Top-rated independent heating and cooling across California's Central Valley and the Sierra foothills
Ignitor & Flame Sensor Repair
We repair and replace furnace ignitors and flame sensors for homeowners across California and Nevada. If your furnace clicks or hums, runs for a few seconds and then shuts off, or cycles over and over without ever putting out warm air, a failed ignitor or a dirty flame sensor is one of the most common causes. Give us a call and we will diagnose the sequence properly. If you ever smell gas, leave the building first, call 911 or your gas utility, then call us.
Call (888) 381-2953- A real person answers
- Open 7 days
- Written quote before work starts
Taking calls until 5:00 PM PT
What the job involves
A furnace lights in a set order, and the ignitor and flame sensor are two steps in that order. The ignitor glows hot to light the burners. The flame sensor then confirms the flame actually exists, and if it cannot see one, the control board shuts the gas off within seconds. That safety shutdown is doing its job. Our work is finding out whether the part failed, whether it is only coated in residue, or whether something upstream is the real problem. Then we correct it and watch the furnace run through a full cycle.bard ignitor look fine and still be cracked, so we test rather than guess.
What we check and what we install
We start with the call for heat and follow the sequence: inducer, pressure switch, ignitor warm-up, gas valve, flame signal. We measure the ignitor and read the flame signal the control board is actually seeing, because a weak signal explains short cycling that a visual check never would. Flame sensors are often cleaned rather than replaced. Ignitors are replaced with the correct part for your furnace, since the wrong one burns out fast. We also look at the burners, the flame pattern and the filter, since restricted airflow shortens the life of both parts.
How we decide it is the right call
We decide by what the furnace does and what the readings say, not by swapping parts until something works. A cracked ignitor with no continuity is a clear replacement. A furnace that lights every time and then drops out at the same point usually means the flame sensor or its ground path. If the flame signal stays low after cleaning, the sensor goes. If the ignitor is fine and the flame is weak or lifting off the burners, the problem is gas pressure or a dirty burner and we say so instead of selling you a part.and we explain what we found before we do the work.
Other furnace repair work
The same on every visit
The quote comes first, in writing
Covering 123 cities across California, Nevada.Phones answered by people
Open 7 days, 8:00 AM to 5:00 PM PT.Independent of every manufacturer
Carrier, Trane, Lennox, Goodman and more. We are not an authorized dealer for any of them.Ignitor & Flame Sensor Repair — quick answers
Why does my furnace light and then shut off after a few seconds?
That is usually the flame sensor. It cannot confirm the flame, so the control board closes the gas valve as a safety measure. Cleaning or replacing the sensor normally fixes it, but weak flame is another cause.
Can a flame sensor be cleaned instead of replaced?
Often, yes. Residue builds up and blocks the signal. We clean it, then measure the flame signal the board reads. If it stays low after cleaning, the sensor is worn and replacement is the honest answer.
How long does an ignitor repair take?
Most ignitor or flame sensor jobs are done in a single visit once we have diagnosed the heating sequence. Time goes up if the part is unusual for your furnace or if a burner or airflow issue turns up too.
How it works
- Step 1
Tell us the symptom
Call or fill in the quote form. We ask what changed, when it started, and what the thermostat reads. That tells us whether to bring parts for a cooling fault or a heating fault.
- Step 2
We diagnose on site
A technician checks the thermostat, the electrical side, airflow through the filter and coil, refrigerant pressures, and the outdoor unit. You get told what failed and why, in plain words, before anything is replaced.
- Step 3
Repair and verify
We make the repair, then run the system and measure the results at the vents. If a part needs ordering, we say so and give you a realistic window instead of a vague promise.
- A real person answers
- Open 7 days
- Written quote before work starts
Why homeowners call us
- Built for real valley heatWe work in areas where afternoons sit above 110 degrees and systems run for months without a break. That shapes how we size repairs, check capacitors and contactors, and judge whether a compressor is genuinely done.
- Attic and package unitsPlenty of homes across the region run attic air handlers or rooftop package units instead of a garage furnace and a side-yard condenser. We are used to the access, the duct runs, and the drain issues those setups bring.
- Dust and debris we expectAg dust, cottonwood fluff and grass clippings pack condenser coils and starve a system of airflow. We clean what we find and show you the difference, rather than adding refrigerant to a unit that just could not breathe.
- Heating too, not only ACFurnace repair, heat pump faults and no-heat calls get the same attention as summer work. Ignition problems, cracked or failing components and short cycling all get diagnosed before we recommend anything larger.
- All major brands, gas & electricFrom Carrier and Trane to Lennox, Goodman, Rheem and Bryant, serviced independently.
- Straight answersWhen a replacement beats a repair, we tell you, sometimes before we roll a truck.
Ignitor & Flame Sensor Repair
Ready to book ignitor & flame sensor repair?
Describe the system and your ZIP. The written quote comes before any work.
- A real person answers
- Open 7 days
- Written quotes
- All major brands
- Gas & electric
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