Consumer Water Heaters

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As defined in the Code of Federal Regulations (CFR), “consumer water heater” means a product which utilizes oil, gas, or electricity to heat potable water for use outside the heater upon demand, including—(1) Storage type units which heat and store water at a thermostatically controlled temperature, including gas storage water heaters with an input of 75,000 Btu per hour or less, oil storage water heaters with an input of 105,000 Btu per hour or less, and electric storage water heaters with an input of 12 kilowatts or less;(2) Instantaneous type units which heat water but contain no more than one gallon of water per 4,000 Btu per hour of input, including gas instantaneous water heaters with an input of 200,000 Btu per hour or less, oil instantaneous water heaters with an input of 210,000 Btu per hour or less, and electric instantaneous water heaters with an input of 12 kilowatts or less; and(3) Heat pump type units, with a maximum current rating of 24 amperes at a voltage no greater than 250 volts, which are products designed to transfer thermal energy from one temperature level to a higher temperature level for the purpose of heating water, including all ancillary equipment such as fans, storage tanks, pumps, or controls necessary for the device to perform its function. 10 CFR 430.2 Manufacturers have been required to comply with the U.S. Department of Energy (DOE) energy conservation standards for consumer water heaters since 1990.

Frequently Asked Questions

Rated Storage Volume Questions

 

 

Current Standard | Current Test Procedure | Ongoing Rulemaking for Standards | Ongoing Rulemaking for Test Procedure | Helpful Links


Recent and Ongoing Rulemakings

For the latest information on the planned timing of future DOE regulatory milestones, see the current Office of Management and Budget Unified Agenda of Regulatory and Deregulatory Actions. All planned dates are preliminary and subject to change.

Standards

DOE has published a Federal Register final rule prescribing new energy conservation standards for consumer water heaters. 75 FR 20112 (April 16, 2010).

The consumer water heater energy conservation standard rulemaking docket EERE-2006-BT-STD-0129 contains all notices, public comments, public meeting transcripts, and supporting documents pertaining to this rulemaking.

DOE is currently undertaking a rulemaking to consider amending its definitions pertaining to consumer water heaters and to clarify the applicability of energy conservation standards for consumer water heaters that are utilized as a secondary back-up heat source in solar-thermal heating systems.  The “solar-assisted fossil-fuel storage water heater” and “solar-assisted electric storage water heater” energy conservation standard rulemaking docket EERE-2014-BT-STD-0045 contains all notices, public comments, public meeting transcripts, and supporting documents pertaining to this rulemaking.

Frequently Asked Questions

Rated Storage Volume Questions

Public Meeting Information:

There is no public meeting scheduled at this time.

Submitting Public Comments

The comment period is closed.

RELATED DOCUMENTS

Request for Information

Notice of Proposed Rulemaking

Final Rule

Test Procedure

DOE has published a Federal Register final rule pertaining to the conversion factors for consumer water heaters and certain commercial water heaters. 81 FR 96204 (December 29, 2016).

DOE has published a Federal Register supplemental notice of proposed rulemaking (SNOPR) pertaining to test procedures for consumer and certain commercial water heaters 81 FR 59736 (August 30, 2016).

In response to the April 2015 NOPR, DOE is issuing this SNOPR, which: (1) updates the proposed mathematical conversion factors based on new test data received after the publication of the April 2015 NOPR; (2) proposes updates to the methodology for developing the conversions for certain covered water heaters based on feedback received from interested parties; and (3) proposes a new approach for denominating the existing energy conservation standards in terms of the new uniform energy factor (UEF) metric.

The “mathematical conversion factor” rulemaking docket EERE-2015-BT-TP-0007 contains all notices, public comments, public meeting transcripts, and supporting documents pertaining to this rulemaking.

DOE published a final rule prescribing new test procedures for consumer water heaters. 79 FR 40542 (July 11, 2014).

The consumer water heater test procedure rulemaking docket EERE-2011-BT-TP-0042 contains all notices, public comments, public meeting transcripts, and supporting documents pertaining to this rulemaking.

Public Meeting Information

There is no public meeting scheduled at this time.

Submitting Public Comments

The comment period is closed.

RELATED DOCUMENTS

Supplemental Notice of Proposed Rulemaking
Final Rule

The consumer water heater test procedure rulemaking docket EERE-2011-BT-TP-0042 contains all notices, public comments, public meeting transcripts, and supporting documents pertaining to this rulemaking.

The comment period is closed.

RELATED DOCUMENTS

Notice of Proposed Rulemaking
Final Rule

Final Rule


Current Standard

Consumer water heaters manufactured and distributed in commerce, as defined by 42 U.S.C. 6291(16), must meet the energy conservation standards specified in the Code of Federal Regulations at 10 CFR 430.32(d).


Current Test Procedure

To determine that consumer water heaters that are currently manufactured or distributed into commerce are in compliance with DOE standards, manufacturers must follow the test procedure methods specified at Appendix E to Subpart B of Part 430 – Uniform Test Method for Measuring the Energy Consumption of Water Heaters.


Helpful Links

Compliance

DOE has established regulations on certification, compliance, and enforcement in the CFR at 10 CFR Part 429.  These regulations cover statistical sampling plans, certified ratings, certification reports, record retention, and enforcement.  More information on these regulations is available here.

Waivers

For information on current test procedure waivers, see DOE’s Waivers webpage.

For information about obtaining test procedure waivers, see 10 CFR 430.27.

Exceptions

DOE's Office of Hearings and Appeals has not authorized exception relief for consumer water heaters.

For information about obtaining exception relief, see 10 CFR part 1003.

Guidance and Frequently Asked Questions

For information on further guidance and answers to Frequently Asked Questions on all covered products, see DOE’s Further Guidance database.

State Exemptions to Federal Pre-emption

DOE has not exempted any state from this energy conservation standard. States may petition DOE to exempt a state regulation from preemption by the Federal energy conservation standard. States may also petition DOE to withdraw such exemptions. For details, see 10 CFR part 430, subpart D.

Small Business Exemptions

Any manufacturer of a covered product with annual gross revenues that do not exceed $8,000,000 from all its operations and meets certain other conditions may apply for an exemption to the energy conservation standard. For details, see 10 CFR part 430, subpart E.

ENERGY STAR®

DOE supports the testing and verification of ENERGY STAR® products in close collaboration with the Environmental Protection Agency.

Find tips and guidance for making your home, workplace, or vehicle more energy efficient visit EnergySavers.gov.

Contact information

For more information related to this product, please email:
ApplianceStandardsQuestions@ee.doe.gov


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