Hot Surface Ignitors
International Comfort Products
Hot surface ignitors light the burner during furnace startup by heating a ceramic element until it glows hot enough to ignite the gas. Found on most modern gas furnaces, they replaced older standing pilot lights and offer more efficient, on-demand ignition.
Furnace Part Source carries a wide range of hot surface ignitors for residential and light-commercial gas furnaces, boilers, and water heaters, including both OEM and cross-reference replacement options.
Common ignitor types include:
Before ordering, check the equipment data plate and the existing ignitor for the model number and part number. Confirm the mounting hole pattern and lead wire length, since ignitors that operate at the same voltage can still differ in shape and mounting style.
For best fit, compare:
Hot surface ignitors are fragile and should be handled carefully during installation. Avoid touching the ceramic element with bare hands, since skin oils can create hot spots and shorten the ignitor's lifespan.
Our catalog includes hot surface ignitors from Armstrong Air, Carrier, Trane, Lennox, Amana-Goodman, White-Rodgers, Robertshaw, York, Rheem-Ruud, and Heil Quaker, among other manufacturers, along with universal cross-reference options.
Not sure which hot surface ignitor you need? Use the model number, serial number, and part number from your unit to narrow the search, or contact Furnace Part Source for help identifying the correct replacement.
A failed ignitor typically will not glow when the furnace calls for heat, or it may glow dimly or crack. This usually prevents the burner from lighting and can trigger an ignition lockout.
Avoid touching the ceramic element directly, since skin oils can create hot spots that shorten the ignitor's lifespan. Handle it by the base or mounting bracket, or use gloves.
Silicon carbide ignitors are widely used and cost-effective, while silicon nitride ignitors typically offer faster warm-up and longer service life, often at a higher price point.
Many universal ignitors are designed to cross-reference several OEM part numbers. Confirm voltage, mounting hole pattern, and lead wire length before ordering a universal replacement.