No provision of the Delaware building code or other local code may prohibit or otherwise limit the use of a refrigerant designated as acceptable for use pursuant to 42 U.S.C. § 7671k, provided any equipment containing such refrigerant is listed and installed in accordance with safety standards and use conditions imposed for that equipment or refrigerant.84 Del. Laws, c. 88, § 1;
Delaware Legal Code
§ 7604
Delaware Title 16 — Delaware law
Source: https://delcode.delaware.gov/title16/c076/index.html· Version 2026