Furnace Replacement Cost in Tacoma, Washington
Expect to pay $3,800 to $9,200 for furnace replacement in Tacoma, WA. Most homeowners end up near $6,800, depending on the equipment tier and how much of the old setup can be reused.
Tacoma Weather and HVAC Load
Tacoma logs 4,332 heating degree days and 211 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 Tacoma put in far more hours than the air conditioner. Summer heat stays mild, with 90°F days almost unheard of, while a normal year brings 27 nights at or below freezing. Snowfall averages about 6 inches. For a 2,000 sq ft house, this climate points to a heating load somewhere near 55,000 BTU/h. Treat that as a starting number. A Manual J calculation will move it up or down based on insulation and windows.
| Heating degree days / year | 4,332 |
|---|---|
| Cooling degree days / year | 211 |
| Nights at or below 32°F | 27 |
| Days above 90°F | 1 |
| Average low / high | 46°F / 61.3°F |
Tacoma Housing Stock
Census figures put the median build year in Tacoma at 1967, so a typical house here has about 59 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. About 52,000 households here own their home, 56.5% of the occupied total. The median home value is $454,600, and median household income is $83,857. We use both figures to adjust labor and pricing for this page.
NOAA's Storm Events Database shows no hail or damaging-wind days for Pierce County from 2020 through 2025, so storm damage to outdoor units is rare here.
When Replacement Makes Sense
- The furnace is 15 to 20 years old or more
- Gas or electric bills keep climbing even though usage hasn't changed
- Some rooms stay cold, the burner short-cycles, or the ignitor keeps failing
- A repair quote runs past a third of the cost of a new unit
What Moves the Price
- Condition of the existing ductwork and any changes it needs
- New PVC venting if you move to a condensing model
- BTU size, which should come from a Manual J load calculation
- Single-stage, two-stage or modulating gas valve
- AFUE rating: a basic 80% unit vs. a 96% condensing furnace
- Permit and inspection fees, which the local building department sets
We raised the national figures about 18% for Tacoma 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
- The permit and the manufacturer warranty registration
- Combustion and safety tests
- The new furnace, filter rack and thermostat wiring
- Gas line and vent connections
- Removing and hauling away the old furnace
Washington Permits, Efficiency Rules and Rebates
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. Equipment replacements in Tacoma generally need a mechanical permit, and a reputable contractor will pull it for you. Ask for their Washington license or registration number and a certificate of insurance with the quote. The federal 25C tax credit ended for equipment installed after December 31, 2025, so incentives now come mostly from utilities and state programs. Check your electric and gas utility's rebate page before you pick equipment.
Before You Hire
- Replace it in early fall if you can. A no-heat emergency in January costs more and leaves you fewer choices.
- Ask for the Manual J load calculation in writing. Oversized furnaces are the most common mistake we see.
- Look up utility rebates on 95%+ AFUE units before you buy.
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Furnace Replacement Questions from Tacoma Homeowners
How much is furnace replacement in Tacoma?
Plan on $3,800 to $9,200, with most jobs near $6,800. Equipment efficiency, house size and the condition of the ducts and wiring decide where your quote falls.
When is the best time to schedule furnace replacement in Tacoma?
Between late spring and early fall. Tacoma averages 27 freezing nights a year, and heating calls spike from November through February.
Is a high-efficiency furnace worth it?
In cold climates, a 95%+ AFUE furnace usually earns back the price difference in lower gas bills. Where winters are mild, the payback can take a very long time.
How long does a furnace replacement take?
A straight swap is usually done in one day, somewhere between 4 and 10 hours. Moving to a condensing furnace with new PVC venting can add a few more.
Furnace Replacement Near Tacoma
Sources: U.S. Census Bureau ACS 5-year estimates 2019-2023 and 2024 population estimates; NOAA NCEI U.S. Climate Normals 1991-2020, station Tacoma; NOAA Storm Events Database 2020-2025, Pierce County. Prices are our estimates, not contractor quotes. Updated 2026.