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Furnace Installation in Seattle

Old furnaces fail at the worst time.

Financing options make a new furnace affordable now, not just eventually. No hidden fees. Every installation is backed by a 2-year satisfaction guarantee on top of a 10-year parts and labor warranty.

Over 183, verified 5-star customer reviews

Utility-verified for efficiency and workmanship

10-year parts and labor warranty

All brands serviced. Mitsubishi-level training standard.

Flexible plans, approval in minutes

Could You Get $4,000+ Toward a Heat Pump?

Heat pump rebates currently run up to $4,000, and we work with a subsidy program that can cover up to 60% of total project cost for qualifying homeowners.

A 2-minute survey with your results within 5 minutes!

Signs It's Time for a New Furnace

15+
years old

Most furnaces are built to last 15-20 years. If yours is in that range, replacement is likely more cost-effective than another repair.

Rising
Energy Bills

An aging furnace loses efficiency over time. If your bills are climbing without a change in usage, your system may be working overtime just to keep up.

Repairs Keep
Adding Up

One repair is normal. A second or third within a year or two usually means the unit is nearing the end of its life.

Uneven Heating Room to Room

Cold spots in older homes throughout Lynnwood, Edmonds, and Everett are often a sign the furnace can no longer heat the space evenly.

Strange or Increasing Noises

Banging, rattling, or grinding are signs of mechanical wear that usually get worse, not better, over time.

Yellow Burner
Flame

A healthy flame burns blue. Yellow can signal incomplete combustion and a carbon monoxide risk that shouldn’t wait.

Constant Cycling On and Off

A furnace that struggles to hold a steady cycle is often nearing failure, even if it’s still technically running.

Predates Efficiency
Standards

Many Snohomish County homes still run furnaces installed before modern efficiency codes. Newer systems can cut energy use significantly.

Repair or Replace? How To Decide

Both could be valid options, here’s how to know which one actually makes sense for your situation.

REPAIR MIGHT MAKE SENSE IF:

  1. Your furnace is under 10 years old
  2. This is the first issue you’ve had
  3. The repair cost is a few hundred dollars, not a few thousand
  4. Your energy bills have stayed consistent

REPLACEMENT MIGHT MAKE SENSE IF:

  1. Your furnace is 12+ years old
  2. You’ve had multiple repairs in the last 2 years
  3. The repair quote is 50% or more of a new system’s cost
  4. Your bills keep climbing despite regular maintenance
  5. You want a written estimate before deciding either way (our estimates are free!)

Why Homeowners Choose Cascadia Comfort

Installing a furnace is a big decision. Here’s what makes ours a safer one.

Financing That Fits Your Budget

A new furnace shouldn’t have to wait for a lump sum in savings. We offer financing options so you can install now and pay over time, without putting off a repair your home actually needs this winter.

Permits Included, No Surprises

Every installation quote includes the cost of city permitting, whether you’re in Mill Creek, Lynnwood, or Everett. No separate line item, no scramble to figure out paperwork after the fact, it’s handled before your tech ever shows up.

A 2-Year Satisfaction Guarantee

If something about your installation isn’t right, we make it right. This guarantee sits on top of your manufacturer’s warranty, giving you two full years where our team stands behind the work itself, not just the equipment.

10-Year Parts and Labor Warranty

Your new furnace comes with a 10-year manufacturer parts warranty, and we back that with our own 10-year labor warranty. If something needs attention down the road, you’re covered on both the part and the work, not just one or the other.

Local Techs Who Know the Area

Our team lives and works throughout Snohomish County and the greater Seattle area. We know the older housing stock in Edmonds, the tight crawlspaces in Kirkland, and the permitting quirks specific to this region.

Mitsubishi-Approved Standards

Mitsubishi only approves contractors who meet a higher bar for training and workmanship. While they’re not a furnace manufacturer, that approval reflects the same standard we bring to every installation we do.

We Explain Every Step

No jargon, no rushed explanations. Your tech walks you through what’s being installed, why, and what to expect, so you understand your new system instead of just trusting it blindly.

We Handle the Paperwork After, Too

We register your new equipment with the manufacturer so your warranty is active from day one, and we schedule your required city inspection so you’re not stuck tracking down an inspector. Installation day isn’t the finish line for us, it is for you.

How Your Free Estimate Works

No pressure, no upsells. Just a clear look at your options so you can make the right call for your home.

01

Book a Time That Works for You

Pick a day and window that fits your schedule. The estimate is completely free, no obligation to move forward.

02

Confirmation Right Away

You’ll get immediate confirmation your appointment is booked, plus a reminder the day before so it’s never a surprise.

