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

 

30 Gallon Models

NAECA Compliant Models
(After April 16th, 2015)
30 Gallon Models Insulation R-Value Estimated Yearly Cost* Uniform Energy Factor First Hour Rating LEED Point
RE130L 1 8 $293             0.92 42
RE230L6 2 16 $293             0.92 46
RE230LN6 2 16 $293             0.92 41
RE330S6 3 24 $293             0.92 47

40 Gallon Models

NAECA Compliant Models
(After April 16th, 2015)
40 Gallon Models Insulation R-Value Estimated Yearly Cost* Uniform Energy Factor First Hour Rating LEED Point
RE240L6 2 16 $419             0.93 54 1
RE240LN6 2 16 $293             0.92 45 1
RE240S6 2 16 $419             0.93 54 1
RE340S6 3 24 $419             0.93 54 1
RE340T6 3 24 $419             0.93 55 1

50 Gallon Models

NAECA Compliant Models
(After April 16th, 2015)
50 Gallon Models Insulation R-Value Estimated Yearly Cost* Uniform Energy Factor First Hour Rating LEED Point
RE250L6 2 16 $419             0.93 61 1
RE250S6 2 16 $419             0.93 63 1
RE350S6 3 24 $419             0.93 63 1
RE350T6 3 24 $419             0.93 63 1


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 Models Insulation R-Value Estimated Yearly Cost* Uniform Energy Factor First Hour Rating LEED Point
RE2H50R10B 2 16 $120             3.24 64 3

80 Gallon Models

80 Gallon Models Insulation R-Value Estimated Yearly Cost* Uniform Energy Factor First Hour Rating LEED Point
RE2H80R10B 2 16 $183             3.25 89 3


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

NAECA Compliant Models
(After April 16th, 2015)
30 Gallon Models Insulation R-Value Estimated Yearly Cost* Uniform Energy Factor First Hour Rating LEED Point
RG1D30T6N 1 8 $196             0.62 59
RG230S6N 2 16 $202             0.60 57
RG230T6N 2 16 $198             0.61 59
RG2DVMH30T6N 2 16 $202             0.60 53
RG2MH30T6N 2 16 $202             0.60 56
URG230T6N 2 16 $198             0.61 63
RG130T6N 1 8 $202             0.60 53
URG130T6N 1 8 $202             0.60 59

40 Gallon Models

NAECA Compliant Models
(After April 16th, 2015)
40 Gallon Models Insulation R-Value Estimated Yearly Cost* Uniform Energy Factor First Hour Rating LEED Point
RG1D40S6N 1 8 $208             0.59 73 1
RG1D40T6N 1 8 $206             0.59 74 1
RG140T6N 1 8 $205             0.59 69 1
RG1PV40S6N 1 8 $208             0.63 71 1
RG240S6N 2 16 $205             0.59 73 1
RG2PV40S6N 2 16 $192             0.67 70 1
RG240T6N 2 16 $205             0.59 74 1
RG2D40S6N 2 16 $189             0.65 71 1
RG2DV40S6N 2 16 $205             0.59 72 1
RG2DVMH40T6N 2 16 $205             0.59 60 1
RG2F40S6N 2 16 $183             0.68 69 1
RG2MH40T6N 2 16 $202             0.60 58 1
RG2PDV40S6N 2 16 $187             0.68 71 1
RG2PV40T6N 2 16 $190             0.68 71 1
URG1D40S6N 1 8 $264             0.62 74 1
URG140T6N 1 8 $205             0.59 71 1
URG1PV40S6N 1 8 $208             0.63 72 1
URG240S6N 2 16 $205             0.59 73 1
URG240T6N 2 16 $288             0.64 75 1
URG2D40S6N 2 16 $190             0.64 70 1
URG2DV40S6N 2 16 $205             0.59 73 1
URG2PDV40S6N 2 16 $191             0.67 72 1
URG2PV40T6N 2 16 $193             0.67 72 1

