AC Repair in Billings, Montana
AC repair in Billings starts near $140 for a simple fix and can reach $640 for after-hours calls or major parts. A typical bill is closer to $420.
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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. The AC still runs every summer, but it works far fewer hours than the furnace does. On average, Billings gets 142 freezing nights and 32 days above 90°F per year. Snowfall averages about 57 inches. On the cooling side, a 2,000 sq ft house here usually needs around 2.5 tons. A tight, well-insulated house may get by with half a ton less.
| 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.
Symptoms Worth a Service Call
- Ice on the refrigerant lines or the indoor coil
- The system cycles on and off every few minutes
- Water pooling around the indoor unit
- The breaker trips when the AC kicks on
- The outdoor unit hums, but the fan doesn't spin
What Moves the Price
- Nights, weekends and holidays
- Refrigerant type and how many pounds it takes
- The service call or diagnostic fee
- The part: a capacitor costs a fraction of a fan motor, and a compressor costs far more than both
- Whether the equipment sits in a tight attic or on a roof
We lowered the national figures about 9% 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
- Diagnosis and electrical testing
- A test run
- Replacing the failed part
- Checking refrigerant pressures
- Clearing the drain line if it's clogged
Montana Licensing and Efficiency Rules
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. A repair usually goes ahead without a permit, but the tech handling refrigerant must hold EPA 608 certification. Ask the company for its Montana license or registration number before the visit.
Before You Hire
- Swap the air filter and check the breaker before you call anyone.
- If you see ice, shut the system off. Running it frozen can kill the compressor.
- Ask for the per-pound refrigerant price before any work starts.
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AC Repair Questions from Billings Homeowners
What does AC repair cost in Billings?
Most bills land between $140 and $640, including the service call. A typical visit is about $420. Night and weekend calls cost more.
Why is my AC freezing up?
Usually poor airflow, from a dirty filter or coil, or low refrigerant from a leak.
What is the most common AC repair?
A failed run capacitor. The part is cheap, and the swap usually takes less than an hour.
AC Repair Near Billings
- Bozeman $150 to $720
- Missoula $140 to $640
- Great Falls $120 to $580
- Butte $120 to $560
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.