{"product_id":"tempstar-hot-surface-igniter-for-t8mpn100f14b2-furnace-hsi-kit-ships-today","title":"Tempstar Hot Surface Igniter for T8MPN100F14B2 Furnace — HSI Kit | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis OEM hot surface igniter (part number 1172533, \"IGNITOR HSI\") provides reliable ignition for the Tempstar T8MPN100F14B2 gas furnace. On a call for heat the control board sends voltage to the igniter, which glows red-hot to ignite the gas at the burners as the Honeywell VR8205S gas valve (OEM 1175705) opens. Hot surface igniters are a common wear item — the brittle silicon-carbide or silicon-nitride element degrades with each heating cycle and eventually cracks or fails to reach ignition temperature. When the igniter fails, the furnace will run its inducer and pre-purge but never light, often locking out after several failed ignition attempts. Replacing the igniter restores dependable, on-demand heating.\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\u003eRelated Gas Valve\u003c\/td\u003e\n\u003ctd\u003e1175705 (Honeywell VR8205S)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eGas Furnace Ignition\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFits Model\u003c\/td\u003e\n\u003ctd\u003eT8MPN100F14B2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eBuilt for the Tempstar T8MPN100F14B2 furnace and used across ICP-family furnaces (Heil, Comfortmaker, Arcoaire) sharing the same hot surface ignition system. The companion gas valve referenced on this model is the Honeywell VR8205S (OEM 1175705). Confirm the igniter mounting bracket and plug match your existing part 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, 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 plug before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug the igniter connector and remove the mounting screw(s). Handle the new igniter only by its ceramic base — never touch the fragile element.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new igniter so it aligns over the burner, then reconnect the plug per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore gas and power, then run a heat cycle and confirm the igniter glows and the burners light promptly.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFurnace inducer runs but burners never ignite\u003c\/li\u003e\n\u003cli\u003eIgniter does not glow or glows weakly\u003c\/li\u003e\n\u003cli\u003eVisible crack or break in the igniter element\u003c\/li\u003e\n\u003cli\u003eFurnace locks out after repeated failed ignition attempts\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":63021766869363,"sku":"1172533-GEN","price":34.95,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048453456243,"sku":"1172533","price":45.44,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-igniter-silicon-carbide-1172533_8157228b-5ace-424f-9cd6-9e3ffd6a35a7.jpg?v=1782960180","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-hot-surface-igniter-for-t8mpn100f14b2-furnace-hsi-kit-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}