{"product_id":"tempstar-hot-surface-igniter-for-t8dnl050b12b1-120v-silicon-carbide-hsi-ships-today","title":"Tempstar Hot Surface Igniter for T8DNL050B12B1 — 120V Silicon Carbide HSI | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis OEM hot surface igniter (HSI) is the ignition source for the Tempstar T8DNL050B12B1 gas furnace. When the thermostat calls for heat, the furnace control board sends 120V to this silicon-carbide element, which glows white-hot to ignite the gas at the burners. It is one of the most common furnace failure points because the brittle element degrades with every heating cycle. Symptoms of a failed igniter include no ignition, the furnace blower running with cold air, repeated lockouts after several ignition attempts, or a visibly cracked or burned element. This listing covers OEM part 1172533 (IGNITOR HSI); the related gas valve assembly part 1172821 (VALVE N HSI SNAP HW VR8205S) shares the same ignition system on this model.\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\u003e1172533\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eHot Surface Igniter (HSI)\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\u003eElement\u003c\/td\u003e\n\u003ctd\u003eSilicon Carbide\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage\u003c\/td\u003e\n\u003ctd\u003e120V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFit\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\u003eEngineered for the Tempstar T8DNL050B12B1 gas furnace and other ICP\/Heil\/Comfortmaker family furnaces using the same ignition control. Always confirm your existing igniter part number and mounting bracket before installing.\u003c\/p\u003e\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety First\u003c\/strong\u003e — Disconnect power at the furnace switch and breaker; shut off the gas. Verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the furnace burner compartment service panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph the igniter wiring, connector, and bracket position before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug the igniter connector and remove the mounting screw. Handle the old igniter by the ceramic base only.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new igniter without touching the element with bare fingers; reconnect the harness per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore gas and power, then run a full heat cycle and confirm the element glows and the burners light.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFurnace blows cold air or fails to ignite\u003c\/li\u003e\n\u003cli\u003eRepeated ignition lockouts after 3-4 tries\u003c\/li\u003e\n\u003cli\u003eNo glow visible at the igniter during a call for heat\u003c\/li\u003e\n\u003cli\u003eCracked, chipped, or burned-through element\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":63021780828531,"sku":"1172533-GEN","price":32.0,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048451391859,"sku":"1172533","price":41.6,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-igniter-silicon-carbide-1172533_86ab246d-f7bc-43cc-982a-2f42a6112ce5.jpg?v=1782960097","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-hot-surface-igniter-for-t8dnl050b12b1-120v-silicon-carbide-hsi-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}