Locally-owned since 1977 • Licensed, bonded and insured in Washington (WA Contractor Reg. #HOMECCA785BD) • NATE-certified technicians • Carrier Factory Authorized Dealer
Heating installation in Sammamish from our Redmond team
Home Comfort Alliance replaces and installs gas furnaces, heat pumps and dual fuel systems across Sammamish, from Klahanie to Inglewood, with a room-by-room Manual J load calculation and the required City of Sammamish permits on every installation. PSE supplies Sammamish's electricity and natural gas, estimates are free, and we handle the PSE rebate paperwork for you.
Call (425) 645-0404 or book online. Furnace not working? See furnace repair in Sammamish.
Gas furnace, heat pump or dual fuel: which fits your Sammamish home?
| System | Best for | Sammamish rebate (October 2026) | Notes |
|---|---|---|---|
| New gas furnace | Keeping gas, lowest upfront cost | None today from PSE or Energy Smart Eastside | High-efficiency furnaces cut gas use |
| Dual fuel (heat pump plus gas furnace) | Keeping gas as backup on the coldest days | Energy Smart Eastside $1,000; PSE $1,500 hybrid for PSE gas customers | Ducted systems only (how dual fuel works) |
| All-electric heat pump | Leaving gas, heating and cooling in one system | Energy Smart Eastside $1,000, plus a $5,000 income-qualified bonus; PSE $4,000 income-qualified gas to heat pump | See heat pump installation in Sammamish |
We price all three on the estimate visit so you can compare. Details on the city program: Energy Smart Eastside rebates.
Signs it is time to replace your furnace
- It is 15 years old or more and needs repairs most winters.
- A repair quote is large compared with the furnace's age. A rule of thumb: multiply the age by the repair price, and if the result is over $5,000, get a replacement price too.
- Rooms heat unevenly, or upstairs stays cold while downstairs is warm.
- Your PSE gas bills keep rising for the same comfort.
Not sure? Book a furnace repair visit and ask for both prices in writing.
Choosing a new furnace
Efficiency is measured in AFUE: an 80% furnace turns 80% of its gas into heat, and a 95% or higher condensing furnace turns 95% or more into heat and vents through plastic pipe with a condensate drain (U.S. Department of Energy). Furnaces also come in single-stage, two-stage and variable-speed versions; the more stages, the steadier and quieter the heat. We match the venting, condensate drain and thermostat to the furnace you choose.
We are a Carrier Factory Authorized Dealer, Lennox Premier Dealer, Mitsubishi Electric Diamond Dealer and Quilt dealer, and we service all major brands.
What a replacement involves in Sammamish
Every installation starts with a room-by-room Manual J load calculation, so the new furnace or heat pump is sized for your home rather than matched to the old one. We check the ducts, venting and gas piping, then pull the permits. The City of Sammamish requires a permit to replace a furnace, and inside city limits the City, not L&I, issues electrical permits. A heat pump or air conditioner's outdoor unit may not go in the interior setback unless the adjacent property owner signs an agreement that is recorded before the permit is issued, so we plan placement with you at the estimate.
What does furnace replacement cost in Sammamish?
Your price depends on your home's heating needs, the furnace efficiency and features, ductwork and venting changes, and where the furnace sits. Get a price range in about 30 seconds with our free instant quote tool, then a technician confirms the exact price on a free in-home estimate. Square footage alone does not size a furnace; the Manual J does.
National benchmark, not our price: Angi lists gas furnace installation at about $3,800 to $10,000 (Angi, read October 2026).
Rebates for Sammamish heating upgrades (as of October 2026)
| Program | Amount | Who qualifies |
|---|---|---|
| Energy Smart Eastside | $1,000 instant rebate | Sammamish homes replacing an existing furnace or electric heat with a qualifying heat pump, installed by a network contractor; hybrid systems get the $1,000 only |
| Energy Smart Eastside income bonus | $5,000 | Households below 150% of area median income going fully electric (no furnace backup), by application |
| PSE hybrid heat pump | $1,500 | PSE gas customers adding a central ducted heat pump to a gas furnace; balance point 30°F or lower |
| PSE income-qualified gas to heat pump | $4,000 | Income-qualified PSE gas customers switching to a heat pump |
| New gas furnace on its own | No utility rebate | Neither PSE nor Energy Smart Eastside offers one today |
Energy Smart Eastside and PSE rebates can combine. Home Comfort Alliance is a PSE Trade Ally, and we handle the rebate paperwork for you. The federal 25C tax credit ended for equipment placed in service after December 31, 2025.
Financing through Salal Credit Union or Synchrony starts at $179/month* (financing).
*Financing through Salal Credit Union or Synchrony, subject to credit approval. Rates, terms and monthly payments depend on the amount financed, the plan and your credit. 0% interest options are available to qualifying customers. See lender for full terms.
Get a free estimateAn in-home visit and a written, upfront price before any work begins.
How installation works
- A free in-home estimate.
- A room-by-room Manual J load calculation.
- Written options and an upfront price for each, with the rebates it qualifies for.
- We pull the City of Sammamish permits, including the setback agreement step for outdoor units.
- Install day: most installations take between 4 and 10 hours, depending on the system type and how many systems we install.
- Inspection, rebate paperwork and first-year maintenance included.
