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Gas Furnaces

Gas Furnace Services in Bellevue

Professional Installation and Repairs for Gas Furnaces Across Redmond, Mountlake Terrace, and Beyond

A reliable gas furnace keeps your home comfortable through the coldest months—but when something goes wrong, it can throw off your entire day. Whether you’re noticing weak airflow, strange noises, or rising utility bills, ONESTOP is here to help. We provide expert gas furnace repair and replacement for homes in Bellevue, Redmond, Mountlake Terrace, and nearby areas.

We provide:

  • gas furnace installation
  • gas furnace repair
  • combustion and exhaust testing
  • thermostat upgrades and replacements
  • venting inspections and modifications

We work quickly and cleanly, and our membership plans offer extended parts warranties on new installs. You’ll never be left wondering what was done or why—we keep everything straightforward from start to finish.

Contact us today at (206) 456-7300 to schedule your gas furnace service in Bellevue and get started with a free estimate!

Built on Trust. Powered by Expertise.

  • Fast, Reliable Service 24/7
    From emergencies to routine calls, our team is always ready, day or night, to restore your comfort quickly.
  • Financing & Membership Plans
    We offer flexible financing and value-packed memberships to keep your home running smoothly all year.
  • Licensed, Bonded & Insured
    Your home is in safe hands with fully certified technicians and reliable, code-compliant service.
  • Locally Owned & Operated
    Serving Snohomish and King County with trusted, community-focused HVAC and electrical expertise.

Gas Furnace Solutions You Can Count On

Gas furnaces are a dependable option for heating your home, providing steady warmth even in the coldest weather. To keep them running safely and efficiently, it’s important to have an experienced team that knows how to work with them. At ONESTOP, we take every installation and repair seriously because we know your comfort—and safety—depends on it.

Working with us means that you benefit from:

  • Licensed, experienced techs – Every team member is trained to work on gas systems safely and efficiently. 
  • Free installation and repair estimates – You’ll know what to expect before we ever pick up a tool. 
  • Strong warranty support – Our membership plans offer up to 10 years of coverage on new installs. 
  • Fast response times – Same-day availability may be possible depending on the schedule. 
  • Locally owned, community-focused service – We treat your home the way we’d want ours treated.

Whether you’re replacing an outdated furnace or trying to figure out why your system keeps shutting off, we’re here to help.

    "I can't say enough good things about the technician that came and performed the work!"
    OneStop is a top-notch company! They installed our new heat pump in no time, and we couldn't have been more pleased with the quality and professionalism. Very polite, professional, and proficient!
    - Amanda O.
    "If you want great customer service and great quality work give them a call!"
    I have to say, Onestop is top-notch, and Adam was great to work with, did not give us the run-around of what we didn’t need, as most companies seem to do. Adam was upfront and honest. Fantastic prices, exceptional customer service!
    - Sarah H.
    "They have earned my trust and loyalty!"
    I was impressed by their professionalism, politeness, and knowledge to my inquiries, with efficiency they evaluated any issues in detail and problem-solved with skill, which assures me the job would be done right the first time.
    - Barbara L.
    "Fantastic services!"
    Absolutely amazing service from OneStop! They quickly diagnosed and fixed my heating issue, restoring the heat to my home in no time. Professional, efficient, and courteous throughout the process. Highly recommend!
    - Ryan J.
    "12/10 recommend them for all of your HVAC needs!"
    They went above and beyond our expectations, and I not only look forward to working with them in the future, but I feel confident and safe knowing they genuinely have our best interests in mind when doing their job.  You can tell they strive for excellence
    - Craig M.
    "The job was extremely well done!"
    Adam and Gram came in today to install a new furnace. The job was extremely well done and completed in half a day. I couldn't be happier with their service and the quality of materials they used.
    - Chris M.
    "Highly recommended, five stars!"
    It was amazing to watch OneStop Heating's team in action. Heat pumps are not small investments so it makes all the difference to know you've got a quality installation and the company will back its work with a sound maintenance program.
    - Ann M.
    "This team is my go-to for any HVAC work!"
    Adam and Gram did an amazing job with our HVAC setup. They were professional, efficient, and knew their stuff. The new system was installed quickly, and they made sure we understood everything before they left. Great experience from start to finish.
    - Michael B.
  • Trane
  • Generac
  • American Standard
  • Mitsubishi

Signs Your Gas Furnace Needs Repair or Replacement

Most gas furnace problems don’t show up all at once. Instead, you’ll notice small performance issues—strange noises, uneven temperatures, or rising utility bills—that eventually point to a system struggling to keep up. Recognizing those signs early can help you avoid unexpected breakdowns or safety concerns.

Here are the warning signs to watch for:

  • The furnace won’t stay on – This often points to a faulty flame sensor, bad thermocouple, or control board issues.
  • Burning or rotten egg odors – A potential gas leak is a serious safety issue and should be addressed immediately.
  • Cold air from the vents – Could indicate an issue with the pilot light, ignition system, or blower motor.
  • Unusual rattling, banging, or whistling sounds – These noises are often signs of loose parts or pressure issues within the system.
  • Yellow pilot light flame – A yellow or flickering flame can signal poor combustion and potential carbon monoxide risks

At ONESTOP, we troubleshoot your gas furnace thoroughly and explain your repair options clearly so you can make informed decisions with no pressure. If a replacement is more cost-effective, we’ll help you explore your options without upselling.

Call ONESTOP today at (206) 456-7300 or complete our online form to book your gas furnace installation or repair in Bellevue or the surrounding areas! Financing options are available for those who qualify.

Just One Stop and You're all set

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