# Energy Conservation Program: Energy Conservation Standards for Consumer Gas-fired Instantaneous Water Heaters
> **US Department of Energy** · Final rule. · Published 2024-12-26 · Effective 2025-03-11 · 89 FR 105188
## Document
- **Document number:** 2024-30369
- **Category:** energy-efficiency
- **Sub-agency:** US Department of Energy
- **Federal Register citation:** 89 FR 105188
- **CFR reference:** 10 CFR 430
- **Publication date:** 2024-12-26
- **Effective date:** 2025-03-11
- **Energy docket:** EERE-2017-BT-STD-0019
## Abstract

The Energy Policy and Conservation Act, as amended ("EPCA"), prescribes energy conservation standards for various consumer products and certain commercial and industrial equipment, including gas-fired instantaneous water heaters, which are a type of consumer water heater. EPCA also requires the U.S. Department of Energy ("DOE" or the "Department") to periodically review its existing standards to determine whether more-stringent standards would be technologically feasible and economically justified, and would result in significant energy savings. In this final rule, DOE is adopting amended energy conservation standards for gas-fired instantaneous water heaters. It has determined that the amended energy conservation standards for these products would result in significant conservation of energy, and are technologically feasible and economically justified.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2024/12/26/2024-30369/energy-conservation-program-energy-conservation-standards-for-consumer-gas-fired-instantaneous-water)
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