03

Know Exactly Who’s Coming

We’ll call when we’re on the way, and text you a photo and short bio of your technician beforehand, so you know who’s walking through your door.

04

Options Built at Your Kitchen Table

Your tech reviews your home and current system, then builds good, better, and best options with you, right at the table. All three feature equipment rated top-tier by Consumer Reports, and your tech explains what actually separates them, not just the price tag.

05

Leave With a Clear Decision

No pressure to decide on the spot. You’ll walk away understanding your options, your pricing, and what makes sense for your home, so the decision feels manageable, not overwhelming.

From Decision to a Working Furnace

Here’s exactly what happens after you choose your option at the kitchen table.

1. Tell Us What You’d Like to Move Forward With
Take whatever time you need to ask questions. When you’re ready, just let us know which option you’ve chosen, no payment required at this stage.

2. We Handle Permits and Equipment
We start the permit process and order your equipment right away, so nothing sits waiting on paperwork.

3. Installation, Often Next Day
Most furnace installs happen within 1 to 4 days of your decision, and many can be scheduled as soon as the next day.

4. Install Day
Our crew arrives first thing in the morning. A furnace-only install typically takes 4 to 5 hours, a combined furnace and heat pump project is a full day. Either way, we remove the old unit, install and test the new one, and make sure everything’s running to spec before we walk you through how to use it.

5. City Inspections, Scheduled Around You
Furnace installations typically require two city inspections, one electrical, one mechanical. We coordinate directly with the city and work around your schedule, all you need to do is tell us what days and times work.

6. Payment After the Work Is Done
We don’t collect payment until the project is complete and everything’s passed inspection.

7. Two Years of Support, No Charge
Your system is backed by a 10-year parts and labor warranty, plus a 2-year satisfaction guarantee. If something feels too loud, or you just want a refresher on your thermostat, we’ll come back at no cost.

Rooted in the Community We Serve

Our founders grew up right here in the greater Seattle area, not in a boardroom somewhere else. We know why Edmonds homeowners fight to keep their character homes running efficiently, why Mill Creek’s newer developments still hit surprising ductwork quirks, and why a furnace replacement in a 1970s Shoreline rambler is a different job than one in a new build near Kirkland. This isn’t a franchise territory to us, it’s the neighborhoods we grew up in, the streets we walked to school on, and the community we still call home every summer at Lynnwood’s Fire Feast, the Edmonds Kind of 4th, or the Snohomish Historic Downtown street fair.

That local commitment goes beyond knowing the area. As a PSE Trade Ally approved contractor, we’re held to a standard for efficient, code-compliant work, and we back that up by partnering with organizations doing real work in this community. We’re proud to support Kicking Gas, a Snohomish County based program helping local homeowners access subsidies for electric heat pumps and a cleaner path off fossil fuel heating. Whether you’re planning a furnace replacement this year or exploring an electric alternative down the road, we’re invested in helping this community heat their homes safely, efficiently, and affordably, not just closing a sale.

PSE Trade Ally: Utility-verified contractor for Puget Sound Energy customers

Kicking Gas Partner: Helping Snohomish County homeowners access electrification subsidies

Free furnace installation support for local nonprofits, including:

  • Think Twice
  • Adopt A Stream
  • Habitat for Humanity
  • Kiwanis
  • The Arc of Snohomish County

What We Check Before, During, and After Your Furnace Replacement

Correct Sizing, Not Guesswork

A furnace that’s too big or too small wastes energy and wears out faster. We run a proper load calculation for your home, not a rough estimate based on your old unit’s size.

AFUE Ratings, Explained Simply

Efficiency ratings matter, but the numbers alone don’t mean much without context. We walk you through what AFUE actually means for your monthly bill, so you’re comparing options with real understanding, not just a spec sheet.

Old Furnace Removal Included

Your furnace replacement includes full removal and disposal of the old unit. One less thing to arrange, and nothing left behind for you to deal with.

Ductwork Checked, Not Assumed

Older homes throughout Snohomish County and the greater Seattle area often have ductwork that wasn’t built for a modern system. We check compatibility upfront, so it’s never a surprise mid-install.

Same-Day and Emergency Replacement Available

A furnace that fails in the middle of winter can’t wait a week. When it’s urgent, we prioritize getting a new system installed fast, often the same day.

