{"product_id":"tempstar-hot-surface-igniter-for-t9mpx100l20a2-hsi-ignition-ships-today","title":"Tempstar Hot Surface Igniter for T9MPX100L20A2 — HSI Ignition | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis OEM hot surface igniter (HSI, part #1172533) lights the burners on your Tempstar T9MPX100L20A2 gas furnace. On a heat call the control board energizes the igniter until it glows red-hot, igniting gas metered by the VR8205S snap-disc gas valve (#1175705). The silicon-nitride element is fragile and wears with every heating cycle, making it one of the most common no-heat failure points. When the igniter cracks or burns out, the inducer and gas valve will cycle but the burners never light, and the furnace usually locks out on ignition failure.\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 (ICP \/ Heil)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIgnition System\u003c\/td\u003e\n\u003ctd\u003eGas (HSI)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelated Gas Valve\u003c\/td\u003e\n\u003ctd\u003e1175705 (VR8205S snap)\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 T9MPX100L20A2 gas furnace and shared across many ICP-family furnaces sold under the Tempstar, Heil, Comfortmaker, and Arcoaire brands. Handle the element only by its ceramic base, as skin oils shorten its service life. Verify the printed part number 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 electrical power at the switch and breaker; 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's position, bracket orientation, and wire harness before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug the igniter connector, remove the mounting screw(s), and lift the element out without touching the ceramic tip.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Seat the new igniter at the correct depth over the burner, secure the bracket, and reconnect the harness.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore gas and power, then watch a full cycle to 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\u003eInducer and gas valve cycle but burners never ignite\u003c\/li\u003e\n\u003cli\u003eFurnace locks out on ignition-failure code after multiple tries\u003c\/li\u003e\n\u003cli\u003eVisible crack, split, or burned spot on the igniter element\u003c\/li\u003e\n\u003cli\u003eIgniter shows no glow or measures open\/out-of-spec resistance\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":63021677576563,"sku":"1172533-GEN","price":34.0,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048456733043,"sku":"1172533","price":44.2,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-igniter-silicon-carbide-1172533_0bdfa6ac-c4e6-470b-b14a-3077ba5365df.jpg?v=1782960308","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-hot-surface-igniter-for-t9mpx100l20a2-hsi-ignition-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}