# Energy Conservation Program: Test Procedures for Central Air Conditioners and Heat Pumps
> **US Department of Energy** · Final rule; further delay of effective date. · Published 2025-03-20 · Effective 2025-05-20 · 90 FR 13052
## Document
- **Document number:** 2025-04473
- **Category:** other
- **Sub-agency:** US Department of Energy
- **Federal Register citation:** 90 FR 13052
- **CFR reference:** 10 CFR 429
- **Publication date:** 2025-03-20
- **Effective date:** 2025-05-20
- **Energy docket:** EERE-2022-BT-TP-0028
## Abstract

This document further delays the effective date of a recently published final rule amending the test procedures for central air conditioners and heat pumps.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2025/03/20/2025-04473/energy-conservation-program-test-procedures-for-central-air-conditioners-and-heat-pumps)
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