Locally-owned since 1977 • Licensed, bonded and insured in Washington (WA Contractor Reg. #HOMECCA785BD) • WA Electrical Contractor Lic. #HOMECCA782DC • NATE-certified technicians • Carrier Factory Authorized Dealer • Mitsubishi Electric Diamond Dealer • Lennox Premier Dealer
Furnace repair and heating service in Maple Valley, WA
Home Comfort Alliance repairs, replaces and maintains furnaces in Maple Valley from our Sumner headquarters. Repair visits carry a $119 dispatch fee, you approve an upfront price before we start, and every gas repair ends with a carbon monoxide check.
Maple Valley rates. Repair: $119 dispatch; diagnostic $72 or $130. After hours, qualifying emergencies: $330 instead of the $119. Tune-up: $230, or $180 for Club members. Replacement furnace: a free estimate, an instant quote, and an install that usually takes 4 to 10 hours.
Ring (425) 645-0404 or schedule online. Weighing a furnace against a heat pump? Read heat pump installation in Maple Valley.
Furnace repair in Maple Valley
Many Maple Valley neighborhoods are subdivisions built over the last few decades, and plenty of the gas furnaces that came with those homes are now at the age where repairs pick up. We fix all major brands, and you see the repair price before any work begins.
| Service | Price |
|---|---|
| Dispatch fee (repair visit) | $119 |
| Standard diagnostic | $72 |
| Deeper diagnostic | $130 |
| After-hours dispatch, qualifying emergencies | $330, instead of the $119 |
| Furnace ignitor replacement | $353 to $821 |
Prices as of September 2026. Dispatch and diagnostic fees are listed separately and are not added together into one price. More detail: what furnace repairs cost.
What usually stops the heat: clogged filters and closed vents that trip the high-limit switch, worn ignitors and dirty flame sensors, inducer motors and pressure switches, blower motors and thermostats. Our trucks carry the common parts, and we finish every gas repair with a carbon monoxide check (carbon monoxide and your furnace).
Smell gas? First, get out of the house. Next, phone 911 and Puget Sound Energy at 1-888-225-5773. Only call us after the house is safe. (PSE natural gas safety; what to do if you smell gas).
No heat after hours
Our phones are answered and bookings are accepted 24/7. Our Sumner heating technicians work business hours and go out after hours for qualifying emergencies, such as a furnace blowing cold air on a frosty night, with a $330 after-hours dispatch fee instead of the $119. We are closed on holidays (after-hours furnace repair).
Furnace tune-ups
Most winter no-heat calls in Maple Valley subdivisions come down to airflow or ignition, and a yearly tune-up finds those early. Gas furnaces: $230, or $180 for Home Comfort Club members. Oil furnaces: $336, or $288 for members. We go over the burners, ignition, flame sensor, blower, electrical connections, safety controls and filter. Carbon monoxide testing and heat exchanger inspection are not included in a tune-up (furnace maintenance, Home Comfort Club).
Is your original furnace due? Repair or replace
A furnace that came with the house may still have years left, or it may be at the point where repairs stack up. A single failed part on a sound furnace is usually worth fixing. Our technician gives you a repair price and a replacement price side by side, so the decision is yours (furnace repair, furnace replacement).
When a Maple Valley home needs a new furnace
The cost of your new furnace reflects the home's heating and cooling needs, the add-ons, the number of rooms on the system and the install location. Open our free instant quote tool for a range in roughly 30 seconds; a technician locks in the exact price on a free visit. For each subdivision home we size the furnace with a room-by-room ACCA Manual J load calculation, handle the permits, and finish most installs in 4 to 10 hours. We are a Carrier Factory Authorized Dealer and Lennox Premier Dealer and service every major brand.
New installations come with a 3-year Comfort Shield labor warranty, kept active with yearly maintenance. First-year maintenance is included. Home Comfort Club members with a new system installed by Home Comfort Alliance get extended labor coverage for up to 5 years from installation.
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 an estimateA comfort advisor will call you to set up your visit.
Furnace or heat pump?
Puget Sound Energy supplies both electricity and natural gas in Maple Valley. PSE did not list a gas furnace rebate when we checked in November 2026, but it does offer a hybrid rebate when you add a ducted heat pump to a gas furnace, which keeps the furnace for the coldest nights. Amounts and rules are on our Maple Valley heat pump page.
