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Energy Department · EERE-2022-BT-TP-0028

Energy Conservation Program: Test Procedure for Central Air Conditioners and Heat Pumps

The Federal Register published the matched proposal on May 29, 2025 and the matched final rule on September 9, 2025, 103 days later.

Snapshot November 10, 2026

Official publication history

  1. Final rule ·

    Energy Conservation Program: Test Procedure for Central Air Conditioners and Heat Pumps

    Document 2024-30852 · Final rule.

    Effective date in register data February 6, 2025

  2. Delay or stay ·

    Energy Conservation Program: Test Procedures for Central Air Conditioners and Heat Pumps

    Document 2025-02234 · Final rule; delay of effective date.

    Comment date listed March 7, 2025Effective date in register data March 21, 2025

  3. Delay or stay ·

    Energy Conservation Program: Test Procedures for Central Air Conditioners and Heat Pumps

    Document 2025-04473 · Final rule; further delay of effective date.

    Effective date in register data May 20, 2025

  4. Delay or stay ·

    Energy Conservation Program: Test Procedures for Central Air Conditioners and Heat Pumps

    Document 2025-09064 · Final rule; further delay of effective date.

    Effective date in register data January 7, 2025

  5. Proposal ·

    Energy Conservation Program: Test Procedure for Central Air Conditioners and Heat Pumps

    Document 2025-09591 · Notice of proposed rulemaking and request for comment.

    Comment date listed June 30, 2025

  6. Final rule ·

    Energy Conservation Program: Test Procedure for Central Air Conditioners and Heat Pumps

    Document 2025-17227 · Final rule.

    Effective date in register data September 9, 2025

About this timeline

How the records were matched

America.co links a proposed rule and a later final rule when the Federal Register records share the exact docket identifier and lead agency. This snapshot covers records published from January 1, 2025 to November 10, 2026.

A docket can hold more than one regulatory action. Dates here are dates listed in individual notices. Later corrections, court actions, other dockets and records outside the date window may change what applies. Follow the official documents for the full text and effective dates.

Federal Register data source · Search Regulations.gov · Download this snapshot