CHAPTER 15Building regulations — installation and use of refrigerants H.F. 337AN ACT relating to the use of certain refrigerants.Be It Enacted by the General Assembly of the State of Iowa:   Section 1.   NEW SECTION.  103A.24  Refrigerants.   Notwithstanding any provision of law to the contrary, a building regulation shall not prohibit or otherwise limit the use of a refrigerant designated as acceptable for use pursuant to and in accordance with 42 U.S.C.§7671k, provided that any equipment containing the refrigerant is listed and installed in accordance with safety standards and use conditions imposed pursuant to such designation.Approved March 22, 2023