Permits and utilities in Maple Valley
In city limits, furnace replacements need a mechanical permit from the City of Maple Valley, and electrical permits come from Washington L&I (L&I electrical permits). A Maple Valley address outside city limits means King County handles it. We take care of every permit an install needs.
How a repair visit works
- Call (425) 645-0404 or book online, day or night.
- Your technician checks the furnace, filter, vents, thermostat and venting to find the cause.
- We quote the repair before starting and wait for your go-ahead.
- We carry the usual parts on the truck, so a lot of repairs are done in one trip.
- We test the furnace through a full heating cycle and, on gas equipment, check for carbon monoxide.
A recent Maple Valley after-hours call
On a Sunday in late September 2026 a Maple Valley homeowner called after hours because the gas furnace was running but blowing cold air. Our on-call technician found a limit switch code on the furnace, tested the high-limit and rollout switches (both fine), and traced the problem to badly clogged filters and four closed supply vents that had starved the furnace of airflow. He pulled the filters, reset the system and ran it through a full heating cycle before leaving, with no parts needed. Keeping vents open and filters fresh prevents most calls like this one.
Where in Maple Valley we work
We repair and replace furnaces throughout Maple Valley (98038) and the unincorporated King County areas around it, from our Sumner headquarters at 1524 45th St E, Suite 102. Nearby: Kent, Auburn, furnace repair in Buckley and Bonney Lake.
Maple Valley furnace repair and heating FAQ
Who can fix my furnace in Maple Valley?
Home Comfort Alliance, at (425) 645-0404. Technicians from our Sumner headquarters repair gas and oil furnaces in Maple Valley and nearby King County areas. Our phones are answered and bookings are accepted 24/7.
What do furnace repairs in Maple Valley cost?
Expect a $119 dispatch fee for the visit, plus a diagnostic of $72 (standard) or $130 (deeper). We give you the repair price up front and only start once you approve it. As one example, a new ignitor runs $353 to $821.
Can you come out at night or on a weekend?
For qualifying heating emergencies, yes. A furnace blowing cold air on a cold night qualifies, and the after-hours dispatch fee is $330 in place of the usual $119.
My house smells like gas. What should I do?
Leave right away. Call 911 and then Puget Sound Energy at 1-888-225-5773. When it is safe, call us and we will repair the furnace.
Will you check for carbon monoxide after a repair?
Yes. We check for carbon monoxide at the end of every gas furnace repair before we leave your Maple Valley home.
What is the cost of a furnace tune-up in Maple Valley?
Gas furnaces are $230, or $180 for Home Comfort Club members. Oil furnaces are $336, or $288 for members. Carbon monoxide testing and heat exchanger inspection are not part of the tune-up.
Is my furnace worth repairing?
If it is fairly young and one part failed, usually yes. If it is the original furnace, keeps breaking or needs an expensive repair, we price a replacement next to the repair so you can compare.
What will I pay for a new furnace in Maple Valley?
Pricing follows the home's heating and cooling needs, the add-ons, how many rooms are served and the install spot. A range takes about 30 seconds on the free instant quote tool, and a technician sets the exact price at a free visit.
How long does it take to install a new furnace?
Most take 4 to 10 hours. We size each furnace with a room-by-room ACCA Manual J load calculation before quoting.
Will I need a permit to replace my Maple Valley furnace?
Yes. In city limits the City of Maple Valley issues the mechanical permit and Washington L&I issues electrical permits; outside city limits, King County does. We pull every permit required.
Can I get a rebate on a new gas furnace in Maple Valley?
Puget Sound Energy supplies gas in Maple Valley and had no gas furnace rebate listed when we checked in November 2026. Pair a ducted heat pump with your furnace and PSE offers a hybrid rebate. Our Maple Valley heat pump page has the details.
How is a new furnace warrantied?
New installations come with a 3-year Comfort Shield labor warranty, kept active with yearly maintenance. First-year maintenance is included. Home Comfort Club members with a new system installed by Home Comfort Alliance get extended labor coverage for up to 5 years from installation.
We relied on: PSE natural gas safety and PSE heating rebates (both read November 3, 2026), plus Washington L&I electrical permits.
Why Choose Home Comfort Alliance in Maple Valley?
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.
Furnace trouble in Maple Valley?
Tell us what is going on with the furnace. Our Sumner office will schedule a repair or a replacement estimate and write the price down before work starts.
Get an estimate
We will call you to set up the visit.