{"product_id":"tempstar-hot-surface-igniter-for-t8mpn100j20b1-oem-1172533-hsi-ships-today","title":"Tempstar Hot Surface Igniter for T8MPN100J20B1 — OEM 1172533 HSI | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis genuine OEM hot surface igniter (HSI, part number 1172533, \"IGNITOR HSI\") lights the burners on the Tempstar T8MPN100J20B1 gas furnace. On a call for heat the control board energizes the igniter, it glows white-hot, and the Honeywell VR8205S snap-mount gas valve (OEM 1172821) opens to ignite the burners. The igniter is a brittle silicon-carbide or silicon-nitride element and is one of the most common furnace wear parts. Failure symptoms include no ignition and no heat, a furnace that clicks and runs the inducer but never lights, a visibly cracked or broken igniter element, or an igniter that no longer glows when commanded.\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\u003e1172533\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDescription\u003c\/td\u003e\n\u003ctd\u003eIgniter, Hot Surface (HSI)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eHot surface igniter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eTempstar (ICP \/ Heil family)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePairs With\u003c\/td\u003e\n\u003ctd\u003eGas valve 1172821 — Honeywell VR8205S snap-mount HSI valve\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eFurnace burner ignition\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eOEM — exact 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 T8MPN100J20B1 100,000 BTU gas furnace and related ICP \/ Heil \/ Comfortmaker furnaces using the 1172533 hot surface igniter alongside the VR8205S (1172821) snap-mount gas valve. Confirm your igniter mounting bracket and connector match before ordering. This is a direct OEM replacement for 1172533.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety First\u003c\/strong\u003e — Shut off the gas, disconnect power at the furnace switch and breaker, and verify zero voltage with a multimeter.\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 wiring connector before disconnecting.\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. Handle only by the ceramic base — never touch the element.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new igniter in the exact original position so it sits in the burner flame path, reconnect the wiring per your photo, and secure the screw without over-tightening.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore gas and power, call for heat, and confirm the igniter glows, the burners light, and flame is sensed.\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 — inducer runs but burners never ignite\u003c\/li\u003e\n\u003cli\u003eIgniter element is cracked, broken, or pitted\u003c\/li\u003e\n\u003cli\u003eIgniter does not glow when energized\u003c\/li\u003e\n\u003cli\u003eFurnace locks out after several failed ignition attempts\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":63021763854707,"sku":"1172533-GEN","price":32.95,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048453652851,"sku":"1172533","price":42.84,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-igniter-silicon-carbide-1172533_da5e5e92-9609-4312-ac09-997d3dbd3bc6.jpg?v=1782960187","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-hot-surface-igniter-for-t8mpn100j20b1-oem-1172533-hsi-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}