{"product_id":"tempstar-hot-surface-igniter-for-t9mpd050f12c1-hsi-direct-fit-ships-today","title":"Tempstar Hot Surface Igniter for T9MPD050F12C1 — HSI Direct-Fit | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis is the genuine OEM hot surface igniter (HSI, part number 1172533) for the Tempstar T9MPD050F12C1 furnace. On a call for heat, the control board energizes the igniter, which glows white-hot to ignite the gas as it flows from the gas valve into the burners. This listing covers the ignition assembly used with the Honeywell VR8205S snap-mount gas valve (companion OEM part 1172821). A failed igniter is one of the most common causes of no-heat calls: the element becomes brittle with thermal cycling and eventually cracks or fails to reach ignition temperature. Typical symptoms include the furnace clicking and trying to start but never lighting, repeated lockouts after several ignition attempts, and a visibly cracked or no-longer-glowing igniter element. Handle the new igniter only by its ceramic base — skin oils on the silicon 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\u003e1172533 (Igniter HSI)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompanion Part\u003c\/td\u003e\n\u003ctd\u003e1172821 (Gas Valve, Snap HW VR8205S)\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\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFits Model\u003c\/td\u003e\n\u003ctd\u003eT9MPD050F12C1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eDirect-fit replacement hot surface igniter for the Tempstar T9MPD050F12C1 gas furnace. As an ICP-built platform, the same HSI is shared across many Tempstar, Heil, and Comfortmaker furnaces of this series. Confirm your existing igniter matches OEM 1172533 before ordering.\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, verify zero voltage with multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove service panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photo all wires 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 from the burner assembly without forcing the brittle element.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new igniter handling it only by the ceramic base, secure the screw, and reconnect the harness per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power, call for heat, and watch the igniter glow and successfully light the burners.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFurnace clicks and attempts ignition but never lights\u003c\/li\u003e\n\u003cli\u003eIgniter no longer glows during a heat call\u003c\/li\u003e\n\u003cli\u003eVisible cracks or breaks in the ceramic\/silicon element\u003c\/li\u003e\n\u003cli\u003eFurnace locks out after repeated 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. National HVAC Parts fitment guarantee.\u003c\/p\u003e","brand":"Tempstar","offers":[{"title":"Direct Replacement","offer_id":63021682098547,"sku":"1172533-GEN","price":38.0,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048455192947,"sku":"1172533","price":49.4,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-igniter-silicon-carbide-1172533_e279dfac-552e-4670-945e-6b6e7e9c1d01.jpg?v=1782960246","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-hot-surface-igniter-for-t9mpd050f12c1-hsi-direct-fit-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}