Incorporate Minimum Efficiency Requirements for Heating and Cooling Products into Federal Acquisition Documents

The Federal Energy Management Program (FEMP) organized information about FEMP-designated and ENERGY STAR-qualified heating, ventilating, and air conditioning (HVAC) and water heating products into tables that mirror American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) 90.1-2016 minimum efficiency requirement tables. Federal buyers can use these tables as a reference and to incorporate the proper purchasing requirements set by FEMP and ENERGY STAR into federal acquisition documents.

Minimum efficiency and performance requirements for the following covered product categories are included in the tables below:

Air-source heat pumps (residential)
Boilers (commercial and residential)
Central air conditioners (residential)
Electric chillers, air-cooled (commercial)
Electric chillers, water-cooled (commercial)
Electric storage water heaters (residential)
Gas furnaces (residential)
Gas storage water heaters (residential)
Gas water heaters (commercial)
Geothermal heat pumps (residential)
Light commercial heating and cooling equipment
Room air conditioners (residential)
Solar water heaters (residential)

Air-Source Heat Pumps and Geothermal Heat Pumps

The table below includes minimum efficiency requirements for the following ENERGY STAR-qualified covered product categories: air-source heat pumps (residential) and geothermal heat pumps (residential).

These ASHRAE 90.1-2016 Table 6.8.1-1 and Table 6.8.1-2 equipment types are excluded: through-the-wall, air cooled; small-duct high velocity, air cooled; air conditioners, water cooled; air conditioners, evaporatively cooled; condensing units, air cooled; condensing units, water cooled; and condensing units, evaporatively cooled.

Electrically Operated Unitary Heat Pumps: Minimum Efficiency Requirements
Equipment Type	Size Category	Heating Section Type	Subcategory or Rating Condition	Minimum Efficiency
Air-cooled (cooling mode)	<65,000 Btu/h	All	Split system	15.0 SEER; 12.5 EER; 8.5 HSPF (single phase^a)
	<65,000 Btu/h	All	Single package	15.0 SEER; 12.0 EER; 8.2 HSPF (single phase^a)
	≥65,000 Btu/h and <135,000 Btu/h	Electric resistance (or none)	Split system and single package	11.8 EER; 12.8 IEER; 3.4 COP at 47^ºF
	≥135,000 Btu/h and <240,000 Btu/h	Electric resistance (or none)	Split system and single package	10.9 EER; 12.0 IEER; 3.3 COP at 47ºF
	≥240,000 Btu/h^b	Electric resistance (or none)	Split system and single package	9.5 EER; 10.6 IEER
Geothermal, closed loop water-to-air				17.1 EER; 3.6 COP (single phase)
Geothermal, open loop water-to-air				21.1 EER; 4.1 COP (single phase)
Geothermal, closed loop water-to-water				16.1 EER; 3.1 COP (single phase)
Geothermal, open loop water-to-water				20.1 EER; 3.5 COP (single phase)
Geothermal, DGX				16.0 EER; 3.6 COP (single phase)
^aThree phase heat pumps in the <65,000 Btu/h category are not covered by ENERGY STAR Heat pumps with size equal to or greater than 240,000 Btu/h are not covered by federal purchasing requirements. Minimum efficiency presented is consistent with ASRHAE 90.1-2013. ^b Heat pumps with size equal to or greater than 240,000 Btu/h are not covered by federal purchasing requirements. Minimum efficiency presented is consistent with ASRHAE 90.1-2016.

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Table Terms

COP - coefficient of performance
DGX - direct geoexchange
EER - energy efficiency ratio
HSPF - heating seasonal performance factor
IEER - integrated energy efficiency ratio
SEER - seasonal energy efficiency ratio

Boilers

The table below includes minimum efficiency requirements for the following FEMP-designated and ENERGY STAR-qualified covered product categories: boilers (commercial) and boilers (residential).

