Furnace blows cold air or won't turn on at all
Heating · Seattle, WA
Furnace Repair in Seattle, WA
Furnace repair costs in Seattle typically run $189 to $950, depending on the problem. SPS Pro Services sends licensed technicians across King County, often same-day, to diagnose ignition failures, blower motor problems, and thermostat faults before your house goes cold overnight.
Typical cost$189–$950
WarrantyWorkmanship warranty
AvailabilitySame-week visits
HoursMon–Fri 8am–6pm
Any furnace repair touching gas piping, venting, or electrical control boards falls under Washington State L&I code requirements, and certain fixes, like a heat exchanger swap or control board rewiring, need a permit pulled by a licensed contractor. SPS Pro Services carries the required WA L&I registration for HVAC and electrical work, so repairs on your Seattle furnace are documented and won't cause problems during a home sale or insurance claim later.
Local knowledge
What's different about furnace repair in Seattle
Local housing stock and utilities in Seattle change what this work involves.
Many Seattle homes in Ballard, Wallingford, and Ravenna date to the 1920s through 1950s, with original ductwork that was never sized for today's high-efficiency furnaces, so repairs often involve adjusting airflow, not just swapping parts.
PSE supplies natural gas to most Seattle neighborhoods, and any repair involving the gas valve or line has to meet both PSE connection standards and WA L&I gas piping code before we close up the job.
Seattle's wet, mild winters mean condensate lines on high-efficiency furnaces clog or freeze more often than in drier climates, a common cause of the no-heat calls we get from Seattle homeowners between November and February.
Symptoms we see daily
Signs you need furnace repair in Seattle
Short cycling — turns on and off every few minutes
Loud banging, screeching, or rattling from the unit
Thermostat set correctly but rooms stay cold
Yellow or flickering flame instead of steady blue
No surprises
How a Seattle furnace repair visit works
1
Diagnostic call
You describe the symptoms, no heat, short cycling, strange noise, and we schedule a technician for the same day when possible.
2
On-site inspection
The technician tests the ignition system, blower, gas pressure, and electrical connections to pinpoint the failure and check for any code issues from prior work.
3
Written estimate
You get a flat price before any repair starts, based on the $189 to $950 range, with the exact part and labor cost broken out.
4
Repair and permit check
If the fix involves gas line work or electrical rewiring, we pull the required WA L&I permit and complete the repair to current code.
5
Test and documentation
We run the furnace through a full heating cycle, confirm safe operation, and leave you with paperwork covering the repair and any permit or inspection record.
Flat-rate pricing
Furnace Repair in Seattle — what it costs
Conservative ranges for the Seattle metro. Your written quote is exact before work begins.
| Job | Typical price |
|---|---|
| Diagnostic / service callCredited toward the work we do | $189 |
| Minor furnace repairSingle small component or adjustment | $189–$440 |
| Typical furnace repairThe most common jobs we see | $440–$700 |
| Major furnace repairBig-ticket parts and labor | $700–$950 |
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 Repair in Seattle — FAQ
Do I need a permit for furnace repair in Seattle?
Most minor repairs, like replacing an igniter or blower motor, do not require a permit. But work involving gas line modifications, heat exchanger replacement, or control panel rewiring does under WA L&I code, and we handle that paperwork as part of the job.
Why does my furnace in Seattle keep shutting off?
In older Seattle homes, this is often a clogged flame sensor, a failing limit switch, or a condensate line backing up from our wet winters. We test all three before replacing parts, since sensor cleaning sometimes solves it without a repair.
How fast can SPS Pro Services get to my Seattle home?
We serve Seattle and nearby King County cities including Bellevue, Redmond, and Kirkland, and most no-heat calls in Seattle get a same-day appointment during our Monday through Friday, 8am to 6pm hours.
Is my furnace repair covered by any warranty?
Repairs come with a one-year labor warranty, and any replaced part carries the manufacturer's warranty. We document the repair and any permit work so you have records if you sell your Seattle home later.
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 Seattle and across the Seattle metro.
Prices reviewed July 2026
Also in Seattle
Other services our crew handles on the same routes.
Need furnace repair in Seattle?
Call (206) 427-8907 to schedule same-day furnace repair in Seattle with a licensed, L&I-registered technician.