This document further delays the effective date of a recently published final rule amending the test procedures for central air conditioners and heat pumps. As of May 20, 2025, the effective date of the rule amending Title 10 Code of Federal Regulations (CFR) Parts 429 and Part 430 published in the Federal Register at 90 FR 1224 on January 7, 2025, is further delayed until July 7, 2025.
USA – Energy Conservation Program: Test Procedures for Central Air Conditioners and Heat Pumps
