2023 Montana Code 61-9-426. Air-conditioning equipment — use of flammable refrigerant prohibited

2022 Montana Code 61-9-426. Air-conditioning equipment — use of flammable refrigerant prohibited

2021 Montana Code 61-9-426. Air-conditioning equipment — use of flammable refrigerant prohibited

2019 Montana Code 61-9-426. Air-conditioning equipment — use of flammable refrigerant prohibited

2018 Montana Code 61-9-426. Air-conditioning equipment — use of flammable refrigerant prohibited

2016 Montana Code 61-9-426. Air-conditioning equipment — use of flammable refrigerant prohibited

2014 Montana Code 61-9-426. Air-conditioning equipment — use of flammable refrigerant prohibited

2013 Montana Code 61-9-426. Air-conditioning equipment — use of flammable refrigerant prohibited

2009 Montana Code 61-9-426 – Air-conditioning equipment — use of flammable refrigerant prohibited