Furnace is 15 years or older and repair calls are becoming frequent
Heating · Bothell, WA
Furnace Replacement in Bothell, WA
Furnace replacement in Bothell typically runs $4,800 to $9,800 installed, depending on system size and ductwork condition. SPS Pro Services has installed furnaces throughout Bothell since 2017, and most jobs are completed in a single day by a local two-person crew.
Typical cost$4,800–$9,800
WarrantyWorkmanship warranty
AvailabilitySame-week visits
HoursMon–Fri 8am–6pm
Bothell sits in that stretch of the Sammamish River valley where damp, cool air settles overnight even on mild days, and furnaces here run long, low-intensity cycles for months at a time rather than short bursts. That constant low-grade operation wears out heat exchangers and blower motors faster than in drier climates, which is why furnaces in this area often need replacing a few years earlier than the national average lifespan suggests.
Local knowledge
What's different about furnace replacement in Bothell
We run service calls in Bothell every week — the same patterns come up again and again.
Bothell straddles King and Snohomish counties, so your electric utility is either PSE or Snohomish County PUD depending on which side of the city line your house sits on, and we check that before recommending electric-assist or heat pump backup options
Many homes in the Canyon Park and Norway Hill areas were built in the 1980s and 1990s with original ductwork sized for smaller furnaces, so we measure static pressure before quoting a replacement size rather than swapping in a same-size unit
Persistent regional humidity accelerates corrosion inside older steel heat exchangers, which is a common failure point we check first on any furnace over 15 years old in this area
Symptoms we see daily
Signs you need furnace replacement in Bothell
Uneven heating between rooms or a thermostat that won't hold temperature
Energy bills climbing with no change in how the home is used
Pilot light burns yellow instead of blue, or you notice odd smells when it runs
Banging, rattling, or grinding noises when the furnace starts up
No surprises
How a Bothell furnace replacement visit works
1
On-site assessment
A technician inspects your current furnace, ductwork, and venting, and measures your home's actual heating load rather than guessing from square footage alone.
2
Written estimate
You get a specific price within the $4,800 to $9,800 range based on unit size, efficiency tier, and any duct or electrical work needed, no surprise add-ons later.
3
Scheduling
Most Bothell installs are booked within a few days, and we work around your schedule since a house without heat is treated as a priority.
4
Installation day
Removal of the old unit, installation of the new furnace, and system startup typically take one full day for a standard replacement with no major duct changes.
5
Final walkthrough and testing
We run the system through a full heating cycle, check gas pressure and airflow at the registers, and walk you through the thermostat and filter setup before we leave.
Flat-rate pricing
Furnace Replacement in Bothell — what it costs
Conservative ranges for the Seattle metro. Your written quote is exact before work begins.
| Job | Typical price |
|---|---|
| In-home estimateExact flat quote for your home | Free |
| Standard furnace replacementTypical single-system job | $4,800–$6,470 |
| Mid-range furnace replacementHigher-capacity or multi-zone equipment | $6,470–$8,130 |
| Complex furnace replacementPremium equipment or difficult access | $8,130–$9,800 |
Prices reviewed by Sergei Petrov · July 2026. Parts availability can shift ranges — the quote you sign is final.
24/7 Emergency Line
Emergency dispatchNo heat at 11pm? We pick up.
Office hours are Mon–Fri, but the emergency line never closes. Call any hour and we dispatch a licensed tech across Greater Seattle.
Straight answers
Furnace Replacement in Bothell — FAQ
How long does a furnace last in Bothell's climate
Most furnaces here last 15 to 20 years, but homes near the river valley or in low-lying areas of Bothell often see corrosion-related failures a bit earlier due to sustained regional humidity. If your unit is past 15 years and needs frequent repairs, replacement usually costs less over time than continuing to patch it.
Do I need a permit to replace a furnace in Bothell
Yes, furnace replacement requires a mechanical permit, and depending on which side of the city you're on, that permit goes through either King County or Snohomish County, or the City of Bothell directly if your address falls within city limits. We handle the permit filing and inspection scheduling as part of the job.
Can my existing ductwork handle a new furnace
Not always. A lot of Bothell homes built before 2000 have ducts sized for smaller, less efficient furnaces than what's commonly installed today. We check static pressure during the estimate so the new system isn't fighting undersized ducts, which would shorten its lifespan.
What size furnace do I need for a Bothell home
It depends on square footage, insulation, and window exposure, not just a rule of thumb. A 1,800 square foot home in a sheltered part of Bothell may need a smaller unit than a similar-sized home exposed to wind off the Sammamish River valley. We calculate this on-site rather than sizing off square footage alone.
Founder & Lead HVAC Technician, SPS Pro Services
EPA Section 608 UniversalNATE Core Certified14+ years in the trade
Reviews the pricing and service guidance on this page against SPS Pro Services's actual job records in Bothell and across the Seattle metro.
Prices reviewed July 2026
Also in Bothell
Other services our crew handles on the same routes.
Need furnace replacement in Bothell?
Call (206) 427-8907 to schedule a furnace replacement estimate in Bothell, Monday through Friday, 8am to 6pm.