Montana Title 61. Motor Vehicles § 61-9-426. Air-conditioning equipment--use of flammable refrigerant prohibited

(1) Air-conditioning equipment must be maintained with due regard for the safety of the occupants of the vehicle, service technicians, and the public.

(2) Air-conditioning equipment may contain only refrigerant that has been included in the list published by the United States environmental protection agency as a safe alternative motor vehicle air-conditioning substitute for chlorofluorocarbon-12 pursuant to 42 U.S.C. 7671k(c).

(3) A person may not equip or maintain a motor vehicle or special mobile equipment with air-conditioning equipment or refrigerants that do not comply with the requirements of this section.

(4) As used in 61-9-427 and this section, “air-conditioning equipment” means mechanical, belt-driven, vapor compression refrigerant equipment that is used to cool the driver's compartment or passenger compartment of a motor vehicle or special mobile equipment.