Gas- and Oil-Fired Boilers: Minimum Efficiency Requirements
Equipment Type	Subcategory or Rating Condition	Size Category (Input)	Efficiency Metric	Minimum Efficiency
Boilers, hot water	Gas-fired	<300,000 Btu/h	AFUE	90%
		≥300,000 Btu/h and ≤2,500,000 Btu/h	E_t^a	95%
		>2,500,000 Btu/h and ≤10,000,000 Btu/h	E_t	94%
		>10,000,000 Btu/h^b	E_c	82%
	Oil-fired	<300,000 Btu/h	AFUE	87%
		≥300,000 Btu/h and ≤2,500,000 Btu/h	E_t	85.5%
		>2,500,000 Btu/h and ≤10,000,000 Btu/h	E_t	86%
		>10,000,000 Btu/h^b	E_c	84%
Boilers, steam	Gas-fired	<300,000 Btu/h	AFUE	90%
	Gas-fired (all, except natural draft)	≥300,000 Btu/h and ≤2,500,000 Btu/h	E_t	81%
		>2,500,000 Btu/h and ≤10,000,000 Btu/h	E_t	83%
		>10,000,000 Btu/h^b	E_t	79%
	Gas-fired, natural draft	≥300,000 Btu/h and ≤2,500,000 Btu/h	E_t	81%
		>2,500,000 Btu/h and ≤10,000,000 Btu/h	E_t	83%
		>10,000,000 Btu/h^b	E_t	77%
	Oil-fired	<300,000 Btu/h	AFUE	87%
		≥300,000 Btu/h and ≤2,500,000 Btu/h	E_t	84%
		>2,500,000 Btu/h and ≤10,000,000 Btu/h	E_t	85.5%
		>10,000,000 Btu/h^b	E_t	81%
^a Thermal efficiency (E_t) is based on Hydronics Institute, Method to Determine Efficiency of Commercial Space Heating Boilers (HI BTS-2000, Rev. 06.07). ^b Boilers with input greater than 10,000,000 Btu/h are not covered by federal purchasing requirements. Minimum efficiency presented is consistent with ASRHAE 90.1-2016 Table 6.8.1-6

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Table Terms

AFUE - annual fuel utilization efficiency
E_c - cooling efficiency
E_t - thermal efficiency

Central Air Conditioners and Light Commercial Heating and Cooling Equipment

The table below includes minimum efficiency requirements for the following ENERGY STAR-qualified covered product categories: central air conditioners (residential) and light commercial heating and cooling equipment.

Electrically Operated Unitary Air Conditioners: Minimum Efficiency Requirements
Equipment Type	Size Category	Heating Section Type	Subcategory or Rating Condition	Minimum Efficiency
Air conditioners, air-cooled	<65,000 Btu/h	All	Split system	15.0 SEER and 12.5 EER (single phase^a)
	<65,000 Btu/h	All	Single package	15.0 SEER and 12.0 EER (single phase^a)
	≥65,000 Btu/h and <135,000 Btu/h	Electric resistance (or none)	Split system and single package	12.2 EER and 14.0 IEER
	≥65,000 Btu/h and <135,000 Btu/h	All other	Split system and single package	12.0 EER and 13.8 IEER
	≥135,000 Btu/h and <240,000 Btu/h	Electric resistance (or none)	Split system and single package	12.2 EER and 13.2 IEER
	≥135,000 Btu/h and <240,000 Btu/h	All other	Split system and single package	12.0 EER and 13.0 IEER
	≥240,000 Btu/h and <760,000 Btu/h^b	Electric resistance (or none)	Split system and single package	10.0 EER and 11.6 IEER
	≥240,000 Btu/h and <760,000 Btu/h^b	All other	Split system and single package	9.8 EER and 11.4 IEER
	≥760,000 Btu/h^b	Electric resistance (or none)	Split system and single package	9.7 EER and 11.2 IEER
	≥760,000 Btu/h^b	All other	Split system and single package	9.5 EER and 11.0 IEER
^a Three phase air conditioners in the <65,000 Btu/h category are not covered by ENERGY STAR ^b Air conditioners with size equal to or greater than 240,000 Btu/h are not covered by federal purchasing requirements. Minimum efficiency presented is consistent with ASRHAE 90.1-2016.

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Table Terms

Electric Chillers, Air-Cooled and Water-Cooled

The table below includes minimum efficiency requirements for the following FEMP-designated covered product categories: electric chillers, air-cooled; and electric chillers, water-cooled.

These ASHRAE 90.1-2016 Table 6.8.1-3 equipment types are excluded: air-cooled absorption, single effect; water-cooled absorption, single effect; absorption double effect, indirect fired; and absorption double effect, direct fired chillers.

