{"product_id":"tempstar-hot-surface-igniter-hsi-for-t9mpv075f12d1-furnace-ignition-ships-today","title":"Tempstar Hot Surface Igniter (HSI) for T9MPV075F12D1 — Furnace Ignition | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM hot surface igniter (HSI, part 1172533) is the ignition component for the Tempstar T9MPV075F12D1 two-stage gas furnace. On a call for heat the control board energizes the igniter, which heats past 2,000°F to light the burners; the system then proves flame before the Honeywell VR8205Q 2-stage gas valve (related part 1172822) stays open. A cracked or worn igniter is one of the most common no-heat failures — look for a furnace that cycles but never lights, a glowing igniter with no flame, or repeated ignition lockouts. This direct-fit HSI restores reliable startup on the T9MPV075 platform.\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\u003eVoltage\u003c\/td\u003e\n\u003ctd\u003e120V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelated Component\u003c\/td\u003e\n\u003ctd\u003e1172822 — VR8205Q 2-stage gas valve (N\u0026amp;L HSI HW)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eOEM direct 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\u003eEngineered for the Tempstar T9MPV075F12D1 two-stage gas furnace and compatible ICP \/ Heil \/ Comfortmaker units using HSI part 1172533. This furnace pairs the igniter with the Honeywell VR8205Q 2-stage gas valve. Verify your model and part number 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 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 mounting and wire routing before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug the igniter connector and remove the mounting screw(s), handling the old igniter by its ceramic base only.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new igniter without touching the element, and reconnect per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore gas and power, then run a heat cycle to confirm glow, ignition, and flame proof on both stages.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIgniter glows but burners never light\u003c\/li\u003e\n\u003cli\u003eFurnace locks out after 3+ ignition attempts\u003c\/li\u003e\n\u003cli\u003eVisible cracks or hot spots on the element\u003c\/li\u003e\n\u003cli\u003eNo glow at all during a call for heat\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eShipping \u0026amp; Returns\u003c\/h3\u003e\n\u003cp\u003eShips same day on orders placed 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":63021679182195,"sku":"1172533-GEN","price":30.0,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048451326323,"sku":"1172533","price":39.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-igniter-silicon-carbide-1172533_87882669-3134-4641-9247-71d5f3a9761a.jpg?v=1782960094","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-hot-surface-igniter-hsi-for-t9mpv075f12d1-furnace-ignition-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}