Boiler Replacement Cost in Butte, Montana
Our 2026 estimate for boiler replacement in Butte, MT is $6,100 to $13,800. That puts Butte 10% above the national average, mainly because of lower local labor costs and the bigger heating equipment this climate calls for.
Butte Weather and HVAC Load
NOAA's 1991-2020 climate normals put Butte at 9,128 heating degree days and 82 cooling degree days per year. Heating is the bigger job here, and furnaces and heat pumps in Butte put in far more hours than the air conditioner. Count on roughly 220 nights below 32°F and 8 afternoons past 90°F in a typical year. Snowfall averages about 15 inches. For a 2,000 sq ft house, this climate points to a heating load somewhere near 80,000 BTU/h. Treat that as a starting number. A Manual J calculation will move it up or down based on insulation and windows.
| Heating degree days / year | 9,128 |
|---|---|
| Cooling degree days / year | 82 |
| Nights at or below 32°F | 220 |
| Days above 90°F | 8 |
| Average low / high | 26.2°F / 54°F |
Butte Housing Stock
Census figures put the median build year in Butte at 1956, so a typical house here has about 70 years on it. Many houses that age were built with hot-water or steam heat, and plenty still run cast-iron boilers and radiators. About 11,000 households here own their home, 70.3% of the occupied total. With a median household income of $57,633 and a median home value of $225,100, local labor rates come out below the national middle in our model.
Silver Bow County had 1 day with damaging thunderstorm winds from 2020 through 2025, according to NOAA storm records. Storms here are more likely to cause power surges than coil damage, so a surge protector on the outdoor unit is worth the small cost. In Butte, 19.1% of residents are 65 or older. For older adults, a house with no heat in January or no AC during a heat wave is a medical risk. Mention it when you call, since many companies put those calls first.
When Replacement Makes Sense
- The pilot or ignition keeps failing
- Fuel bills keep going up
- Leaks, rust, or pressure that keeps dropping
- The boiler is 20 to 30 years old or more
What Moves the Price
- Pumps, zone valves and the piping around the boiler
- Condensing or non-condensing boiler
- A combi boiler that also makes your hot water
- Fuel type: gas, oil or propane
- A new chimney liner or venting
For Butte we raised the national figures about 10%, based on local income, home values and climate-based equipment sizing. Get at least three written quotes; real bids can land outside this range.
What the Quote Should Cover
- Venting and fuel hookups
- The new boiler and the piping around it
- Startup and safety tests
- Flushing and refilling the system
- Removing the old boiler
Montana Permits, Efficiency Rules and Rebates
Montana falls in the DOE's North region. New split central air conditioners must meet at least 13.4 SEER2, and heat pumps sold anywhere in the U.S. need 14.3 SEER2 and 7.5 HSPF2. Equipment replacements in Butte generally need a mechanical permit, and a reputable contractor will pull it for you. Ask for their Montana license or registration number and a certificate of insurance with the quote. The federal 25C tax credit ended for equipment installed after December 31, 2025, so incentives now come mostly from utilities and state programs. Check your electric and gas utility's rebate page before you pick equipment.
Before You Hire
- A combi boiler frees up space and replaces your water heater.
- Ask for a heat-loss calculation. A lot of old boilers are much bigger than the house needs.
- For a steam system, hire a contractor who works on steam regularly.
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Boiler Replacement Questions from Butte Homeowners
How much is boiler replacement in Butte?
Plan on $6,100 to $13,800, with most jobs near $10,300. Equipment efficiency, house size and the condition of the ducts and wiring decide where your quote falls.
When is the best time to schedule boiler replacement in Butte?
Between late spring and early fall. Butte averages 220 freezing nights a year, and heating calls spike from November through February.
Can I replace a boiler with a heat pump?
Yes, with an air-to-water heat pump or a ductless system. The radiators may need upgrading, because heat pumps run cooler water than boilers.
How long does a boiler last?
A cast-iron boiler can last 25 to 35 years. A modern condensing boiler usually lasts 15 to 20 with yearly service.
Boiler Replacement Near Butte
- Bozeman $7,900 to $17,900
- Great Falls $6,100 to $13,900
- Missoula $6,900 to $15,600
- Billings $6,500 to $14,800
Sources: U.S. Census Bureau ACS 5-year estimates 2019-2023 and 2024 population estimates; NOAA NCEI U.S. Climate Normals 1991-2020, station Butte Bert Mooney Airport; NOAA Storm Events Database 2020-2025, Silver Bow County. Prices are our estimates, not contractor quotes. Updated 2026.