Water-Chilling Packages: Minimum Efficiency Requirements
Equipment Type	Size Category	Units	Minimum Efficiency
Equipment Type	Size Category	Units	Path A (Full-Load Optimized Applications)	Path B (Part-Load Optimized Applications)
Air-cooled	<150 t	EER (Btu/W)	≥10.40 FL	≥9.70 FL
Air-cooled	<150 t	EER (Btu/W)	≥13.69 IPLV	≥15.81 IPLV
Air-cooled	≥150 t	EER (Btu/W)	≥10.50 FL	≥9.70 FL
Air-cooled	≥150 t	EER (Btu/W)	≥14.00 IPLV	≥16.10 IPLV
Water-cooled, electrically operated positive displacement	<75 t	kW/t	≤0.73 FL	≤0.78 FL
Water-cooled, electrically operated positive displacement	<75 t	kW/t	≤0.60 IPLV	≤0.50 IPLV
Water-cooled, electrically operated positive displacement	≥75 t and <150 t	kW/t	≤0.72 FL	≤0.75 FL
Water-cooled, electrically operated positive displacement	≥75 t and <150 t	kW/t	≤0.56 IPLV	≤0.49 IPLV
Water-cooled, electrically operated positive displacement	≥150 t and <300 t	kW/t	≤0.65 FL	≤0.68 FL
Water-cooled, electrically operated positive displacement	≥150 t and <300 t	kW/t	≤0.54 IPLV	≤0.44 IPLV
Water-cooled, electrically operated positive displacement	≥300 t and <600 t	kW/t	≤0.61 FL	≤0.62 FL
Water-cooled, electrically operated positive displacement	≥300 t and <600 t	kW/t	≤0.52 IPLV	≤0.41 IPLV
Water-cooled, electrically operated positive displacement	≥600 t	kW/t	≤0.56 FL	≤0.58 FL
Water-cooled, electrically operated positive displacement	≥600 t	kW/t	≤0.50 IPLV	≤0.38 IPLV
Water-cooled, electrically operated centrifugal	<150 t	kW/t	≤0.61 FL	≤0.69 FL
Water-cooled, electrically operated centrifugal	<150 t	kW/t	≤0.55 IPLV	≤0.44 IPLV
Water-cooled, electrically operated centrifugal	≥150 t and <300 t	kW/t	≤0.61 FL	≤0.63 FL
Water-cooled, electrically operated centrifugal	≥150 t and <300 t	kW/t	≤0.55 IPLV	≤0.40 IPLV
Water-cooled, electrically operated centrifugal	≥300 t and <400 t	kW/t	≤0.56 FL	≤0.59 FL
Water-cooled, electrically operated centrifugal	≥300 t and <400 t	kW/t	≤0.52 IPLV	≤0.39 IPLV
Water-cooled, electrically operated centrifugal	≥400 t and <600 t	kW/t	≤0.56 FL	≤0.58 FL
Water-cooled, electrically operated centrifugal	≥400 t and <600 t	kW/t	≤0.50 IPLV	≤0.38 IPLV
Water-cooled, electrically operated centrifugal	≥600 t	kW/t	≤0.56 FL	≤0.58 FL
Water-cooled, electrically operated centrifugal	≥600 t	kW/t	≤0.50 IPLV	≤0.38 IPLV

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Table Terms

EER - energy efficiency ratio
FL - full load
IPLV - integrated part load value

Electric Storage Water Heaters, Gas Storage Water Heaters, Gas Water Heaters, and Solar Water Heaters

The table below includes performance requirements for the following FEMP-designated and ENERGY STAR-qualified covered product categories: electric storage water heaters (residential), gas storage water heaters (residential), gas water heaters (commercial), and solar water heaters (residential).

These ASHRAE 90.1-2016 Table 7.8 equipment types are excluded: oil storage water heaters; oil instantaneous water heaters; hot-water supply boilers, gas and oil; hot-water supply boilers, gas; hot-water supply boilers, oil; pool heaters, oil and gas; heat-pump pool heaters; and unfired storage tanks.