Warranty and Home Comfort Club
New installations come with a 3-year Comfort Shield labor warranty on new installations, kept active with yearly maintenance. First-year maintenance is included. We also support the manufacturer's warranty on covered parts. Home Comfort Club members with a new system installed by Home Comfort Alliance get extended labor coverage for up to 5 years from installation.
Home Comfort Club plans are $15 a month per trade (HVAC, plumbing or electrical) or $30 a month for all three, with yearly maintenance or inspections and member pricing (membership plans).
Plateau homes and heating
Many Sammamish homes have two heating systems, one for each floor, and furnaces in a garage, attic or crawlspace. Cold mornings on the plateau show up first in rooms at the far end of the ducts. We check every system you have on the estimate and size each one with the Manual J.
Hours and after-hours help
Our phones are answered and bookings are accepted 24/7. Heating and cooling technicians work during business hours and are available after hours for qualifying emergencies ($330 after-hours dispatch fee instead of the $119).
Where in Sammamish we install
Our Redmond team installs heating systems across Sammamish, including Klahanie (part of Sammamish since 2016, ZIP 98029), Aldarra, Pine Lake and Inglewood, in ZIP codes 98074, 98075 and 98029.
A recent Sammamish heating installation
In August 2026 we replaced the furnace and cooling equipment in a Sammamish home with a Carrier dual-fuel system: a Carrier Infinity 80% gas furnace paired with a Carrier heat pump. The new system tied into the home's existing ductwork, gas line, venting and electrical, with a new refrigerant line set, an outdoor pad, a condensate drain and an electrical disconnect. The crew removed and disposed of the old equipment.
Keeping gas as backup let this homeowner add a heat pump for most of the year's heating and all of the cooling without giving up the furnace for the coldest days.
Sammamish furnace replacement FAQ
How much does furnace replacement cost in Sammamish?
It depends on your home's heating needs, the furnace efficiency and features, ductwork and venting changes and where the furnace sits. Get a price range in about 30 seconds with our free instant quote tool, then a technician confirms the exact price on a free site visit. For context, Angi lists gas furnace installation at $3,800 to $10,000 nationally; that is a national estimate, not our price.
How much to replace a furnace in a 2,000 sq ft house?
Square footage alone does not size a furnace. We run a room-by-room Manual J load calculation, which accounts for insulation, windows and layout, and price the furnace that calculation calls for. Our instant quote tool gives a range for your home in about 30 seconds.
Should I replace my gas furnace with a heat pump or a dual fuel system?
If you want the lowest upfront cost and keep gas, a new high-efficiency furnace is simplest. A dual fuel system adds a heat pump to a gas furnace and qualifies for Energy Smart Eastside's $1,000 rebate and PSE's $1,500 hybrid rebate for PSE gas customers. A fully electric heat pump qualifies for the most help, including Energy Smart Eastside's $5,000 income-qualified bonus. We price all three so you can compare.
Are there rebates for a new gas furnace in Sammamish?
Not today. PSE and Energy Smart Eastside offer no rebate for a gas furnace on its own. Rebates in Sammamish go to heat pumps, including dual fuel systems. The federal 25C tax credit ended for equipment placed in service after 31 Dec 2025.
What is the major disadvantage of a heat pump?
Output drops in very cold weather, and installing one can cost more upfront than a like-for-like furnace swap. Cold-climate models and dual fuel systems address the cold-weather concern, and Sammamish rebates narrow the price gap.
Do I need a permit to replace a furnace in Sammamish?
Yes. The City of Sammamish requires a permit to replace a furnace, and the City, not L&I, issues electrical permits inside city limits. We pull the required permits for every installation.
Where can a heat pump's outdoor unit go?
Not in the interior setback unless the adjacent property owner signs an agreement that is recorded before the permit is issued. We plan placement with you at the estimate.
How long does a furnace installation take?
Most furnace installations take between 4 and 10 hours.
What warranty comes with a new furnace?
3-year Comfort Shield labor warranty on new installations, kept active with yearly maintenance. First-year maintenance is included. We also support the manufacturer's warranty on covered parts, and Home Comfort Club members with a new system installed by Home Comfort Alliance get extended labor coverage for up to 5 years from installation.
Are furnace prices going up in 2026?
We do not forecast equipment prices. Your quote is an upfront, written price before any work begins, and our instant quote tool shows today's range in about 30 seconds.
Do you install furnaces in Klahanie and the rest of Sammamish?
Yes. Our Redmond team installs heating systems across Sammamish, including Klahanie (part of Sammamish since 2016, ZIP 98029), Aldarra, Pine Lake and Inglewood.
Sources: Energy Smart Eastside rebates (read October 29, 2026); PSE hybrid heat pump rebate and income-qualified heat pump rebate (read October 2026); City of Sammamish permits; U.S. Department of Energy, furnaces; Angi, furnace installation cost.
Why Choose Home Comfort Alliance in Sammamish?
Your Comfort is Our Promise
Reliable heating, air conditioning, plumbing and electrical service, all from one trusted company.
To educate and guide you through your options so you’ll find the right solution at the right price.
Knowledgeable and respectful workers who ensure both your own comfort during the installation process, and lasting comfort from your home systems.
Outstanding service, communication, and follow-up, so your home is comfortable now and for years to come.
Ready to get started in Sammamish?
Tell us what you need, and our Redmond team will set up an installation estimate or a repair visit with a written, upfront price.
Get an estimate
We will call you to set up the visit.