{"product_id":"tempstar-hot-surface-igniter-for-t8mpn150j20b1-hsi-ships-today","title":"Tempstar Hot Surface Igniter for T8MPN150J20B1 — HSI | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM hot surface igniter (HSI, part #1172533) lights the gas burners on your Tempstar T8MPN150J20B1 furnace. When the thermostat calls for heat, the control board energizes the igniter, which glows white-hot and ignites the burner gas as the gas valve (compatible OEM valve #1172821, VR8205S) opens. Hot surface igniters are fragile ceramic elements that wear out from repeated heating cycles. The classic symptom of a failed HSI is a furnace that runs its inducer and blower but never produces heat because the burners fail to light. A cracked, broken, or non-glowing igniter is the most common cause of these no-heat calls.\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\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\u003eCompatible Gas Valve\u003c\/td\u003e\n\u003ctd\u003e1172821 (VR8205S)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003eBurner Ignition\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eOEM\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 for the Tempstar T8MPN150J20B1 gas furnace. Also used across ICP-family furnaces (Tempstar, Heil, Comfortmaker, Arcoaire) sharing the same HSI ignition system. Handle the igniter only by its ceramic base — skin oils on the element can cause premature failure.\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 at the furnace switch and breaker, verify zero voltage with a multimeter, and shut off the gas supply.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the furnace burner compartment access panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph the igniter position 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 without touching nearby surfaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new igniter handling it only by the ceramic base, then reconnect the wiring per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore gas and power, then observe a full ignition cycle to confirm the igniter glows and the burners light.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInducer and blower run but burners never ignite (no heat)\u003c\/li\u003e\n\u003cli\u003eVisible cracks or breaks in the igniter element\u003c\/li\u003e\n\u003cli\u003eIgniter no longer glows during the ignition sequence\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. Backed by the National HVAC Parts fitment guarantee.\u003c\/p\u003e","brand":"Tempstar","offers":[{"title":"Direct Replacement","offer_id":63021733151091,"sku":"1172533-GEN","price":39.95,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048453914995,"sku":"1172533","price":51.94,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-igniter-silicon-carbide-1172533_49825eb0-8c99-4f18-bb2b-3b9a5bc79d43.jpg?v=1782960199","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-hot-surface-igniter-for-t8mpn150j20b1-hsi-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}