# Energy Conservation Program: Test Procedures for Central Air Conditioners and Heat Pumps
> **US Department of Energy** · Final rule; delay of effective date. · Published 2025-02-05 · Effective 2025-03-21 · 90 FR 9001
## Document
- **Document number:** 2025-02234
- **Category:** other
- **Sub-agency:** US Department of Energy
- **Federal Register citation:** 90 FR 9001
- **CFR reference:** 10 CFR 429
- **Publication date:** 2025-02-05
- **Effective date:** 2025-03-21
- **Energy docket:** EERE-2022-BT-TP-0028
## Abstract

This document delays the effective date of a recently published final rule amending the test procedures for central air conditioners and heat pumps. DOE also seeks comment on any further delay of the effective date, including the impacts of such delay, as well as comment on the legal, factual, or policy issues raised by the rule.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2025/02/05/2025-02234/energy-conservation-program-test-procedures-for-central-air-conditioners-and-heat-pumps)
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