Ala. Code § 11-107-4: Use of Certain Refrigerants and Refrigerant-Equipped Products in Compliance with the National Clean Air Act.

(a) No provision of the state building code, or any municipal or county building code, or any other law or rule, may prohibit or otherwise limit the use of a substitute refrigerant or substitute refrigerant-equipped product that complies with the National Clean Air Act pursuant to 42 U.S.C. § 7671k and regulations adopted thereunder.

(b) Any heating, ventilation, air conditioning, or refrigeration equipment containing a refrigerant described in subsection (a) shall be listed and installed in accordance with all applicable safety standards and use conditions imposed pursuant to the designation.