Flat-rate furnace repair from licensed, local techs. Same-day appointments available, even on the coldest days.
Over 174, verified 5-star customer reviews
Utility-verified for efficiency and workmanship
No heat? We prioritize same-day calls
All brands serviced. Mitsubishi-level training standard.
Flexible plans, approval in minutes
No heat, no response from the thermostat, nothing.
Running but not actually warming the house.
Rooms near the furnace heat fine, rooms farther away don’t.
Banging, clicking, screeching, or rattling on startup.
Furnace turns on and off constantly, never reaching temperature.
Same usage, but the bill keeps climbing.
Keeps going out, or burns yellow instead of blue.
A brief odor on first startup of the season is normal. Persistent smell isn’t.
Understanding what’s actually being repaired helps you make confident decisions when a technician gives you a quote.
The ignitor lights the burners each heating cycle. When it cracks or wears out, the furnace runs but never produces heat. It’s one of the most common no-heat calls we get from Everett to Renton.
This separates your combustion gases from the air circulating through your home. A crack is a safety issue, not just a comfort one, and it’s why we always inspect this first on older systems.
A dirty or failing flame sensor can’t detect that the burners are lit, so the furnace shuts itself off as a safety precaution, even though it’s actually working. A quick clean often resolves it.
When the blower motor weakens or fails, warm air stops circulating even if the burners are running fine. Homeowners usually notice this as weak airflow or a furnace that runs constantly without heating evenly.
The simplest fix on this list, and one of the most common. A clogged filter restricts airflow, strains the system, and can trigger safety shutoffs. We check this on every service call in Mill Creek, Lynnwood, and Shoreline homes alike.
Sometimes the furnace itself is fine, but the thermostat or control board isn’t communicating with it correctly. Miswired or outdated thermostats are a frequent culprit in older Marysville and Arlington homes.
Standing pilot lights can go out from drafts, a dirty thermostat, or a failing thermocouple. Newer electronic ignition systems have their own failure points, but the fix is usually fast once diagnosed.
Every furnace repair starts with a full diagnostic, not a guess. Here’s what happens when we show up.
01
Full System Diagnostic
We check the ignitor, flame sensor, blower motor, heat exchanger, and thermostat to find the actual cause, not just the symptom.
02
Clear Explanation Before Any Work
You’ll know what’s wrong and what it costs before we touch a single part. No surprise charges.
03
Repair Using Quality Parts
We use manufacturer-approved parts, not the cheapest option available.
04
System Test Before We Leave
We confirm the furnace is heating properly, cycling correctly, and running safely before we call it done.
05
Cleanup
We leave your space the way we found it, every time, whether it’s a Seattle condo or an Arlington rambler.
Most furnace problems are fixable. Here’s how to tell when repair still makes sense, and when replacement saves you more in the long run.
REPAIR USUALLY MAKES SENSE IF:
REPLACEMENT IS WORTH CONSIDERING IF:
We’ll always give you a straight answer, even if that means a repair instead of a sale. If replacement really is the better move, we’ll walk you through what a furnace replacement looks like, no pressure, just the facts.
DIAGNOSE
1. Thermostat check — Confirm it’s calling for heat and communicating with the system correctly.
2. Power and safety switches — Check the breaker, service switch, and door interlock before touching anything mechanical.
3. Ignition sequence test — Watch the full startup: pilot or ignitor, gas valve, burner light-off.
4. Flame sensor and burner inspection — Look for corrosion, weak flame signal, or uneven burner flames.
5. Heat exchanger inspection — Check for cracks or corrosion since this affects both performance and safety.
6. Airflow and blower check — Test the blower motor, inspect the filter, and confirm air is moving through the ductwork properly.
DECIDE
7. Root cause confirmed — We explain what’s actually failing, in plain terms, not just “it’s fixed now.”
8. Upfront quote before any repair — You approve the cost and scope before we turn a single wrench.
REPAIR
9. Repair performed
10. Post-repair testing — We run a full heat cycle and check temperature rise, cycling behavior, and carbon monoxide levels.
11. Walkthrough — We explain what we fixed and answer any questions, no rush.
Furnace repair costs vary based on what’s actually wrong. Here’s what typically drives the price up or down.
Cascadia Comfort isn’t another name on a truck. We’re a PSE Trade Ally, a Kicking Gas partner, and a proud supporter of the local organizations that keep Snohomish County families warm all winter.
Seattle’s climate and aging housing stock create real furnace problems, and Cascadia Comfort is here to help. Here’s what we’ve noticed:
PSE Trade Ally: Utility-verified contractor for Puget Sound Energy customers
Kicking Gas Partner: Helping Snohomish County homeowners access electrification subsidies
Free furnace repair support for local nonprofits, including:
From standing pilot gas furnaces to modern electronic ignition systems, our techs are trained on the equipment actually installed in Seattle-area homes, not just the newest models.
Every visit starts with a full system check. You’ll know exactly what’s wrong before we recommend a repair, not after.
Every furnace repair includes a heat exchanger and carbon monoxide check. It’s not an upsell, it’s standard on every call.
Whether Cascadia Comfort put your furnace in or someone else did, we’ll work on it. No brand loyalty games.
Our founders grew up here. They’ve watched furnace and heating trends shift for decades, and know what actually holds up through a Puget Sound winter.
FURNACE REPLACEMENT
Ready for a new furnace instead of a repair? We’ll help you choose the right fit.
HEAT PUMP SERVICES
Heating and cooling in one system, built for Pacific Northwest winters and summers!
MINI-SPLIT REPAIR
Ductless issues fixed fast, no matter which brand you have installed.
INDOOR AIR QUALITY
Filtration and ventilation solutions that work alongside your heating system.
Most furnace problems are fixable, especially in systems under 15 years old. Replacement usually makes more sense once you’re paying for frequent repairs, or if a single repair costs more than half the price of a new unit. We’ll always give you a straight answer based on what we find, not what’s easiest to sell.
It depends on what’s wrong. A flame sensor cleaning or minor part swap runs on the lower end, while a blower motor or heat exchanger issue costs more. We diagnose first and quote a flat rate before any work starts, so you’re never guessing.
Usually, yes, if the repair is minor and the rest of the system is sound. It’s less worth it if you’re looking at a cracked heat exchanger, a furnace past 15-20 years old, or a system that’s already had multiple repairs. We’ll tell you which situation you’re in.
Same-day appointments are available across our Seattle to Arlington service area, including Mill Creek, Lynnwood, Everett, and Marysville. No heat calls get priority scheduling.
We service all major furnace brands, gas and electric, regardless of who installed it. You don’t need to have used Cascadia Comfort originally for us to work on your system.
Yes. Every repair is backed by a workmanship warranty of 2 years, and we’ll walk you through the specifics for your system before we start.
A brief dusty smell on the season’s first startup is normal, that’s just dust burning off the heat exchanger. A persistent smell, or anything that smells like gas or smoke, means you should shut the system off and call us right away.
Typically financing is not available for repairs. We do offer multiple interest free options on installations and replacements.
Same-day and next-day appointments available. Don’t let a cold house wait.
