IGNITOR - FURNACE

Shop furnace ignitors at Open To Public HVAC Parts in Dallas. We carry hot surface ignitors, silicon nitride ignitors, and spark igniters for gas furnaces from all major brands including Goodman, Rheem, Carrier, Trane, and Lennox. Factory OEM and universal aftermarket replacements available for same-day pickup.

Need help finding the right part?
We test parts at the counter and match the right replacement. Walk in or call ahead.
☎ Call (214) 340-9421 📍 Get Directions Mon–Fri 10–7  |  Sat 10–3
In-Store Pickup Only — Browse our catalog below, then visit us in Dallas or call (214) 340-9421 to purchase.
All
Air Distribution ▼
AIR GRILLES & REGISTERSB-VENT (DOUBLEWALL)DUCT FANDUCTINGINSULATIONSHEET METAL
Electrical Components ▼
CAPACITORCIRCUIT BREAKERCONDUITCONTACTORCONTROL BOARDFAN RELAYFUSESURGE PROTECTORTIME DELAY RELAYTRANSFORMERWIRE
Equipment & Systems ▼
CONDENSATE PUMPEQUIPMENTEQUIPMENT MOUNTMINISPLIT ACCESSORIES
Filters & Air Quality ▼
AIR FILTERCHEMICALSUV LIGHT
Furnace & Heating ▼
GAS VALVEIGNITOR - FURNACE
Motors & Blower Parts ▼
BLOWER MOTORBLOWER WHEELCONDENSER MOTORFAN BLADEINDUCER MOTORMOTOR MOUNT
Refrigeration ▼
COMPRESSORDRIER - REFRIGERANTEXPANSION VALVEPISTONREFRIGERANTREVERSING VALVESERVICE VALVESIGHTGLASS
Switches & Sensors ▼
DOOR SWITCHDRAIN SAFETY SWITCHFLAME SENSORHEAT SEQUENCERLIMIT SWITCHPRESSURE SWITCH - FURNACEPRESSURE SWITCH - REFRIGERANTTHERMAL LIMIT
Thermostats & Zone Controls ▼
THERMOSTATZONE SYSTEM
Tools & Supplies ▼
1/4" SERVICE CAPADHESIVEBRAZING CONSUMABLESCEILING ACCESS PANELCOPPERFASTERNERGAS PIPEOILPLASTIC DRAIN PANPVCSERVICE DISCONNECTSUPPLIESTOOLS

Signs You May Need a New Furnace Ignitor

The hot surface ignitor (HSI) is the glowing element that lights the gas in your furnace. They're fragile and wear out over time — cracking from thermal stress or burning out after years of use.

❌Furnace Won't Light — No Ignition at All▼
  • The inducer motor runs but you never see or hear ignition.
  • The ignitor should glow bright orange — if it doesn't glow, it's failed.
  • A cracked ignitor element is the most common cause.

Ignitors are fragile ceramic. Never touch the element with bare fingers — oils from your skin can cause premature failure.

🔥Ignitor Glows but Furnace Doesn't Light▼
  • The ignitor turns orange but the burners never ignite.
  • This may indicate a gas valve issue rather than the ignitor itself.
  • However, a weak ignitor that doesn't reach full temperature can also fail to light the gas.
🔄Furnace Takes Multiple Attempts to Light▼
  • The furnace cycles through 2–3 ignition attempts before finally lighting.
  • Each attempt takes longer than normal.
  • This indicates the ignitor is weakening and should be replaced before it fails completely.
👁Visible Cracks in the Ignitor Element▼
  • A hairline crack in the ceramic or silicon carbide element.
  • White or gray discoloration at the tip where it contacts flame.
  • Any visible damage means the ignitor should be replaced — it can fail at any time.
Not sure which part you need? Bring your old part to our Dallas store — our team will test it for free and help you find the right replacement.
📞 (214) 340-9421Mon–Fri 10 am – 7 pm  |  Sat 10 am – 3 pm

🎥 Watch our video tutorial: How to Replace a Furnace Ignitor