Air Duct Cleaning Cost in Billings, Montana
Expect to pay $350 to $800 for air duct cleaning in Billings, MT (whole house). Most homeowners end up near $600, depending on the equipment tier and how much of the old setup can be reused.
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Billings Weather and HVAC Load
Billings logs 6,753 heating degree days and 662 cooling degree days in a normal year, based on the closest NOAA weather station. Heating is the bigger job here, and furnaces and heat pumps in Billings put in far more hours than the air conditioner. On average, Billings gets 142 freezing nights and 32 days above 90°F per year. Snowfall averages about 57 inches.
| Heating degree days / year | 6,753 |
|---|---|
| Cooling degree days / year | 662 |
| Nights at or below 32°F | 142 |
| Days above 90°F | 32 |
| Average low / high | 37°F / 59.4°F |
Billings Housing Stock
Half the homes in Billings were built before 1979 (Census ACS median), so the typical house is about 47 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 64.8% of occupied homes, roughly 33,000 households. Homes here have a median value of $311,800 and households a median income of $71,855. Those two numbers drive the labor adjustment in our estimate.
Yellowstone County had 21 hail days and 32 days with damaging thunderstorm winds from 2020 through 2025, according to NOAA storm records. The largest hail reported was 2.75 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. In Billings, 18.4% 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 to Book It
- A musty smell after a leak or flood
- You moved into a house with no maintenance records
- Signs of mice or insects in the ducts
- Dust puffs out of the vents when the system starts
What Moves the Price
- Adding a dryer vent cleaning
- Sanitizing or mold treatment
- How many supply and return vents the house has
- House size and duct layout
- How hard it is to reach ducts in the attic or crawlspace
We kept the national figures close to unchanged for Billings using local income, home values and the equipment size this climate needs. Real bids can still come in outside the range, so collect three written quotes.
What the Quote Should Cover
- Inspecting the supply and return ducts
- Before-and-after photos
- Cleaning under negative pressure with a truck or portable vacuum
- Cleaning the registers and grilles
- Cleaning the blower compartment
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
- Watch out for $99 whole-house deals. They tend to turn into upsells once the crew is inside.
- Ask whether the company follows NADCA standards.
- If the ducts leak, have them sealed during the same visit.
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Air Duct Cleaning Questions from Billings Homeowners
How much is air duct cleaning in Billings?
Plan on $350 to $800, with most jobs near $600. 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 Billings?
Between late spring and early fall. Billings averages 142 freezing nights a year, and heating calls spike from November through February.
Does duct cleaning lower energy bills?
Not by much. Sealing leaky ducts makes a much bigger difference to efficiency and comfort.
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.
Air Duct Cleaning Near Billings
- Bozeman $410 to $940
- Missoula $360 to $830
- Great Falls $330 to $750
- Butte $320 to $720
Sources: U.S. Census Bureau ACS 5-year estimates 2019-2023 and 2024 population estimates; NOAA NCEI U.S. Climate Normals 1991-2020, station Billings Logan International Airport; NOAA Storm Events Database 2020-2025, Yellowstone County. Prices are our estimates, not contractor quotes. Updated 2026.