50 Gallon Models

NAECA Compliant Models
(After April 16th, 2015)
50 Gallon Models Insulation R-Value Estimated Yearly Cost* Uniform Energy Factor First Hour Rating LEED Point
RG1D50T6N 1 8 $298             0.63 86
RG1PV50S6N 1 8 $292             0.67 83 1
RG250H6N 2 16 $293             0.63 104
LG250H653N 2 16 $293             0.63 104
RG250L6N 2 16 $293             0.63 85
RG250S6N 2 16 $293             0.63 89
RG250T6N 2 16 $283             0.65 86 1
RG2D50S6N 2 16 $270             0.69 83 1
RG2DV50H6N 2 16 $293             0.63 89
RG2PV50S6N 2 16 $281             0.70 75 1
LG2DV50H503N 2 16 $293             0.63 89
RG2DV50S6N 2 16 $293             0.63 85
RG2F50S6N 2 16 $267             0.71 81 1
RG2PDV50H6N 2 16 $280             0.69 95 1
LG2PDV50H603N 2 16 $280             0.69 95 1
RG2PDV50S6N 2 16 $275             0.71 83 1
RG2PV50H6N 2 16 $269             0.71 106 1
LG2PV50H653N 2 16 $269             0.71 106 1
RG2PV50T6N 2 16 $269             0.71 83 1
URG1PV50S6N 1 8 $292             0.67 81 1
URG50H6N 2 16 $273             0.60 100
URG250H6N 2 16 $293             0.63 90
ULG250H553N 2 16 $293             0.63 90
URG250L6N 2 16 $293             0.63 83
URG250S6N 2 16 $293             0.63 86
URG250T6N 2 16 $288             0.64 83 1
URG2D50S6N 2 16 $272             0.68 79 1
URG2DV50H6N 2 16 $293             0.63 83
ULG2DV50H453N 2 16 $293             0.63 83
URG2DV50S6N 2 16 $293             0.63 80
URG2PDV50H6N 2 16 $285             0.68 85 1
ULG2PDV50H503N 2 16 $285             0.68 85 1
URG2PDV50S6N 2 16 $280             0.70 81 1
URG2PV50H6N 2 16 $276             0.70 90 1
ULG2PV50H563N 2 16 $276             0.70 90 1
ULG2PV50H603N 2 16 $234             0.70 99 1
URG2PV50T6N 2 16 $278             0.70 81 1
RG150T6N 1 8 $293             0.63 80 1
URG150T6N 1 8 $293             0.63 79 1
LC2PV50H763N 2 16 $233             0.79 131
LG155H803N 1 8 $302             0.61 117
LG1PV55H783N 1 8 $302             0.61 118
RC2PV50H6N 2 16 $233             0.79 131
RG155H6N 1 8 $302             0.61 117
RG1PV55H6N 1 8 $302             0.61 117

75 Gallon Models

NAECA Compliant Models
(After April 16th, 2015)
75 Gallon Models Insulation R-Value Estimated Yearly Cost* Uniform Energy Factor First Hour Rating LEED Point
LG275H763N 2 16 $313             0.59 126
RG2PDV75H6N 2 16 $313             0.59 126
LG275H763N 2 16 $313             0.59 126
LG2PDV75H803N 2 16 $313             0.59 126
LG2PV75H763N 2 16 $313             0.59 126
RG2PV75H6N 2 16 $313             0.59 126
ULG275H763N 2 16 $313             0.59 126
ULG2PV75H763N 2 16 $313             0.59 126
URG275H6N 2 16 $313             0.59 126
URG2PV75H6N 2 16 $313             0.59 126

100 Gallon Models

<
NAECA Compliant Models
(After April 16th, 2015)
100 Gallon Models Insulation R-Value Estimated Yearly Cost* Uniform Energy Factor First Hour Rating LEED Point
LG2100H853N 2 16 $324             0.57 137
RG2100H6N 2 16 $324             0.57 137
ULG2100H853N 2 16 $324             0.57 137
URG2100H6N 2 16 $324             0.57 137

 

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 Models Insulation R-Value Estimated Yearly Cost* Uniform Energy Factor First Hour Rating LEED Point
RG1D30T6X 1 8 $474             0.62 59
RG230S6X 2 16 $488             0.60 57
RG230T6X 2 16 $480             0.61 59
RG2DVMH30T6X 2 16 $488             0.60 53
RG2MH30T6X 2 16 $488             0.60 56
RG130T6X 1 8 $488             0.60 53

