Rheem Commercial water is here to help you navigate through the upcoming changes to enable you to make choices that fit your long-term needs.
DOE Standards
What you need to know
The Department of Energy’s New Conservation Standards
Looking Ahead to 2026
We’ve gathered the facts and removed the complexities behind the new standards to prepare you for the new changes scheduled to take effect on October 6, 2026.
The new standards are a significant step towards energy efficiency impacting commercial gas water heaters.
Summary of the Rule
Commercial gas water heaters manufactured on and after October 6, 2026, must meet the new minimum DOE energy conservation standard, as outlined below:
DOE Energy
*TE=Thermal Efficiency (%), SL=Standby Loss (Btu/h), UEF=Uniform Energy Factor, Q=Input Rate (Btu/h), Vr=rated storage volume.
For more information about the new ruling, visit Energy Conservation Program: Energy Conservation Standards for Commercial Water Heating Equipment.
What to Expect:
Lower Carbon Emissions
According to the DOE, the adoption of these standards will reduce carbon emissions by 38 million metric tons between 2026 and 2055. This is equivalent to the average annual emissions of approximately 37 coal-fired power plants.
Lower Carbon Emissions
According to the DOE, the adoption of these standards will reduce carbon emissions by 38 million metric tons between 2026 and 2055. This is equivalent to the average annual emissions of approximately 37 coal-fired power plants.
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