Idaho Code § 49-959: Air-conditioning equipment.

(1) Air-conditioning equipment shall be manufactured, installed and maintained with due regard for the safety of the occupants of the vehicle and the public and shall not contain any refrigerant which is toxic to persons or which is flammable at or below one thousand degrees (1000°) Fahrenheit, unless the refrigerant is included in the list published by the United States environmental protection agency as an approved alternative motor vehicle air-conditioning substitute for chlorofluorocarbon-12 under 42 U.S.C. section 7671k(c).

(2) No person shall have for sale, offer for sale, sell or equip any motor vehicle with any air-conditioning equipment unless it complies with the requirements of this section.

(3) No person shall operate on any highway any motor vehicle equipped with any air-conditioning equipment unless the equipment complies with the requirements of this section.