Montana installation guides.
Montana DEQ runs air programs statewide, but Yellowstone, Missoula, Cascade, Flathead and Lincoln counties operate their own. DEQ’s Alternative Energy Revolving Loan Program lists EPA-certified low-emission wood stoves as eligible.
Montana DEQ Alternative Energy Revolving Loan ProgramChoose your city.
Billings
Yellowstone County / south-central MontanaBillings issues building and mechanical permits only inside city limits; outside them, Montana’s state mechanical permit does not apply to homes with fewer than five dwelling units.
Read the guideBozeman
Gallatin County / Gallatin ValleyIn Bozeman’s Neighborhood Conservation Overlay District, which covers more than 4,000 properties, any exterior change needs a Certificate of Appropriateness before a building permit, so check a new chimney or flue with Planning first.
Read the guideGreat Falls
Cascade County / north-central MontanaGreat Falls’ special homeowner mechanical permit covers only dryer vents and bathroom or kitchen exhaust fans, so it does not list heating appliances such as wood stoves.
Read the guideHelena
Lewis and Clark County / Helena ValleyHelena’s permit page names wood stoves outright among work needing a mechanical permit, and on Lewis and Clark County Poor air days only pellet and EPA-certified stoves may run.
Read the guideKalispell
Flathead County / Flathead ValleyKalispell sits inside its own air pollution control district, but the county’s rules ask stove owners to cut back voluntarily during air alerts rather than banning new stoves.
Read the guide
We add guides as local research is completed. Rules and business coverage vary by address. Explore national planning guides for areas not yet covered.