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708 certified models

Commercial water heaters

Commercial water heaters certified under ENERGY STAR, with fuel, storage volume, input rate and thermal efficiency.

grayscale photo of metal pipe
Photo by Peter Herrmann on Unsplash

Certified models

708

Makers

26

Types

4

most are gas storage

Latest certification

Aug 2026

By type

  • Gas Storage 393
  • Gas Tankless 207
  • Electric Heat Pump 65
  • Gas Storage-type Instantaneous 43

By maker

Commercial water heaters by brand

Highest thermal efficiency

ModelTypeFuelStorageInput rate
Lochinvar AWH0400N SERIES 1**Gas TanklessGas4 gal399 kBtu/h
Lochinvar AWH0500L SERIES 1**Gas TanklessPropane5 gal500 kBtu/h
Lochinvar AWH0400L SERIES 1**Gas TanklessPropane4 gal399 kBtu/h
Lochinvar AWH0500N SERIES 1**Gas TanklessGas5 gal500 kBtu/h
A. O. Smith PWH0500NP*Gas TanklessGas, Propane5 gal500 kBtu/h
A. O. Smith PWH0400NP*Gas TanklessGas, Propane4 gal399 kBtu/h
Laars NT2V1500Gas TanklessGas11 gal1,500 kBtu/h
Bradford White BNT2V1500Gas TanklessGas11 gal1,500 kBtu/h
Rinnai RCW1000ANGas TanklessGas, Propane8 gal999 kBtu/h
BOCK OT300*2-***Gas StorageGas, Propane119 gal300 kBtu/h
BOCK OT300*2-A-***Gas StorageGas, Propane125 gal300 kBtu/h
Rheem GHE80SU-130Gas StorageGas, Propane80 gal130 kBtu/h
Ruud GHE80SU-130Gas StorageGas, Propane80 gal130 kBtu/h
Richmond GHE80SU-130Gas StorageGas, Propane80 gal130 kBtu/h
Rheem GHE80SU-130AGas StorageGas, Propane80 gal130 kBtu/h

New

Most recently certified

ModelTypeFuelStorageInput rate
BOCK OT900*-AGas Storage-type InstantaneousGas, Propane130 gal900 kBtu/h
BOCK OT800*-AGas Storage-type InstantaneousGas, Propane130 gal800 kBtu/h
BOCK OT700*-AGas Storage-type InstantaneousGas, Propane130 gal700 kBtu/h
BOCK OT600*-AGas Storage-type InstantaneousGas, Propane130 gal600 kBtu/h
A. O. Smith BTHS 1000A 1**Gas Storage-type InstantaneousGas, Propane120 gal1,000 kBtu/h
A. O. Smith BTHS 750A 1**Gas Storage-type InstantaneousGas, Propane120 gal750 kBtu/h
State SUS 120 750NEA 1**Gas Storage-type InstantaneousGas120 gal750 kBtu/h
State SUS 120 750PEA 1**Gas Storage-type InstantaneousPropane120 gal750 kBtu/h
State SUS 120 1000PEA 1**Gas Storage-type InstantaneousPropane120 gal1,000 kBtu/h
State SUS 120 1000NEA 1**Gas Storage-type InstantaneousGas120 gal1,000 kBtu/h
Intellihot iQ3001Gas TanklessGas, Propane12 gal3,001 kBtu/h
State SHE-75-100-*E 4**Gas StorageGas, Propane75 gal99.9 kBtu/h
State SHE-50-100-*E 4**Gas StorageGas, Propane50 gal99.9 kBtu/h
State BTH-251* 4**Gas StorageGas, Propane119 gal251 kBtu/h
State BTH-300* 4**Gas StorageGas, Propane119 gal300 kBtu/h

Source: ENERGY STAR certified commercial water heaters data, US EPA, models listed for the US market. Data build 2026-09-29. Methodology.