The Energy Factor

The Energy Factor of a water heater refers to its efficiency when run under standardized conditions for a 24-hour period. Expressed as a decimal, the Energy Factor is determined by running a Department of Energy specified simulated use test. When compared to standard products of the same fuel type, a water heater with a higher Energy Factor rating uses less energy, resulting in both energy and monetary savings.

First Hour Rating

The First Hour Rating (FHR) in gallons, is determined by running a Department of Energy specified test with the average water temperature in the tank set to 135°F (+/- 5°F). A draw of three gallons per minute starts and then discontinues once the hot water outlet temperature drops 25°F. The water heater is then allowed to recover back to the 135°F setting 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 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 Capacity Models

30 Gallon Capacity Models Insulation R Value Estimated Yearly Cost* Energy Factor First Hour Rating LEED Point
M230R6DS 2 16 $567            .93 50 1
M230L6DS 2 16 $561            .94 47 1
M130L6DS 1 8 $567            .93 47 1
M230U6SS 2 16 $567            .93 19 1
M2WH30L6SS 2 16 $567            .93 19 1

40 Gallon Capacity Models

40 Gallon Capacity Models Insulation R Value Estimated Yearly Cost* Energy Factor First Hour Rating LEED Point
M240S6DS 2 16 $573            .92 56 /
M240T6DS 2 16 $573            .92 56 /
M2HE40S6DS 2 16 $567            .93 57 1
M240L6DS 2 16 $567            .93 58 1
M140L6DS 1 8 $573            .92 58 /

50 Gallon Capacity Models

50 Gallon Capacity Models Insulation R Value Estimated Yearly Cost* Energy Factor First Hour Rating LEED Point
M250S6DS 2 16 $573            .92 67 1
M250T6DS 2 16 $585            .90 67 /
M2HE50S6DS 2 16 $567            .93 67 1
M250L6DS 2 16 $579            .91 67 /
M150L6DS 1 8 $585            .90 67 /

65 Gallon Capacity Models

65 Gallon Capacity Models Insulation R Value Estimated Yearly Cost* Energy Factor First Hour Rating LEED Point
M265R6DS 2 16 $592            .89 77 /
M2HE65R6DS 2 16 $579            .91 77 /

80 Gallon Capacity Models

80 Gallon Capacity Models Insulation R Value Estimated Yearly Cost* Energy Factor First Hour Rating LEED Point
M280R6DS 2 16 $599            .88 92 /
M2HE80R6DS 2 16 $579            .91 92 1

120 Gallon Capacity Models

120 Gallon Capacity Models Insulation R Value Estimated Yearly Cost* Energy Factor First Hour Rating LEED Point
M2120R6DS 2 16 $620              .85 118 /

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 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

Last Revised November 13, 2013

50 Gallon Capacity Model

50 Gallon Capacity Model Insulation R Value Estimated Yearly Cost* Energy Factor First Hour Rating LEED Point
RE2H50R10 2 16 $220            2.4 65 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 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

Last Revised November 13, 2013

30 Gallon Capacity Models

30 Gallon Capacity Models Insulation R Value Estimated Yearly Cost* Energy Factor First Hour Rating LEED Point
MI30T6FBN 1 8 $268               .61 58 1
U130T6FRN 1 8 $268               .61 56 1
MI30S6FBN 1 8 $268               .61 56 1
U130S6FRN 1 8 $268               .61 54 1
MI303T6FBN 1 8 $268               .61 68 1
M430T6FBN 2 16 $263               .62 58 1
U430T6FRN 2 16 $263               .62 56 1
MIMS30T6LN 1 8 $268               .61 52 1
MIMH30T6FLN 1 8 $268               .61 56 1

40 Gallon Capacity Models

40 Gallon Capacity Models Insulation R Value Estimated Yearly Cost* Energy Factor First Hour Rating LEED Point
MI40T6FBN 1 8 $277             .59 76 /
U140T6FRN 1 8 $277             .59 77 /
MI403S6FBN 1 8 $277             .59 74 /
U1403S6FRN 1 8 $277             .59 72 /
MI404T6FBN 1 8 $277             .59 87 /
U1404T6FRN 1 8 $282             .59 86 /
M440T6FBN 2 16 $263             .62 76 1
HE440S6FBN 2 16 $233             .70 70 1
D4403S6FBN 2 16 $244             .67 72 1
U440T6FRN 2 16 $263            .62 77 1
M4403S6FBN 2 16 $263            .62 74 1
U4403S6FRN 2 16 $263            .62 72 1
M1XR403S6FBN 1 8 $277            .59 74 /
U1XR403S6FRN 1 8 $277            .59 72 /
DS140S6FBN 1 8 $277            .59 73 /
UDS140S6FRN 1 8 $277            .59 73 /
MIMS40T6LN 1 8 $277            .59 59 /
MIMH40T6FLN 1 8 $277            .59 59 /
M1TW40S6FBN** 1 8 $259            .63 72 1
M4TW40T6FBN 2 16 $244            .67 72 1
U1TW40S6FRN 1 8 $259            .63 72 1
U4TW40T6FRN 2 16 $244            .67 72 1
PDX140S6FBN 1 8 $255            .62 72 1
PDX440S6FBN 2 16 $244            .67 70 1

