Uniform Energy Factor for Residential & Commercial Water Heaters

The Uniform Energy Factor

The Uniform Energy Factor for residential and certain commercial water heaters refers to its efficiency when run under standardized conditions for a 24-hour period. Expressed as a decimal, the Uniform Energy Factor is determined by running a Department of Energy specified simulated use test (SUT). Depending on a product’s First Hour Rating (FHR), the SUT is run using one of four different draw patterns. When compared to standard products of the same fuel type, a water heater with a higher Uniform Energy Factor rating uses less energy, resulting in both energy and monetary savings. Though, products must be compared to other products in the same draw pattern.
Uniform Energy Factor (UEF) Bulletin

First Hour Rating

The First Hour Rating (FHR) in gallons, is determined by running a Department of Energy specified test with the outlet temperature of 125°F (+/- 5°F). A draw of three gallons per minute starts and then discontinues once the hot water outlet temperature drops 15°F. The water heater is then allowed to recover and the process continues repeatedly until one hour elapses. The sum of the amount of hot water drawn during the test is the First Hour Rating.

National Average Energy Costs
  • $0.1200 Cost per kWh. (Electric)
  • $1.0900 Cost Per Therm. (Nat. Gas)
  • $2.4100 Cost Per Gal. (Propane Gas)
  • Information Supplied by the Air-Conditioning, Heating, and Refrigeration Institute and Bradford White.
  • The Uniform Energy Factor Chart is subject to change without notice in accordance with our policy of continuous improvement.
  • The ratings documented on this chart are also listed at www.ahrinet.org and www.energystar.gov.
  • For FTC guide information, please visit www.ahrinet.org
More than 45 ENERGY STAR® models available

Like our AeroTherm® Heat Pump Water Heater, our Infiniti K Series tankless water heaters and our eF Series® gas water heaters and more – all designed to save energy and money. Many are eligible for state and local rebate programs – making them an even better choice.

See Product Rebates

30 Gallon Models

NAECA Compliant Models (After April 16th, 2015)

30 Gallon ModelsInsulationEstimated Yearly Cost*Uniform Energy FactorFirst Hour RatingLEED Point
RE130L1$2930.9242
RE230L62$2930.9242
RE230LN62$2930.9241
RE330S63$2930.9243

40 Gallon Models

NAECA Compliant Models (After April 16th, 2015)

40 Gallon ModelsInsulationEstimated Yearly Cost*Uniform Energy FactorFirst Hour RatingLEED Point
RE240L62$4190.91491
RE240LN62$2930.92451
RE240S62$4190.91481
RE340S63$4240.91491
RE340T63$4240.92531

50 Gallon Models

NAECA Compliant Models (After April 16th, 2015)

50 Gallon ModelsInsulationEstimated Yearly Cost*Uniform Energy FactorFirst Hour RatingLEED Point
RE250LNG2$4240.92611
RE250S62$4240.92601
RE350S63$4240.92601
RE350T63$4240.92641

LEED – Leadership in Energy and Environmental Design
LEED is a third-party, nationally accepted standard for green building design
* Calculated using the updated National Average Fuel Cost.
Information supplied by The Gas Appliance Manufacturers’ Association and Bradford White
The Uniform Energy Factor Chart is subject to change without notice in accordance with our policy of continuous improvement.
The ratings documented on this chart are also listed at www.AHRInet.org and www.energystar.gov

50 Gallon Models

50 Gallon ModelsInsulationEstimated Yearly Cost*Uniform Energy FactorFirst Hour RatingLEED Point
RE2H50S10 2$1153.39653

80 Gallon Models

80 Gallon ModelsInsulationEstimated Yearly Cost*Uniform Energy FactorFirst Hour RatingLEED Point
RE2H80T10 2$1713.48873

LEED – Leadership in Energy and Environmental Design
LEED is a third-party, nationally accepted standard for green building design
* Calculated using the updated National Average Fuel Cost.
Information supplied by The Gas Appliance Manufacturers’ Association and Bradford White
The Uniform Energy Factor Chart is subject to change without notice in accordance with our policy of continuous improvement.
The ratings documented on this chart are also listed at www.AHRInet.org and www.energystar.gov
ENERGY STAR Qualified

30 Gallon Models

30 Gallon Models

NAECA Compliant Models (After April 16th, 2015)

30 Gallon ModelsInsulationEstimated Yearly Cost*Uniform Energy FactorFirst Hour RatingLEED Point
RG1D30T6N1$2030.6053
RG230S6N2$1550.5449
RG230T6N2$2010.6060
RG2DVMH30T6N2$2010.6056
RG2MH30T6N2$1550.5450
URG230T6N2$2010.6060
RG130T6N1$2010.5446
URG130T6N1$1550.5446

40 Gallon Models

NAECA Compliant Models (After April 16th, 2015)

