{"product_id":"tempstar-hot-surface-igniter-sensor-for-t8mpt125j20a1-silicon-nitride-ignitor-ships-today","title":"Tempstar Hot Surface Igniter\/Sensor for T8MPT125J20A1 — Silicon Nitride Ignitor | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis genuine OEM hot surface igniter\/sensor (part number 1009524) provides reliable ignition for the Tempstar T8MPT125J20A1 gas furnace. When the control board calls for heat, the igniter heats to a high surface temperature to light the burner gas, and in this combined igniter\/sensor design it also confirms flame presence for the safety circuit. It is one of the most frequently replaced furnace parts because the heating element becomes brittle and cracks with thousands of ignition cycles. Typical failure symptoms include no heat with the blower running, repeated ignition lockouts, an igniter that glows but never lights the burner, or an igniter that no longer glows at all. Handle the new igniter only by its ceramic base — skin oils on the element shorten its life.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpec\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e1009524\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eHot Surface Igniter \/ Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eTempstar (ICP \/ Heil)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElement\u003c\/td\u003e\n\u003ctd\u003eSilicon Nitride\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eIgnition + Flame Sensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eOEM Replacement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eDesigned for the Tempstar T8MPT125J20A1 gas furnace and compatible ICP-family units (Tempstar, Heil, Comfortmaker) using a silicon nitride hot surface igniter\/sensor. Match the mounting bracket and connector to your original before installing.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety First\u003c\/strong\u003e — Disconnect power at the furnace switch and breaker, then verify zero voltage with a multimeter and shut off the gas supply.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the burner-compartment service panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph the igniter position, bracket orientation, and wire routing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug the igniter connector, remove the mounting screw, and carefully withdraw the old igniter without striking the element.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new igniter by its ceramic base only, secure the bracket, and reconnect the harness per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and gas, then run a heat cycle and confirm the igniter glows, lights the burner, and the flame stays lit.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNo heat while the blower still runs\u003c\/li\u003e\n\u003cli\u003eIgniter glows but the burner never lights\u003c\/li\u003e\n\u003cli\u003eIgniter does not glow at all\u003c\/li\u003e\n\u003cli\u003eRepeated ignition lockouts or short-cycling on startup\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eShipping \u0026amp; Returns\u003c\/h3\u003e\n\u003cp\u003eShips same day before 3 PM CST. 30-day returns. Backed by the National HVAC Parts fitment guarantee.\u003c\/p\u003e","brand":"Tempstar","offers":[{"title":"Direct Replacement","offer_id":63021703299443,"sku":"1009524-GEN","price":34.0,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048462074227,"sku":"1009524","price":44.2,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-igniter-silicon-nitride-1009524_f1a592f9-679b-4186-ac50-ffb19946117c.jpg?v=1782960457","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-hot-surface-igniter-sensor-for-t8mpt125j20a1-silicon-nitride-ignitor-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}