50 Gallon Capacity Models

50 Gallon Capacity Models Insulation R Value Estimated Yearly Cost* Energy Factor First Hour Rating LEED Point
MI5036FBN 1 8 $282            .58 89 /
U15036FRN 1 8 $282            .58 90 /
MI50L6FBN 1 8 $282            .58 88 /
U150L6FRN 1 8 $282            .58 86 /
MI504S6FBN 1 8 $282            .58 93 /
U1504S6FRN 1 8 $282            .58 92 /
M45036FBN 2 16 $264            .62 89 1
HE450S6FBN 2 16 $233            .70 84 1
D4504S6FBN 2 16 $244            .67 86 1
U45036FRN 2 16 $264            .62 90 1
M2XR504T6FBN 2 16 $277            .59 103 /
U2XR504T6FRN 2 16 $282            .59 91 /
DS150S6FBN 1 8 $282            .58 90 /
UDS150S6FRN 1 8 $282            .58 84 /
DH1504T6FBN 1 8 $282            .58 93 /
UDH1504T6FRN 1 8 $282            .58 88 /
M1TW50S6FBN** 1 8 $259            .63 86 1
M4TW50T6FBN** 2 16 $244            .67 86 1
M2TW50T6FBN 2 16 $247            .66 108 1
M4XRTW50T6FBN 2 16 $244            .67 108 1
U1TW50S6FRN 1 8 $259            .63 86 1
U4TW50T6FRN 2 16 $244            .67 86 1
U2TW50T6FRN 2 16 $247            .66 101 1
U4XRTW50T6FRN 2 16 $244            .67 99 1
PDX150S6FBN 1 8 $255            .62 88 1
PDX250T6FBN 2 16 $263            .62 105 1
PDX450S6FBN 2 16 $244            .67 85 1
UPDX250T6FRN 2 16 $263            .62 92 1

60 Gallon Capacity Models

60 Gallon Capacity Models Insulation R Value Estimated Yearly Cost* Energy Factor First Hour Rating LEED Point
MI60T6FBN 1 8 $292           .56 101 /
U160T6FRN 1 8 $292           .56 96 /
M460T6FBN 2 16 $277           .59 101 1
U460T6FRN 2 16 $277           .59 96 1
M1TW60T6FBN 1 8 $263           .62 100 1
M4TW60T6FBN 2 16 $244           .67 98 1
U1TW60T6FRN 1 8 $263           .62 100 1
U4TW60T6FRN 2 16 $244           .67 98 1

65 Gallon Capacity Models

65 Gallon Capacity Models Insulation R Value Estimated Yearly Cost* Energy Factor First Hour Rating LEED Point
M2XR65T6FBN 2 16 $297           .55 127 /
U2XR65T6FRN 2 16 $297           .55 116 /
DH165T6FBN 1 8 $297           .55 113 /
UDH165T6FRN 1 8 $297           .55 101 /
M2TW65T6FBN 2 16 $263           .66 126 1
M4XRTW65T6FBN 2 16 $244           .67 126 1
U2TW65T6FRN 2 16 $247           .66 120 1
U4XRTW65T6FRN 2 16 $244           .67 110 1
PDX265T6FBN 2 16 $272           .60 120 1
UPDX265T6FRN 2 16 $272           .60 106 1

75 Gallon Capacity Models

75 Gallon Capacity Models Insulation R Value Estimated Yearly Cost* Energy Factor First Hour Rating LEED Point
PDX275T6FBN 2 16 $277           .59 140 1
UPDX275T6FRN 2 16 $277           .59 122 1
DH175S6FBN 1 8 $308           .53 125 /
UDH175S6FRN 1 8 $308           .53 110 /

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 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 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

Last Revised April 1, 2014

30 Gallon Capacity Models

30 Gallon Capacity Models Insulation R Value Estimated Yearly Cost* Energy Factor First Hour Rating LEED Point
MI30T6FCX/SX 1 8 $648          .61            58 1
MI30S6FCX/SX 1 8 $648          .61            56 1
MI303T6FCX/SX 1 8 $648          .61            68 1
M430T6FCX/SX 2 16 $638          .62            58 1
MIMS30T6LX 1 8 $648          .61            52 1
MIMH30T6FLX 1 8 $648          .61            56 1