40 Gallon ModelsInsulationEstimated Yearly Cost*Uniform Energy FactorFirst Hour RatingLEED Point
RG1D40S6N1$2070.59671
RG1D40T6N1$2090.58651
RG140T6N1$2050.59641
RG1PV40S6N1$2080.61621
RG240S6N2$2080.58691
RG2PV40S6N 2$1890.67701
RG240T6N2$2880.64751
RG2D40S6N 2$1910.64621
RG2DV40S6N2$2010.60621
RG2DVMH40T6N2$2080.58511
RG2F40S6N 2$1920.64621
RG2MH40T6N2$2050.59541
RG2PDV40S6N 2$1950.64731
RG2PV40T6N 2$2800.68751
URG1D40S6N1$2640.62741
URG140T6N1$2050.59641
URG1PV40S6N1$2080.61621
URG240S6N2$2050.58691
URG240T6N2$2880.64751
URG2D40S6N 2$1900.64621
URG2DV40S6N2$2050.60621
URG2PDV40S6N 2$1910.64731
URG2PV40T6N 2$1930.68751

50 Gallon Models

NAECA Compliant Models (After April 16th, 2015)

50 Gallon ModelsInsulationEstimated Yearly Cost*Uniform Energy FactorFirst Hour RatingLEED Point
RG1D50T6N1$2960.6378
RG1PV50S6N1$3050.63771
RG250H6N2$2930.63106
LG250H653N2$2930.63106
RG250L6N2$2930.6377
RG250S6N2$2930.6375
RG250T6N2$2930.63811
RG2D50S6N 2$2730.68811
RG2DV50H6N2$2880.6496
RG2PV50S6N 2$2750.70751
LG2DV50H503N2$2880.6496
RG2DV50S6N2$2880.6477
RG2F50S6N 2$2760.68761
RG2PDV50H6N 2$2800.681031
LG2PDV50H603N2$2800.681031
RG2PDV50S6N 2$2820.68801
RG2PV50H6N 2$2780.681161
LG2PV50H653N2$2780.681161
RG2PV50T6N 2$1870.67711
URG1PV50S6N1$3050.63771
URG50H6N2$2880.60100
URG250H6N2$2880.64110
ULG250H553N2$2880.64110
URG250L6N2$2930.6377
URG250S6N2$2930.6375
URG250T6N2$2930.63811
URG2D50S6N 2$2730.68811
URG2DV50H6N2$2880.6483
ULG2DV50H453N2$2880.6483
URG2DV50S6N2$2930.6378
URG2PDV50H6N 2$2800.68821
ULG2PDV50H503N2$2800.68821
URG2PDV50S6N 2$2820.68801
URG2PV50H6N 2$2800.681071
ULG2PV50H563N2$2800.681071
ULG2PV50H603N2$2800.68991
URG2PV50T6N 2$1870.67711
RG150T6N1$2930.63751
URG150T6N1$2930.63751
LC2PV50H763N2$2330.80120
LG155H803N1$3020.61117
LG1PV55H783N1$3020.68125
RC2PV50H6N2$2330.80120
RG155H6N1$3020.61117
RG1PV55H6N1$3020.68125
55 Gallon Models

NAECA Compliant Models (After April 16th, 2015)

55 Gallon ModelsInsulationEstimated Yearly Cost*Uniform Energy FactorFirst Hour RatingLEED Point
RG255H*N2N/A0.61115
75 Gallon Models

NAECA Compliant Models (After April 16th, 2015)

75 Gallon ModelsInsulationEstimated Yearly Cost*Uniform Energy FactorFirst Hour RatingLEED Point
LG275H763N2$3130.59135
RG2PDV75H6N2$3130.69134
LG275H763N2$3130.59135
LG2PDV75H803N2$3130.69134
LG2PV75H763N2$3130.69121
RG2PV75H6N2$3130.69121
ULG275H763N2$3130.59135
ULG2PV75H763N2$3130.69121
URG275H6N2$3130.59135
URG2PV75H6N2$3130.69121

100 Gallon Models

NAECA Compliant Models (After April 16th, 2015)

100 Gallon ModelsInsulationEstimated Yearly Cost*Uniform Energy FactorFirst Hour RatingLEED Point
LG2100H853N2$3240.57157
RG2100H6N2$3240.57157
ULG2100H853N2$3240.57157
URG2100H6N2$3240.57157

LEED – Leadership in Energy and Environmental Design
LEED is a third-party, nationally accepted standard for green building design
**-478 Models have a 0.64 Uniform Energy Factor (ex: M-1-TW-40S6FBN-478).
* Calculated using the updated National Average Fuel Cost.
Information supplied by The Gas Appliance Manufacturers’ Association and Bradford White
The Uniform Energy Factor Chart is subject to change without notice in accordance with our policy of continuous improvement.
The ratings documented on this chart are also listed at www.AHRInet.org and www.energystar.gov
ENERGY STAR Qualified

30 Gallon Models

NAECA Compliant Models (After April 16th, 2015)

