured
starting on . . .
Commercial Package Air Conditioning Equipment <65,000 Btu/h Split-System 13.0 SEER June 16, 2008. 1
Commercial Package Air Conditioning Equipment <65,000 Btu/h Single-Package 14.0 SEER January 1, 2017. 1
Commercial Package Air Conditioning and Heating Equipment <65,000 Btu/h Split-System 14.0 SEER
8.2 HSPF		 January 1, 2017. 1
Commercial Package Air Conditioning and Heating Equipment <65,000 Btu/h Single-Package 14.0 SEER
8.0 HSPF		 January 1, 2017. 1
VRF Air Conditioners <65,000 Btu/h 13.0 SEER June 16, 2008. 1
VRF Heat Pumps <65,000 Btu/h 13.0 SEER
7.7 HSPF		 June 16, 2008. 1

1 And manufactured before January 1, 2025. For equipment manufactured on or after January 1, 2025, see table 18 to this paragraph (i) for updated efficiency standards.

Table 18 to Paragraph (i)—Updated Minimum Efficiency Standards for Air-Cooled, Three-Phase, Commercial Package Air Conditioning and Heating Equipment With a Cooling Capacity of Less Than 65,000 Btu/h and Air-Cooled, Three-Phase, Small Variable Refrigerant Flow Multi-Split Air Conditioning and Heating Equipment With a Cooling Capacity of Less Than 65,000 Btu/h

Equipment type Cooling capacity Subcategory Minimum efficiency Compliance date:
equipment
manufactured
starting on. . .
Commercial Package Air Conditioning Equipment < 65,000 Btu/h Split-System 13.4 SEER2 January 1, 2025.
Commercial Package Air Conditioning Equipment < 65,000 Btu/h Single-Package 13.4 SEER2 January 1, 2025.
Commercial Package Air Conditioning and Heating Equipment < 65,000 Btu/h Split-System 14.3 SEER2
7.5 HSPF2		 January 1, 2025.
Commercial Package Air Conditioning and Heating Equipment < 65,000 Btu/h Single-Package 13.4 SEER2
6.7 HSPF2		 January 1, 2025.
Space-Constrained Commercial Package Air Conditioning Equipment ≤ 30,000 Btu/h Split-System 12.7 SEER2 January 1, 2025.
Space-Constrained Commercial Package Air Conditioning Equipment ≤ 30,000 Btu/h Single-Package 13.9 SEER2 January 1, 2025.
Space-Constrained Commercial Package Air Conditioning and Heating Equipment ≤ 30,000 Btu/h Split-System 13.9 SEER2
7.0 HSPF2		 January 1, 2025.
Space-Constrained Commercial Package Air Conditioning and Heating Equipment ≤ 30,000 Btu/h Single-Package 13.9 SEER2
6.7 HSPF2		 January 1, 2025.
Small-Duct, High-Velocity Commercial Package Air Conditioning < 65,000 Btu/h Split-System 13.0 SEER2 January 1, 2025.
Small-Duct, High-Velocity Commercial Package Air Conditioning and Heating Equipment < 65,000 Btu/h Split-System 14.0 SEER2
6.9 HSPF2		 January 1, 2025.
VRF Air Conditioners < 65,000 Btu/h 13.4 SEER2 January 1, 2025.
VRF Heat Pumps < 65,000 Btu/h 13.4 SEER2
7.5 HSPF2		 January 1, 2025.
[89 FR 44038, May 20, 2024]