Top-rated independent heating and cooling across Palm Beach County and the Treasure Coast
Ignitor & Flame Sensor Repair
We repair and replace furnace ignitors and flame sensors for homeowners across Florida, usually when the heat runs for a few seconds and then quits. A cracked ignitor will not glow, and a sooted or worn flame sensor tells the control board there is no flame, so the furnace shuts the gas off as designed. If your heater cycles on and off without warming the house, call us and describe what you hear. You can check the thermostat setting and the filter first. If you ever smell gas, leave the building, call 911 or the gas utility, then call us.
Call (888) 878-4879- A real person answers
- Open 7 days
- Written quote before work starts
Taking calls until 5:00 PM ET
What the job involves
We start at the furnace with the burner compartment open and the sequence watched from the beginning. A technician confirms the call for heat reaches the board, watches whether the ignitor glows, and counts how long the flame stays lit before the unit locks out. From there we read the sensor signal and inspect the ignitor for hairline cracks. Most visits end with a cleaned or replaced sensor, a new ignitor, or both. We reassemble, run several full cycles, and confirm the furnace holds a flame.
What we check or install
We check the ignitor resistance and mounting position, the flame sensor rod and its wire, the ground path, burner condition, and the control board's lockout history. Coastal and near-coastal homes give us corroded terminals and pitted metal more often than inland ones, so we look at connections closely. Replacement parts are matched to the furnace model, not approximated. If we find a cracked heat exchanger, a failed gas valve, or wiring damage behind the fault, we explain what we found and what the repair path looks like before touching it.
How we decide it is the right call
Short cycling on a call for heat is the pattern that points here. If the furnace lights and then drops out after a few seconds, the flame sensor is the first suspect. If nothing lights at all and the inducer runs, we look at the ignitor. We do not sell a part because it is the easy answer. Weak signal readings, visible cracking, or repeat lockouts on the board give us something to stand on. When the real problem sits elsewhere, we say so and quote the actual work.
Other furnace repair work
The same on every visit
The quote comes first, in writing
Covering 55 cities across Florida.You reach a person, not a menu
Open 7 days, 8:00 AM to 5:00 PM ET.All major brands serviced
Carrier, Trane, Lennox, Goodman and more. We are not an authorized dealer for any of them.Ignitor & Flame Sensor Repair — quick answers
Can a dirty flame sensor be cleaned instead of replaced?
Often yes. A light oxide film wipes off and the signal comes back to normal. If the rod is pitted, bent, or the reading stays weak after cleaning, replacement is the honest fix rather than a repeat call in a month.
Why does my furnace light and then shut off?
Usually the flame sensor is not confirming flame, so the control board closes the gas valve within seconds. That safety response is working correctly. The sensor, its ground, or the burner flame itself needs attention.
How long does this repair take?
Most ignitor and flame sensor work is a single visit. Testing the sequence, replacing the part, and running the furnace through several cycles to confirm it holds is typically done in one appointment.
How it works
- Step 1
Tell us the symptom
Call or fill in the quote form with what you hear, smell or feel. Warm air, ice on the lineset, a humming outdoor unit. That detail helps us load the right parts before we drive out.
- Step 2
We diagnose on site
We check the thermostat, the air handler, the condenser and the electrical side, then measure what the system is actually doing. You get a plain explanation of the fault and the repair options before we start.
- Step 3
We repair and verify
Once the repair is done we run the system and confirm temperature split, drainage and airflow at the vents. If a part is on order, we tell you the timeline instead of leaving you guessing.
- A real person answers
- Open 7 days
- Written quote before work starts
Why homeowners call us
- We plan for salt airCoastal humidity and salt eat coils, contactors and cabinet screws. We look for corrosion during every visit and treat it as part of the diagnosis, not an afterthought, so a repaired system does not fail again in the same spot.
- Built for constant runtimeFlorida systems run most of the year, so bearings, capacitors and drain lines wear faster than the manual suggests. We size repairs around that reality and point out the components likely to be next in line.
- Old houses and new onesIsland properties often hide ductwork in tight, damp spaces, while tract homes tend to have short, undersized returns. We have worked both and adjust the approach rather than forcing one standard fix.
- Clear talk, no upsell theatreWe tell you what failed, what it takes to fix it, and whether repair or replacement makes more sense for the age of the equipment. If a repair will hold, we say so and get on with it.
- All major brands, gas & electricIndependent service on Carrier, Trane, Lennox, Goodman, York and the rest.
- 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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