AC Repair in Seattle, Washington
AC repair in Seattle starts near $180 for a simple fix and can reach $850 for after-hours calls or major parts. A typical bill is closer to $550.
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Seattle Weather and HVAC Load
In a normal year, Seattle racks up 4,482 heating and 210 cooling degree days (NOAA 1991-2020 normals). Heating is the bigger job here. The AC still runs every summer, but it works far fewer hours than the furnace does. On average, Seattle gets 25 freezing nights and 2 days above 90°F per year. Snowfall averages about 4 inches.
| Heating degree days / year | 4,482 |
|---|---|
| Cooling degree days / year | 210 |
| Nights at or below 32°F | 25 |
| Days above 90°F | 2 |
| Average low / high | 45.7°F / 60.8°F |
Seattle Housing Stock
Census figures put the median build year in Seattle at 1974, so a typical house here has about 52 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. Seattle has roughly 156,000 owner-occupied homes, or 44.2% of households. Homes here have a median value of $912,100 and households a median income of $121,984. Those two numbers drive the labor adjustment in our estimate.
NOAA's Storm Events Database shows no hail or damaging-wind days for King County from 2020 through 2025, so storm damage to outdoor units is rare here.
Symptoms Worth a Service Call
- The AC runs, but the air coming out is warm
- Water pooling around the indoor unit
- The outdoor unit hums, but the fan doesn't spin
- Ice on the refrigerant lines or the indoor coil
- The breaker trips when the AC kicks on
What Moves the Price
- Whether the equipment sits in a tight attic or on a roof
- Nights, weekends and holidays
- Refrigerant type and how many pounds it takes
- The part: a capacitor costs a fraction of a fan motor, and a compressor costs far more than both
- The service call or diagnostic fee
We raised the national figures about 21% for Seattle 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
- Replacing the failed part
- Clearing the drain line if it's clogged
- Checking refrigerant pressures
- Diagnosis and electrical testing
- A test run
Washington Licensing and Efficiency Rules
Washington 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 Washington license or registration number before the visit.
Before You Hire
- If you see ice, shut the system off. Running it frozen can kill the compressor.
- Swap the air filter and check the breaker before you call anyone.
- If the compressor is gone on an older unit, get a replacement quote before you pay for the repair.
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AC Repair Questions from Seattle Homeowners
What does AC repair cost in Seattle?
Most bills land between $180 and $850, including the service call. A typical visit is about $550. Night and weekend calls cost more.
What is the most common AC repair?
A failed run capacitor. The part is cheap, and the swap usually takes less than an hour.
Why is my AC freezing up?
Usually poor airflow, from a dirty filter or coil, or low refrigerant from a leak.
AC Repair Near Seattle
Sources: U.S. Census Bureau ACS 5-year estimates 2019-2023 and 2024 population estimates; NOAA NCEI U.S. Climate Normals 1991-2020, station Seattle Sand Point Wsfo; NOAA Storm Events Database 2020-2025, King County. Prices are our estimates, not contractor quotes. Updated 2026.