Water-Heating Equipment: Performance Requirements
Equipment Type	Size Category (Input)	Subcategory or Rating Condition	Performance Required
Electric storage water heaters	≤24 A and ≤250 V	Heat pump ≤55 gal	EF^a ≥2.0 and FHR ≥50 gal/h


		Heat pump >55 gal and ≤120 gal	EF ≥2.2 and FHR ≥50 gal/h
Gas storage water heaters	≤75,000 Btu/h	≥20 gal and ≤55 gal	EF ≥0.67 and FHR ≥67 gal/h
	≤75,000 Btu/h	>55 gal and ≤100 gal	EF ≥0.77 and FHR ≥67 gal/h
	>75,000 Btu/h	>100 gal and ≤140 gal	TE ≥0.94 or EF ≥0.93 and SL ≤0.84 * [(input rate/800) + 100√volume)] Btu/h
Gas instantaneous water heaters	≥50,000 Btu/h and <200,000 Btu/h	<4,000 (Btu/h)/gal	EF ≥0.90 and GPM ≥2.5 over a 77-deg rise
Gas instantaneous water heaters	≥200,000 Btu/h	≥4,000 (Btu/h)/gal	TE ≥0.94 or EF ≥0.93
Solar water heaters	≤75,000 Btu/h	Electric backup	SEF ≥1.8
Solar water heaters	≤75,000 Btu/h	Gas backup	SEF ≥1.2
^a Energy factor (EF) is an efficiency ratio of the energy supplied in heater water divided by the energy input to the water heater.

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Table Terms

EF - energy factor
FHR - first hour rating
GPM - gallons per minute
SEF - solar energy factor
SL - standby loss
TE - thermal efficiency

Gas Furnaces

The table below includes minimum efficiency requirements for the following ENERGY STAR-qualified covered product category: gas furnaces (residential).

These ASHRAE 90.1-2016 Table 6.8.1-5 equipment types are excluded: warm-air duct furnaces, gas fired; warm-air unit heaters, gas fired; and warm-air unit heaters, oil fired.

Warm-Air Furnaces: Minimum Efficiency Requirements
Equipment Type	Size Category (Input)	Subcategory or Rating Condition	Minimum Efficiency
Warm-air furnace, gas fired	<225,000 Btu/h	Maximum capacity	≥95.0% (U.S. North/Canada)
	<225,000 Btu/h	Maximum capacity	≥90.0% (U.S. South)
	≥225,000 Btu/h^a	Maximum capacity	80% E_t
Warm-air furnace, oil fired	<225,000 Btu/h	Maximum capacity	≥85% AFUE
Warm-air furnace, oil fired	≥225,000 Btu/h^a	Maximum capacity	81% E_t
^a Furnaces with input equal to or greater than 225,000 Btu/h are not covered by federal purchasing requirements. Minimum efficiency presented is consistent with ASRHAE 90.1-2016.

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Table Terms

AFUE - annual fuel utilization efficiency
E_t - thermal efficiency

Room Air Conditioners

The table below includes minimum efficiency requirements for the following ENERGY STAR-qualified covered product category: room air conditioners (residential).

These ASHRAE 90.1-2016 Table 6.8.1-4 equipment types are excluded: packaged terminal air conditioners, packaged terminal heat pumps, single-package vertical air conditioners, and single-package vertical heat pumps.

Electrically Operated Room Air Conditioners: Minimum Efficiency Requirements
Equipment Type	Size Category (Input)	Subcategory or Rating Condition	Minimum Efficiency
Room air conditioners with louvered sides	<6,000 Btu/h	-	12.1 CEER
	≥6,000 Btu/h and <8,000 Btu/h	-	12.1 CEER
	≥8,000 Btu/h and <14,000 Btu/h	-	12.0 CEER
	≥14,000 Btu/h and <20,000 Btu/h	-	11.8 CEER
	≥20,000 Btu/h and <28,000 Btu/h	-	10.3 CEER
	≥28,000 Btu/h	-	9.9 CEER
Room air conditioners without louvered sides	≤8,000 Btu/h	-	11.0 CEER
	≥8,000 Btu/h and <11,000 Btu/h	-	10.6 CEER
	≥11,000 Btu/h and <14,000 Btu/h	-	10.5 CEER
	≥14,000,000 Btu/h and <20,000 Btu/h	-	10.2 CEER
	≥20,000,000 Btu/h	-	10.3 CEER
Room air-conditioner heat pumps with louvered sides	<20,000 Btu/h	-	10.8 CEER
Room air-conditioner heat pumps with louvered sides	≥20,000 Btu/h	-	10.2 CEER
Room air-conditioner heat pumps without louvered sides	<14,000 Btu/h	-	10.2 CEER
Room air-conditioner heat pumps without louvered sides	≥14,000 Btu/h	-	9.6 CEER
Room air conditioner, casement only	All capacities	-	10.5 CEER
Room air conditioner, casement slider	All capacities	-	11.4 CEER

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Table Terms

CEER - combined energy efficiency ratio
EER - energy efficiency ratio