waterheaterspecs

Heater finder

Narrow the 1,138 certified model numbers by type, rated volume and first-hour rating or flow, then tick up to three rating sets to put them side by side. Every value is the DOE test figure from the ENERGY STAR list.

Type of water heater
Rated volume gal

Showing 101 rating sets, 609 model numbers

Heat pump, any size · sorted by UEF · certified models only, as of October 27, 2026. A rating set groups model numbers with identical certified values.

  1. Heat pump, 240 V · high draw · 1 model number

    Show 1 model number, 1 brand
    • GE Profile PH50S10BNY01
    Rated volume
    50 gal
    First-hour rating
    75 gal
    UEF
    4.50
    Energy
    1,102 kWh/yr
  2. Heat pump, 240 V · high draw · 1 model number

    Show 1 model number, 1 brand
    • GE Profile PH80S10BNY01
    Rated volume
    80 gal
    First-hour rating
    101 gal
    UEF
    4.50
    Energy
    1,102 kWh/yr
  3. Heat pump, 240 V · high draw · 1 model number

    Show 1 model number, 1 brand
    • GE Profile PH80S10BPY01
    Rated volume
    80 gal
    First-hour rating
    101 gal
    UEF
    4.40
    Energy
    1,127 kWh/yr
  4. Heat pump, 240 V · high draw · 1 model number

    Show 1 model number, 1 brand
    • GE Profile PH50S10BPY01
    Rated volume
    50 gal
    First-hour rating
    77 gal
    UEF
    4.30
    Energy
    1,154 kWh/yr
  5. Heat pump, 240 V · high draw · 1 model number

    Show 1 model number, 1 brand
    • GE Profile PH65S10BNY01
    Rated volume
    65 gal
    First-hour rating
    86 gal
    UEF
    4.30
    Energy
    1,154 kWh/yr
  6. Heat pump, 240 V · high draw · 1 model number

    Show 1 model number, 1 brand
    • GE Profile PH65S10BPY01
    Rated volume
    65 gal
    First-hour rating
    87 gal
    UEF
    4.30
    Energy
    1,154 kWh/yr
  7. Heat pump, split system · medium draw · 1 model number

    Show 1 model number, 1 brand
    • Eco-Logical OMNI-50HP2-1A
    Rated volume
    46 gal
    First-hour rating
    57 gal
    UEF
    4.23
    Energy
    769 kWh/yr
  8. Heat pump, 240 V · high draw · 2 model numbers

    Show 2 model numbers, 2 brands
    • Bradford White RE2HP65**-1NCTT
    • Jetglas RE2HP65*-1NCTT
    Rated volume
    65 gal
    First-hour rating
    82 gal
    UEF
    4.20
    Energy
    1,181 kWh/yr
  9. Heat pump, 240 V · medium draw · 1 model number

    Show 1 model number, 1 brand
    • GE Profile PH40S10BPY01
    Rated volume
    40 gal
    First-hour rating
    64 gal
    UEF
    4.20
    Energy
    773 kWh/yr
  10. Heat pump, 240 V · high draw · 3 model numbers

    Show 3 model numbers, 1 brand
    • LG APHWC502D, APHWC502L, APHWC502M
    Rated volume
    53 gal
    First-hour rating
    81 gal
    UEF
    4.20
    Energy
    1,181 kWh/yr
See the heat-pump overview

Side by side

Three contrasting heat-pump sets: the highest UEF at the high draw pattern, the largest family, and a 120 V plug-in unit. Tick other sets in the list to replace them.

Selected rating sets side by side
MeasureAGE Profile PH80S10BNY01BGiant GTHPCO-45 1+GTXST-50S 1CRheem PROPH80 T0 RH120-M
TypeHeat pump, 240 V · high drawHeat pump, split system · medium drawHeat pump, 120 V plug-in · high draw
Rated volume80 gal46 gal72 gal
First-hour rating101 gal70 gal84 gal
UEF4.503.523.46
UEF rankhighest of 58, tied with 1high-draw heat-pump sets23rd highest of 38, tied with 1medium-draw heat-pump sets49th highest of 58high-draw heat-pump sets
Annual energy, DOE test1,102 kWh/yr923 kWh/yr1,403 kWh/yr
Tank height57.2 in46.6 in57.8 in / 74.2 in
Tank diameter21.5 in18 in20 in / 24.3 in
Listed by partnerGE Appliances, a Haier CompanyA.O. Smith CorporationRheem Sales Company, Inc.
Model numbers12510
First-hour rating vs A–−31 gal−17 gal
UEF vs A–not comparable−1.04
Energy vs A–not comparable+301 kWh/yr
  • UEFs from different draw patterns are not directly comparable. How draw patterns work.
  • Annual energy is only compared within one draw pattern and one unit (kWh or therms).

How to use

Pick a type first: the other fields change with it, because tanks are rated by first-hour output and tankless units by flow. Leave a field empty to keep every value. The address bar keeps your filters, so a link to this page reopens the same list.

Ticking a box adds the set to the comparison; the first ticked set is A, and the difference rows measure B and C against it. Nothing here is a recommendation: the tool filters and compares certified test values only.

What the numbers mean

First-hour rating
Gallons of hot water a full tank delivers in one hour of the DOE test.
Max flow at a 67 °F rise
Gallons per minute a tankless unit sustains while heating 58 °F water to 125 °F.
UEF
Uniform Energy Factor: delivered hot-water energy divided by energy used over the 24-hour test. Compare it only within one draw pattern.
Draw pattern
The DOE usage profile (very small, low, medium, high) the model was tested at, assigned from its first-hour rating or flow.

How the data is prepared