Air Duct Cleaning Cost in Missoula, Montana
Air duct cleaning in Missoula runs about $620 for a typical job (whole house). Basic installs start near $360. High-efficiency equipment with duct or electrical work can reach $830.
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Missoula Weather and HVAC Load
In a normal year, Missoula racks up 7,182 heating and 340 cooling degree days (NOAA 1991-2020 normals). Heating is the bigger job here, and furnaces and heat pumps in Missoula put in far more hours than the air conditioner. Count on roughly 163 nights below 32°F and 22 afternoons past 90°F in a typical year. Snowfall averages about 50 inches.
| Heating degree days / year | 7,182 |
|---|---|
| Cooling degree days / year | 340 |
| Nights at or below 32°F | 163 |
| Days above 90°F | 22 |
| Average low / high | 34.7°F / 57.6°F |
Missoula Housing Stock
The median Missoula home dates to 1981, according to the Census ACS. That makes the typical house about 45 years old. A lot of these homes are on their second or third system by now. The ductwork is usually original, and leaky joints are common. Owners live in 47.8% of occupied homes, roughly 16,000 households. The median home value is $427,400, and median household income is $65,329. We use both figures to adjust labor and pricing for this page.
Between 2020 and 2025, NOAA's Storm Events Database logged 8 hail days and 9 days with damaging thunderstorm winds in Missoula County. The largest hail reported was 2.5 inches across. Hail flattens the thin aluminum fins on condenser coils and cuts airflow. After a big storm, take a look at the outdoor unit; homeowners insurance often covers the damage.
When to Book It
- You moved into a house with no maintenance records
- You just finished a remodel
- Dust puffs out of the vents when the system starts
- Signs of mice or insects in the ducts
What Moves the Price
- Sanitizing or mold treatment
- House size and duct layout
- How hard it is to reach ducts in the attic or crawlspace
- How many supply and return vents the house has
- Adding a dryer vent cleaning
For Missoula we raised the national figures about 3%, 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
- Before-and-after photos
- Inspecting the supply and return ducts
- Cleaning the blower compartment
- Cleaning the registers and grilles
- Cleaning under negative pressure with a truck or portable vacuum
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.
Before You Hire
- If the ducts leak, have them sealed during the same visit.
- Put in a new filter as soon as the cleaning is done.
- Ask whether the company follows NADCA standards.
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Air Duct Cleaning Questions from Missoula Homeowners
How much is air duct cleaning in Missoula?
Plan on $360 to $830, with most jobs near $620. Equipment efficiency, house size and the condition of the ducts and wiring decide where your quote falls.
When is the best time to schedule air duct cleaning in Missoula?
Between late spring and early fall. Missoula averages 163 freezing nights a year, and heating calls spike from November through February.
How often should ducts be cleaned?
There's no set schedule. The EPA recommends cleaning when there's visible mold, pests or a lot of debris, not on a routine basis.
Does duct cleaning lower energy bills?
Not by much. Sealing leaky ducts makes a much bigger difference to efficiency and comfort.
Air Duct Cleaning Near Missoula
- Butte $320 to $720
- Billings $350 to $800
- Great Falls $330 to $750
- Bozeman $410 to $940
Sources: U.S. Census Bureau ACS 5-year estimates 2019-2023 and 2024 population estimates; NOAA NCEI U.S. Climate Normals 1991-2020, station Missoula; NOAA Storm Events Database 2020-2025, Missoula County. Prices are our estimates, not contractor quotes. Updated 2026.