40 Gallon Capacity Models

40 Gallon Capacity Models Insulation R Value Estimated Yearly Cost* Energy Factor First Hour Rating LEED Point
MI40T6FCX/SX 1 8 $670            .59            76 /
MI403S6FCX/SX 1 8 $670            .59            74 /
MI404T6FCX/SX 1 8 $670            .59            87 /
M440T6FCX/SX 2 16 $638            .62            76 1
M4403S6FCX/SX 2 16 $638            .62            74 1
HE440S6FSX 2 16 $565            .70            70 1
D4403S6FSX 2 16 $590            .67            72 1
M1XR403S6FCX/SX 1 8 $670            .59            74 /
DS140S6FCX/SX 1 8 $670            .59            73 /
MIMS40T6LX 1 8 $670            .59            59 /
MIMH40T6FLX 1 8 $670            .59            60 /
M1TW40S6FCX/SX** 1 8 $628            .63            72 1
M4TW40T6FSX 2 16 $590            .67            72 1
PDX140S6FSX 1 8 $618            .62            72 1
PDX440S6FSX 2 16 $590            .67            70 1

50 Gallon Capacity Models

50 Gallon Capacity Models Insulation R Value Estimated Yearly Cost* Energy Factor First Hour Rating LEED Point
MI5036FCX/SX 1 8 $682            .58 89 /
MI50L6FCX/SX 1 8 $682            .58 88 /
MI504S6FCX/SX 1 8 $682            .58 93 /
M45036FCX/SX 2 16 $639            .62 89 1
HE450S6FSX 2 16 $565            .70 84 1
D4504S6FSX 2 16 $590            .67 86 1
M2XR504T6FCX/SX 2 16 $670            .59 103 /
DS150S6FCX/SX 1 8 $682            .58 90 /
DH1504T6FCX/SX 1 8 $682            .58 93 /
M1TW50S6FCX/SX** 1 8 $628            .63 86 1
M4TW50T6FSX 2 16 $590            .67 86 1
M2TW50T6FCX/SX 2 16 $599            .66 108 1
M4XRTW50T6FSX 2 16 $590            .67 108 1
PDX250T6FSX 2 16 $638            .62 105 1
PDX150S6FSX 1 8 $618            .62 88 1
PDX450S6FSX 2 16 $590            .67 85 1

60 Gallon Capacity Models

60 Gallon Capacity Models Insulation R Value Estimated Yearly Cost* Energy Factor First Hour Rating LEED Point
MI60T6FCX/SX 1 8 $706            .56            101 /
M460T6FCX/SX 2 16 $670            .59            101 1
M1TW60T6FCX/SX 1 8 $638            .62            100 1
M4TW60T6FSX 2 16 $590            .67            98 1

65 Gallon Capacity Models

65 Gallon Capacity Models Insulation R Value Estimated Yearly Cost* Energy Factor First Hour Rating LEED Point
M2XR65T6FCX/SX 2 16 $719            .55 127 /
DH165T6FCX/SX 1 8 $719            .55 113 /  
M2TW65T6FCX/SX 2 16 $599            .66 126 1
M4XRTW65T6FSX 2 16 $590            .67 120 1
PDX265T6FCX/SX 2 16 $659            .60 120 1

75 Gallon Capacity Models

75 Gallon Capacity Models Insulation R Value Estimated Yearly Cost* Energy Factor First Hour Rating LEED Point
PDX275T6FCX/SX 2 16 $670            .59 140 1
DH175S6FCX/SX 1 8 $746            .53 125 /

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 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 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

Last Revised April 1, 2014

Natural Gas

Models (Natural Gas) Estimated Yearly Cost* Energy Factor LEED Points
RTG-199HE
$172                     
.95 2
RTG-199ME
$196                     
.83 2
TGHE-160*-N
$190                     
.96 2
TGHE-199*-N
$194                     
.94 2
TG-150*-N
$223                     
.82 2
TG-180*-N
$223                     
.82 2
TG-199*-N
$223                     
.82 2
IGI-180R-10N -Discontinued
$225                     
.81 2
IGE-199R-10N - Discontinued
$225                     
.82 2

L.P. Gas

Models (L.P. Gas) Estimated Yearly Cost* Energy Factor LEED Points
RTG-199HE
$172           
.95 2
RTG-199ME
$196           
.83 2
TGHE-160*-X
$320           
.96 2
TGHE-199*-X
$326           
.94 2
TG-150*-X
$342           
.82 2
TG-180*-X
$374           
.82 2
TG-199*-X
$374           
.82 2
IGI-180R-10X - Discontinued
$322           
.81 2
IGE-199R-10X - Discontinued
$333           
.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 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

Last Revised August 31, 2009