30 Gallon ModelsInsulationEstimated Yearly Cost*Uniform Energy FactorFirst Hour RatingLEED Point
RG1D30T6X1$4880.6053
RG230S6X2$4880.5449
RG230T6X2$4870.6060
RG2DVMH30T6X2$4870.6056
RG2MH30T6X2$4880.5450
RG130T6X1$4880.5446

40 Gallon Models

NAECA Compliant Models (After April 16th, 2015)

40 Gallon ModelsInsulationEstimated Yearly Cost*Uniform Energy FactorFirst Hour RatingLEED Point
RG1D40S6X1$4960.59671
RG1D40T6X1$5050.58651
RG1PV40S6X1$4830.61621
RG240S6X2$5040.58691
RG240T6X2$6980.64751
RG2D40S6X 2$4580.64621
RG2DV40S6X2$4870.60621
RG2DVMH40T6X2$5040.58511
RG2F40S6X 2$4580.64621
RG2MH40T6X2$4960.59541
RG2PDV40S6X 2$4590.64731
RG2PV40S6X 2$4400.67701
RG2PV40T6X 2$6600.68751
RG140T6X1$4960.5964

50 Gallon Models

NAECA Compliant Models (After April 16th, 2015)

50 Gallon ModelsInsulationEstimated Yearly Cost*Uniform Energy FactorFirst Hour RatingLEED Point
RG1D50T6X1$7100.6378
RG1PV50S6X1$7130.63771
RG250H6X2$7090.63106
LG250H653X2$7090.63106
RG250L6X2$7090.6377
RG250S6X2$7090.6375
RG250T6X2$7090.63811
RG2D50S6X 2$658$6490.68811
RG2DV50H6X2$6980.6496
LG2DV50H503X2$6980.6496
RG2DV50S6X2$6980.6477
RG2F50S6X 2$6580.68761
RG2PDV50H6X 2$6600.681031
LG2PDV50H603X2$6600.681031
RG2PDV50S6X 2$6610.68801
RG2PV50H6X 2$6590.681161
LG2PV50H653X2$6590.681161
RG2PV50T6X 2$4390.67711
RG2PV50S6X 2$6420.70751
RG150T6X1$7090.6375
LC2PV50H763X2$5650.80120
LG255H783X1$7310.61117
LG1PV55H783X1$7310.68125
RC2PV50H6X2$5650.80120
RG155H6X1$7310.61115
RG1PV55H6X1$7310.68125
55 Gallon Models

NAECA Compliant Models (After April 16th, 2015)

55 Gallon ModelsInsulationEstimated Yearly Cost*Uniform Energy FactorFirst Hour RatingLEED Point
RG255H*NN/AN/A0.61115

75 Gallon Models

NAECA Compliant Models (After April 16th, 2015)

75 Gallon ModelsInsulationEstimated Yearly Cost*Uniform Energy FactorFirst Hour RatingLEED Point
LG275H763X2$7570.59135
LG2PDV75H803X2$7570.69134
LG2PV75H763X2$7570.69121
RG275H6X2$7570.59135
RG2PDV75H6X2$7570.69134
RG2PV75H6X2$7570.69121

100 Gallon Models

NAECA Compliant Models (After April 16th, 2015)

100 Gallon ModelsInsulationEstimated Yearly Cost*Uniform Energy FactorFirst Hour RatingLEED Point
LG2100H853X2$7840.57157
RG2100H6X2$7840.57157

LEED – Leadership in Energy and Environmental Design
LEED is a third-party, nationally accepted standard for green building design
**-478 Models have a 0.64 Uniform Energy Factor (ex: M-1-TW-40S6FBN-478).
* Calculated using the updated National Average Fuel Cost.
Information supplied by The Gas Appliance Manufacturers’ Association and Bradford White
The Uniform Energy Factor Chart is subject to change without notice in accordance with our policy of continuous improvement.
The ratings documented on this chart are also listed at www.AHRInet.org and www.energystar.gov
ENERGY STAR Qualified

Natural Gas

Models (Natural Gas)Estimated Yearly Cost*Uniform Energy FactorLEED Point
RTG199HE-N $2010.922
RTG199ME-N
$231
0.822

L.P. Gas

Models (Propane Gas)Estimated Yearly Cost*Uniform Energy FactorLEED Point
RTG199HE-X $4860.922
RTG199ME-X $5450.822

* Use “I” for Indoor models and use “E” for Outdoor models.
LEED – Leadership in Energy and Environmental Design
LEED is a third-party, nationally accepted standard for green building design
* Calculated using the updated National Average Fuel Cost.
Information supplied by The Gas Appliance Manufacturers’ Association and Bradford White
The Uniform Energy Factor Chart is subject to change without notice in accordance with our policy of continuous improvement.
The ratings documented on this chart are also listed at www.AHRInet.org and www.energystar.gov
ENERGY STAR Qualified

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