How Much Does Furnace Repair Cost in Seattle?
A typical furnace repair visit runs $150–$450 including the diagnostic fee and a common single-part repair; diagnostic/service-call fees alone typically run $75–$200. Those are national figures — Seattle-area labor typically runs above national averages, and after-hours emergency work costs more (we run Mon–Sat 8 AM–7 PM with a Sunday emergency on-call technician). You'll always get the exact price in writing before we start work.
Typical Seattle-area ranges
Repair visit / diagnostic
$150 – $450
Diagnostic fee plus a typical single-part repair
Diagnostic/service-call fees typically run $75–$200; after-hours emergency work costs more.
National figures — Seattle-area labor typically runs above. Sources: HomeGuide — HVAC repair cost (2026)
Furnace or AC tune-up
$70 – $200
One professional seasonal maintenance visit
Glendale's Maintenance Plans cover this differently — plans as low as $23/month include visits, repair discounts, and replacement credit.
National figures — Seattle-area labor typically runs above. Sources: HomeGuide — furnace / AC maintenance cost (2026) · Angi — furnace inspection cost (2026)
These are typical Seattle-area market ranges compiled from published cost guides (Angi, HomeGuide, and Seattle-area 2025–2026 cost studies) — market context, not a quote from Glendale Heating & Air Conditioning. Your home's size, equipment, ductwork, electrical, and permits change the number. National figures are marked; Seattle-area labor typically runs above national averages.
What do common furnace repairs involve?
The repairs we see most in Seattle homes: ignitors and flame sensors (quick, inexpensive), blower motors and capacitors (mid-range), control boards and gas valves (the expensive end), and simple fixes like clogged filters or thermostat faults that cost little more than the visit itself.
Every Glendale repair starts with a diagnostic and a flat, upfront price for the fix. Our trucks carry common parts, so most repairs finish in a single visit.
When should you stop repairing and replace?
Two questions decide it: how old is the furnace, and how big is the repair? Past 12–15 years old, a major repair — think control board, heat exchanger, or gas valve — usually isn't worth it against a $4,000–$9,000 replacement that resets efficiency and warranty.
If another company has told you a repair is 'not worth it' and quoted a replacement, bring us the number. Our free second opinion on replacement quotes tells you plainly what the quote covers, what it misses, and what we'd do in your home.
How do you avoid repeat repairs?
Most winter breakdowns we see trace back to skipped maintenance — dirty filters, unchecked ignition systems, and drift that a fall tune-up would have caught. Glendale Maintenance Plans (as low as $23/month) include maintenance visits (one per year on Essential, two on Elite), 10–20% repair discounts by plan level, and priority scheduling — plus a 60-day workmanship guarantee on plan repairs.
What moves the price up or down?
The failed part
Ignitors and sensors sit at the low end; blower motors mid-range; control boards, gas valves, and heat exchangers at the top. The diagnostic pins it down before you commit.
System age and parts availability
Parts for 20-year-old furnaces can be slow and expensive to source — sometimes the deciding factor in the repair-versus-replace call.
When you call
After-hours emergency work costs more than a scheduled weekday visit. Our Sunday emergency on-call service carries a call-out fee — we tell you the number on the phone, before anyone rolls a truck.
Maintenance history
A maintained furnace breaks less and costs less per repair. Glendale Maintenance Plan members also get 10–20% off repairs.
An honest quote includes
- A diagnostic fee quoted on the phone before the visit
- A flat, written price for the repair before work starts
- The repair-versus-replace math when the fix is major
- Parts and labor warranty terms for the repair
Cost questions Seattle homeowners ask
How much does a furnace repair visit cost?
Typical repair visits run $150–$450 including the diagnostic and a common single-part repair; diagnostic fees alone typically run $75–$200. Those are national figures — Seattle-area labor typically runs above them, and Glendale quotes the exact price in writing before starting work.
Do you charge extra for emergency furnace repair?
After-hours work costs more than a scheduled visit. Our hours are Monday–Saturday 8 AM–7 PM, with a Sunday emergency on-call technician (an after-hours call-out fee applies) — we tell you the fee on the phone before dispatching.
Is it worth repairing a 15-year-old furnace?
For a minor fix, often yes. For a major repair — control board, gas valve, heat exchanger — usually not: replacement typically runs $4,000–$9,000 in the Seattle area and resets both efficiency and warranty. We put the math in writing so you can decide.
Does Glendale offer free second opinions?
Yes — free second opinions on replacement quotes. Bring us the other company's number and we'll tell you plainly what it covers, what it misses, and what we'd do. Diagnosing a system in person is a paid technician visit, and that price is quoted on the phone before anyone rolls a truck.
Ready for comfort you can count on?
Whether it's a furnace that quit on a cold morning or a whole new system, the Glendale team is ready. Honest pricing, expert work, and 87+ years behind every visit.
Hours & Emergency
- Mon–Sat: 8:00 AM – 7:00 PM
- Sun: Emergency On-Call Only
- Emergency line: (206) 243-7700