10 CFR § 431.402 - Preemption of State regulations for commercial HVAC & WH products.

---
identifier: "/us/cfr/t10/s431.402"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "10 CFR § 431.402 - Preemption of State regulations for commercial HVAC & WH products."
title_number: 10
title_name: "Energy"
section_number: "431.402"
section_name: "Preemption of State regulations for commercial HVAC & WH products."
chapter_name: "DEPARTMENT OF ENERGY"
subchapter_number: "D"
subchapter_name: "ENERGY CONSERVATION"
part_number: "431"
part_name: "ENERGY EFFICIENCY PROGRAM FOR CERTAIN COMMERCIAL AND INDUSTRIAL EQUIPMENT"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "42 U.S.C. 6291-6317; 28 U.S.C. 2461 note."
regulatory_source: "64 FR 54141, Oct. 5, 1999, unless otherwise noted."
cfr_part: "431"
---


# 431.402 Preemption of State regulations for commercial HVAC & WH products.

Beginning on the effective date of such standard, an energy conservation standard set forth in this part for a commercial HVAC & WH product supersedes any State or local regulation concerning the energy efficiency or energy use of that product, except as provided for in Section 345(b)(2)(B)-(D) of the Act.