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

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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) 90.1-2013 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, Central Air Conditioners, Geothermal Heat Pumps, and Light Commercial Heating and Cooling Equipment

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

These ASHRAE 90.1-2013 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 TypeSize CategoryHeating Section TypeSubcategory or Rating ConditionMinimum Efficiency
Air-cooled (cooling mode)<65,000 Btu/hAllSplit system14 SEER; 11 EER; 8.2 HSPF (three phase)
14.5 SEER; 12 EER; 8.2 HSPF (single phase)
Single package14 SEER; 11 EER; 8.0 HSPF (three phase)
14 SEER; 11 EER; 8.0 HSPF (single phase)
≥65,000 Btu/h and <135,000 Btu/hElectric resistance (or none)Split system and single package11.3 EER; 11.4 IEER; 3.35 COP
≥135,000 Btu/h and <240,000 Btu/hElectric resistance (or none)Split system and single package10.9 EER; 11 IEER; 3.25 COP
≥240,000 Btu/haElectric resistance (or none)Split system and single package9.5 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; 3.1 COP (single phase)
Geothermal, open loop water-to-water   20.1; 3.5 COP (single phase)
Geothermal, DGX   16.0 EER; 3.6 COP (single phase)
Electrically Operated Unitary Air Conditioners: Minimum Efficiency Requirements
Equipment TypeSize CategoryHeating Section TypeSubcategory or Rating ConditionMinimum Efficiency
Air conditioners, air-cooled<65,000 Btu/hAllSplit system14.5 SEER and 12 EER (single phase)
14 SEER and 12 EER (three phase)
Single package14 SEER and 11 EER (single phase)
14 SEER and 11 EER (three phase)
≥65,000 Btu/h and <135,000 Btu/hElectric resistance (or none)Split system and single package11.7 EER and 11.8 IEER
All otherSplit system and single package11.5 EER and 11.6 IEER
≥135,000 Btu/h and <240,000 Btu/hElectric resistance (or none)Split system and single package11.7 EER and 11.8 IEER
All otherSplit system and single package11.5 and 11.6 IEER
≥240,000 Btu/h and <760,000 Btu/hbElectric resistance (or none)Split system and single package12.4 EER and 13.6 IEER
All otherSplit system and single package12.2 EER and 13.4 IEER
≥760,000 Btu/hbElectric resistance (or none)Split system and single package12.2 EER and 13.5 IEER
All otherSplit system and single package12.0 EER and 13.3 IEER
a 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 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 90.1-2013.

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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 TypeSubcategory or Rating ConditionSize Category (Input)Efficiency MetricMinimum Efficiency
Boilers, hot waterGas-fired<300,000 Btu/hAFUE90%
≥300,000 Btu/h and ≤2,500,000 Btu/hEta95%
>2,500,000 Btu/h and ≤10,000,000 Btu/hEt94%
>10,000,000 Btu/hbEc82%
Oil-fired<300,000 Btu/hAFUE87%
≥300,000 Btu/h and ≤2,500,000 Btu/hEt85.5%
>2,500,000 Btu/h and ≤10,000,000 Btu/hEt86%
>10,000,000 Btu/hbEc84%
Boilers, steamGas-fired<300,000 Btu/hAFUE90%
Gas-fired (all, except natural draft)≥300,000 Btu/h and ≤2,500,000 Btu/hEt81%
>2,500,000 Btu/h and ≤10,000,000 Btu/hEt83%
>10,000,000 Btu/hbEt79%
Gas-fired, natural draft≥300,000 Btu/h and ≤2,500,000 Btu/hEt81%
>2,500,000 Btu/h and ≤10,000,000 Btu/hEt83%
>10,000,000 Btu/hbEt77%
Oil-fired<300,000 Btu/hAFUE87%
≥300,000 Btu/h and ≤2,500,000 Btu/hEt84%
>2,500,000 Btu/h and ≤10,000,000 Btu/hEt85.5%
>10,000,000 Btu/hbEt81%
a Thermal efficiency (Et) 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 90.1-2013 Table 6.8.1-6

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Table Terms

AFUE - annual fuel utilization efficiency
Ec - cooling efficiency
Et - thermal efficiency

