HVAC Tune-Up & Maintenance Cost in Great Falls, Montana
Expect to pay $80 to $240 for HVAC tune-up in Great Falls, MT (per visit). Most homeowners end up near $170, depending on the equipment tier and how much of the old setup can be reused.
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Great Falls Weather and HVAC Load
Great Falls logs 6,942 heating degree days and 421 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 Great Falls put in far more hours than the air conditioner. Count on roughly 143 nights below 32°F and 25 afternoons past 90°F in a typical year. Snowfall averages about 66 inches.
| Heating degree days / year | 6,942 |
|---|---|
| Cooling degree days / year | 421 |
| Nights at or below 32°F | 143 |
| Days above 90°F | 25 |
| Average low / high | 35.1°F / 59°F |
Great Falls Housing Stock
Census figures put the median build year in Great Falls at 1965, so a typical house here has about 61 years on it. A lot of these homes are on their second or third system by now. The ductwork is usually original, and leaky joints are common. Great Falls has roughly 18,000 owner-occupied homes, or 68.4% of households. The median home value is $237,400, and median household income is $63,934. We use both figures to adjust labor and pricing for this page.
NOAA storm reports for Cascade County show 12 hail days and 22 days with damaging thunderstorm winds over the six years from 2020 to 2025. The largest hail reported was 3 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 Great Falls, 20% 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
- Your energy bills have crept up
- Airflow is weak, or room temperatures are uneven
- The system hasn't been serviced in the past year
What Moves the Price
- A yearly maintenance plan or a one-time visit
- Extra cleaning of the coil, blower or drain
- How many systems the house has
- One system, or both heating and cooling
For Great Falls we lowered the national figures about 7%, 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
- Cleaning the coil and condensate drain
- Checking refrigerant and airflow
- Calibrating the thermostat
- Inspecting the burners, flame sensor and heat exchanger
- Checking and replacing the filter
- Tightening electrical connections
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
- Have the furnace tuned up in the fall and the AC in the spring.
- Keep your receipts. Many warranties ask for proof of maintenance.
- Yearly plans usually include repair discounts and priority scheduling.
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HVAC Tune-Up & Maintenance Questions from Great Falls Homeowners
How much is HVAC tune-up in Great Falls?
Plan on $80 to $240, with most jobs near $170. Equipment efficiency, house size and the condition of the ducts and wiring decide where your quote falls.
When is the best time to schedule HVAC tune-up in Great Falls?
Between late spring and early fall. Great Falls averages 143 freezing nights a year, and heating calls spike from November through February.
How often should HVAC be serviced?
Once a year for a furnace or an AC. Twice a year for a heat pump or any system that runs year-round.
Is an HVAC maintenance plan worth it?
For most people, yes. A plan usually costs about the same as two tune-ups, and the repair discounts and priority scheduling come with it.
HVAC Tune-Up & Maintenance Near Great Falls
Sources: U.S. Census Bureau ACS 5-year estimates 2019-2023 and 2024 population estimates; NOAA NCEI U.S. Climate Normals 1991-2020, station Great Falls 16st; NOAA Storm Events Database 2020-2025, Cascade County. Prices are our estimates, not contractor quotes. Updated 2026.