40 Gallon Models

NAECA Compliant Models
(After April 16th, 2015)
40 Gallon Models Insulation R-Value Estimated Yearly Cost* Uniform Energy Factor First Hour Rating LEED Point
RG1D40S6X 1 8 $499             0.59 73 1
RG1D40T6X 1 8 $497             0.59 74 1
RG1PV40S6X 1 8 $480             0.63 71 1
RG240S6X 2 16 $496             0.59 73 1
RG240T6X 2 16 $496             0.59 74 1
RG2D40S6X 2 16 $454             0.65 71 1
RG2DV40S6X 2 16 $496             0.59 72 1
RG2DVMH40T6X 2 16 $496             0.59 60 1
RG2F40S6X 2 16 $435             0.68 69 1
RG2MH40T6X 2 16 $488             0.60 58 1
RG2PDV40S6X 2 16 $439             0.68 71 1
RG2PV40S6X 2 16 $448             0.67 70 1
RG2PV40T6X 2 16 $443             0.68 71 1
RG140T6X 1 8 $496             0.59 69

50 Gallon Models

NAECA Compliant Models
(After April 16th, 2015)
50 Gallon Models Insulation R-Value Estimated Yearly Cost* Uniform Energy Factor First Hour Rating LEED Point
RG1D50T6X 1 8 $715             0.63 86
RG1PV50S6X 1 8 $683             0.67 83 1
RG250H6X 2 16 $710             0.63 104
LG250H653X 2 16 $710             0.63 104
RG250L6X 2 16 $710             0.63 85
RG250S6X 2 16 $710             0.63 89
RG250T6X 2 16 $686             0.65 86 1
RG2D50S6X 2 16 $649             0.69 83 1
RG2DV50H6X 2 16 $710             0.63 89
LG2DV50H503X 2 16 $710             0.63 89
RG2DV50S6X 2 16 $710             0.63 85
RG2F50S6X 2 16 $636             0.71 81 1
RG2PDV50H6X 2 16 $660             0.69 95 1
LG2PDV50H603X 2 16 $660             0.69 95 1
RG2PDV50S6X 2 16 $644             0.71 83 1
RG2PV50H6X 2 16 $638             0.71 106 1
LG2PV50H653X 2 16 $638             0.71 106 1
RG2PV50T6X 2 16 $637             0.71 83 1
RG2PV50S6X 2 16 $656             0.70 75 1
RG150T6X 1 8 $710             0.63 80
LC2PV50H763X 2 16 $565             0.79 131
LG155H803X 1 8 $731             0.61 117
LG1PV55H783X 1 8 $731             0.61 117
RC2PV50H6X 2 16 $565             0.79 131
RG155H6X 1 8 $731             0.61 117
RG1PV55H6X 1 8 $731             0.61 117

75 Gallon Models

NAECA Compliant Models
(After April 16th, 2015)
75 Gallon Models Insulation R-Value Estimated Yearly Cost* Uniform Energy Factor First Hour Rating LEED Point
LG275H763X 2 16 $757             0.59 126
LG2PDV75H803X 2 16 $757             0.59 126
LG2PV75H763X 2 16 $757             0.59 126
RG275H6X 2 16 $757             0.59 126
RG2PDV75H6X 2 16 $757             0.59 126
RG2PV75H6X 2 16 $757             0.59 126

100 Gallon Models

NAECA Compliant Models
(After April 16th, 2015)
100 Gallon Models Insulation R-Value Estimated Yearly Cost* Uniform Energy Factor First Hour Rating LEED Point
LG2100H853X 2 16 $784             0.57 137
RG2100H6X 2 16 $784             0.57 137

 

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 Factor LEED Point
RTG-199HE-N $201 0.91 2
RTG-199ME-N $231 0.84 2

L.P. Gas

Models (Propane Gas) Estimated Yearly Cost* Uniform Energy Factor LEED Point
RTG-199HE-X $486 0.91 2
RTG-199ME-X $558 0.84 2

 

* 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