What Seattle Homeowners Are Saying

Google star 1Google star 2Google star 3Google star 4Google star 5
The only downside of using Cascadia Comfort? You wish they just be the one that handle all sorts of work other than HVAC because they define what a fantastic service should be. They extremely responsive with communication, doesn't have any shady practice of charging you insane amount of visit fee that doesn't go towards the actual repair, reasonable pricing, and excellent use of technology to let you know who's coming and when are they coming for repair. The technician was extremely friendly and knowledge. He let me shadow him and explain every steps to me. I wish they can also be my landscaper, home repair, car repair....
Posted on Google Google
Tai chen (twnori) profile picture
Tai chen (twnori)
Google star 1Google star 2Google star 3Google star 4Google star 5
Fast efficient knowledgeable and courteous service. Much appreciated!
Posted on Google Google
Travis Groves profile picture
Travis Groves
Google star 1Google star 2Google star 3Google star 4Google star 5
Riley detailed the furnace/heat pump service and options for air filter replacement.
Posted on Google Google
bill fields profile picture
bill fields
Google star 1Google star 2Google star 3Google star 4Google star 5
Great experience, very knowledgeable and helpful, will use again for HVAC needs.
Posted on Google Google
Siuda75 profile picture
Siuda75
Google star 1Google star 2Google star 3Google star 4Google star 5
The folks from Cascadia were prompt, professional, and courteous. In addition to installing my heat pump, Regis made clear how it would operate and what I should do if I had any problems.
Posted on Google Google
Julie Titone profile picture
Julie Titone
Google star 1Google star 2Google star 3Google star 4Google star 5
Cascadia did a fantastic job replacing our furnace and installing a new heat pump for our home. Regis was super knowledgeable and pleasant to work with. Highly recommended!
Posted on Google Google
Sam Ma profile picture
Sam Ma
Google star 1Google star 2Google star 3Google star 4Google star 5
Nice company to work with. They were a low pressure high service install for our heat and AC. They answered all our questions, did the install in one day, and all worked well.
Posted on Google Google
Dan Haslam profile picture
Dan Haslam
Google star 1Google star 2Google star 3Google star 4Google star 5
Cascadia is a pleasure to work with and has very good and reasonable pricing. Riley, the technician who came out to service our furnace, AC, and heat pump systems, was a delight and extremely knowledgeable and helpful. I will definitely stick with Cascadia for all my HVAC needs long term.
Posted on Google Google
Leslie DeGasparis profile picture
Leslie DeGasparis
Google star 1Google star 2Google star 3Google star 4Google star 5
I am very pleased with Cascadia Comfort. Cascadia is responsive, professional, and fair in their pricing. They don't cut corners in their work or try to sell you on any unnecessary services or upgrades.
Posted on Google Google
John Folkestad profile picture
John Folkestad

Related Services

HEAT PUMPS

All-in-one heating and cooling, with rebates that can offset a big chunk of the cost.

MINI-SPLITS

Room-by-room comfort control, ideal for additions, or spaces without existing ductwork.

INDOOR AIR QUALITY

Filtration and air quality solutions that work alongside your cooling system.

Frequently Asked AC Repair Questions

How much does a new furnace installation cost?

Cost depends on your home’s size, the equipment you choose, and any additional work needed, ranging from $4k to $6k. During your free estimate, we’ll build good, better, and best options with real pricing, so you’re never guessing. 

Age, repair frequency, and rising energy bills are the biggest signals. If your furnace is 12+ years old or you’ve had multiple repairs recently, replacement is often the more cost-effective choice. See our repair vs. replace guide above for a full breakdown.

Most furnace-only installs take 4 to 5 hours. Combined furnace and heat pump projects typically take a full day. Either way, we can often schedule your install within 1 to 4 days of your decision, sometimes as soon as the next day.

Yes. We manage the entire permit process and coordinate both required inspections, electrical and mechanical, directly with the city. All you need to do is tell us what days and times work for you.

Not until the project is complete. There’s no down payment required before the project starts.

Yes. We offer financing options so a new furnace doesn’t have to wait for a lump sum in savings.

Heat pump rebates currently run up to $4,000, with a subsidy program that can cover up to 60% of eligible project costs. Take our free 2-minute survey above to see what you qualify for.

Every installation includes a 10-year manufacturer parts warranty and our own 10-year labor warranty, plus a 2-year satisfaction guarantee. If anything feels off, from noise levels to thermostat questions, we’ll come back at no charge.

We recommend American Standard and Ameristar systems as they are routinely ranked top 3, per Consumer Reports. Those systems are from the Trane family trusted by industry experts.

We install furnaces throughout Mill Creek, Lynnwood, Everett, Kirkland, Shoreline, Edmonds, Snohomish, and the greater Seattle area.

Ready to be cozy?

Same-day and next-day furnace installations from licensed, local techs. Get a straight price and a fast upgrade.