# Energy Conservation Program: Energy Conservation Standards for Consumer Gas-Fired Instantaneous Water Heaters
> **US Department of Energy** · Final rule; delay of effective date. · Published 2025-03-20 · Effective 2025-05-20 · 90 FR 13054
## Document
- **Document number:** 2025-04475
- **Category:** energy-efficiency
- **Sub-agency:** US Department of Energy
- **Federal Register citation:** 90 FR 13054
- **CFR reference:** 10 CFR 430
- **Publication date:** 2025-03-20
- **Effective date:** 2025-05-20
- **Energy docket:** EERE-2017-BT-STD-0019
## Abstract

This document further delays the effective date of a recently published final rule amending the energy conservation standards for gas-fired instantaneous water heaters.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2025/03/20/2025-04475/energy-conservation-program-energy-conservation-standards-for-consumer-gas-fired-instantaneous-water)
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