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 90.1-2013 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 TypeSize CategoryUnitsMinimum Efficiency
Path A (Full-Load Optimized Applications)Path B (Part-Load Optimized Applications)
Air-cooled<150 tEER (Btu/W)≥10.40 FL≥9.70 FL
≥13.69 IPLV≥15.81 IPLV
Air-cooled≥150 tEER (Btu/W)≥10.50 FL≥9.70 FL
≥14.00 IPLV≥16.10 IPLV
Water-cooled, electrically operated positive displacement<75 tkW/t≤0.73 FL≤0.78 FL
≤0.60 IPLV≤0.50 IPLV
Water-cooled, electrically operated positive displacement≥75 t and <150 tkW/t≤0.72 FL≤0.75 FL
≤0.56 IPLV≤0.49 IPLV
Water-cooled, electrically operated positive displacement≥150 t and <300 tkW/t≤0.65 FL≤0.68 FL
≤0.54 IPLV≤0.44 IPLV
Water-cooled, electrically operated positive displacement≥300 t and <600 tkW/t≤0.61 FL≤0.62 FL
≤0.52 IPLV≤0.41 IPLV
Water-cooled, electrically operated positive displacement≥600 tkW/t≤0.56 FL≤0.58 FL
≤0.50 IPLV≤0.38 IPLV
Water-cooled, electrically operated centrifugal<150 tkW/t≤0.61 FL≤0.69 FL
≤0.55 IPLV≤0.44 IPLV
Water-cooled, electrically operated centrifugal≥150 t and <300 tkW/t≤0.61 FL≤0.63 FL
≤0.55 IPLV≤0.40 IPLV
Water-cooled, electrically operated centrifugal≥300 t and <400 tkW/t≤0.56 FL≤0.59 FL
≤0.52 IPLV≤0.39 IPLV
Water-cooled, electrically operated centrifugal≥400 t and <600 tkW/t≤0.56 FL≤0.58 FL
≤0.50 IPLV≤0.38 IPLV
Water-cooled, electrically operated centrifugal≥600 tkW/t≤0.56 FL≤0.58 FL
≤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 90.1-2013 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 TypeSize Category (Input)Subcategory or Rating ConditionPerformance Required
Electric storage water heaters≤24 A and ≤250 VHeat pump ≤55 galEFa ≥2.0 and FHR ≥50 gal/h
Heat pump >55 gal and ≤120 galEF ≥2.2 and FHR ≥50 gal/h
Gas storage water heaters≤75,000 Btu/h≥20 gal and ≤55 galEF ≥0.67 and FHR ≥67 gal/h
>55 gal and ≤100 galEF ≥0.77 and FHR ≥67 gal/h
>75,000 Btu/h>100 gal and ≤140 galTE ≥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)/galEF ≥0.90 and GPM ≥2.5 over a 77-deg rise
≥200,000 Btu/h≥4,000 (Btu/h)/galTE ≥0.94 or EF ≥0.93
Solar water heaters≤75,000 Btu/hElectric backupSEF ≥1.8
Gas backupSEF ≥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 90.1-2013 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 TypeSize Category (Input)Subcategory or Rating ConditionMinimum Efficiency
Warm-air furnace, gas fired<225,000 Btu/hMaximum capacity≥95.0% (U.S. North/Canada)
≥90.0% (U.S. South)
≥225,000 Btu/haMaximum capacity80% Et
Warm-air furnace, oil fired<225,000 Btu/hMaximum capacity≥85% AFUE
≥225,000 Btu/haMaximum capacity81% Et
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 90.1-2013.

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Table Terms

AFUE - annual fuel utilization efficiency
Et - 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 90.1-2013 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 TypeSize Category (Input)Subcategory or Rating ConditionMinimum Efficiency
Room air conditioners with louvered sides<6,000 Btu/h-11.2 EER and 11.0 CEER
≥6,000 Btu/h and <8,000 Btu/h-11.2 EER and 11.0 CEER
≥8,000 Btu/h and <14,000 Btu/h-11.3 EER and 11.2 CEER
≥14,000 Btu/h and <20,000 Btu/h-11.2 EER and 11.1 CEER
≥20,000 Btu/h-9.8 EER and 9.8 CEER
Room air conditioners without louvered sides≤8,000 Btu/h-10.4 EER and 10.2 CEER
≥8,000 Btu/h and <20,000 Btu/h-9.8 EER and 9.7 CEER
≥20,000 Btu/h and <28,000 Btu/h-9.8 EER and 9.7 CEER
≥28,000,000 Btu/h-9.8 EER and 9.8 CEER
Room air-conditioner heat pumps with louvered sides<20,000 Btu/h-10.4 EER and 10.3 CEER
≥20,000 Btu/h-9.8 EER and 9.8 CEER
Room air-conditioner heat pumps without louvered sides<14,000 Btu/h-9.8 EER and 9.7 CEER
≥14,000 Btu/h-9.2 EER and 9.1 CEER
Room air conditioner, casement onlyAll capacities-10.0 EER and 9.9 CEER
Room air conditioner, casement sliderAll capacities-10.9 EER and 10.8 CEER

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Table Terms

CEER - combined energy efficiency ratio
EER - energy efficiency ratio