{"product_id":"tempstar-hot-surface-igniter-sensor-for-tde125j20g1-silicon-nitride-hsi-ships-today","title":"Tempstar Hot Surface Igniter \u0026 Sensor for TDE125J20G1 — Silicon Nitride HSI | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis is the genuine OEM hot surface igniter and flame sensor (part number 1009524) for the Tempstar TDE125J20G1 furnace. The hot surface igniter (HSI) glows to roughly 2,000°F on each call for heat to light the burners, and the integrated sensor confirms flame so the gas valve stays open. This silicon-nitride-style HSP igniter is the most common point of failure in a modern furnace: the element is brittle and degrades with every cycle. When it cracks or its resistance drifts, the furnace blows cold air, locks out after several ignition attempts, or short-cycles. A failed flame-sense function will light the burners and then shut them off within seconds. Installing the factory igniter\/sensor restores reliable ignition and flame proving.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\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\u003eDescription\u003c\/td\u003e\n\u003ctd\u003eIgnitor\/Sensor HSP SK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eHot Surface Igniter with Flame Sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElement\u003c\/td\u003e\n\u003ctd\u003eSilicon Nitride (SK style)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eTempstar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFits Model\u003c\/td\u003e\n\u003ctd\u003eTDE125J20G1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eOEM Direct Replacement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eDirect OEM fit for the Tempstar TDE125J20G1 and matching ICP\/Heil\/Comfortmaker gas furnaces using the SK-style hot surface igniter\/sensor. Confirm the igniter style and mounting bracket against your existing part before ordering.\u003c\/p\u003e\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety First\u003c\/strong\u003e — Shut off gas and disconnect power at the furnace switch; verify zero voltage before working.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the burner compartment door to expose the igniter at the burner assembly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph the igniter bracket position and the wire\/connector routing before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug the igniter harness, remove the mounting screw, and carefully withdraw the brittle igniter without touching the element.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Seat the new igniter (handle by the 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 gas and power, call for heat, and confirm the igniter glows, burners light, and flame is proven without lockout.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFurnace blows cold air and never lights the burners\u003c\/li\u003e\n\u003cli\u003eControl board locks out after three or more failed ignition attempts\u003c\/li\u003e\n\u003cli\u003eIgniter does not glow, or has a visible crack or blister\u003c\/li\u003e\n\u003cli\u003eBurners light then shut off within seconds (lost flame sense)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eShipping \u0026amp; Returns\u003c\/h3\u003e\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":63021648347507,"sku":"1009524-GEN","price":39.0,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048451064179,"sku":"1009524","price":50.7,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-igniter-silicon-nitride-1009524_3d747e7f-5093-4ad0-8e37-4373fcba7740.jpg?v=1782960083","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-hot-surface-igniter-sensor-for-tde125j20g1-silicon-nitride-hsi-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}