{"product_id":"tempstar-hot-surface-igniter-for-t8mpl125j20b2-hsi-with-vr8205s-gas-valve-option-ships-today","title":"Tempstar Hot Surface Igniter for T8MPL125J20B2 — HSI with VR8205S Gas Valve Option | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis genuine OEM hot surface igniter (part number 1172533, IGNITOR HSI) is the ignition element for the Tempstar T8MPL125J20B2 gas furnace. When the thermostat calls for heat, the control board energizes the igniter, which glows red-hot to light the burners. This furnace platform also pairs with the Honeywell VR8205S snap-mount gas valve (OEM part 1175705) — listed here as the companion control component for techs servicing the complete ignition assembly. A worn or cracked igniter is the leading cause of no-heat failures: the furnace draft inducer runs and you hear ignition attempts, but the burners never light, often ending in a hard lockout. Replacing the igniter with the correct OEM silicon nitride element restores dependable lighting.\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)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompanion Part\u003c\/td\u003e\n\u003ctd\u003e1175705 — VR8205S snap gas valve\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\u003eElement\u003c\/td\u003e\n\u003ctd\u003eSilicon Nitride\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\u003eVoltage\u003c\/td\u003e\n\u003ctd\u003e120V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFits Model\u003c\/td\u003e\n\u003ctd\u003eT8MPL125J20B2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eGenuine OEM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eFactory ignition component for the Tempstar T8MPL125J20B2 gas furnace. The matching Honeywell VR8205S snap-mount gas valve (1175705) is used on the same platform. Because ICP builds Tempstar, Heil, and Comfortmaker furnaces on shared designs, igniter 1172533 also services many comparable ICP-built models. Verify your unit's part number on the rating plate 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 furnace burner\/service panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph the igniter wiring, bracket, and (if servicing the valve) the gas valve connections before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug the igniter harness and remove the mounting screw. Lift the old igniter out by its ceramic base — never touch the element with bare fingers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Position the new igniter in the burner flame path, secure the screw, and reconnect the harness per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore gas and power, run a heat cycle, and confirm the igniter glows and the burners light within the normal trial-for-ignition window.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIgniter fails to glow on a call for heat\u003c\/li\u003e\n\u003cli\u003eCracked, chipped, or white-blistered element\u003c\/li\u003e\n\u003cli\u003eFurnace locks out after multiple failed ignition attempts\u003c\/li\u003e\n\u003cli\u003eInducer and gas valve cycle but burners never ignite\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":63021776306547,"sku":"1172533-GEN","price":34.95,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048452800883,"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_6e9f2530-2fcd-4a79-b30d-e70bfa49dffe.jpg?v=1782960155","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-hot-surface-igniter-for-t8mpl125j20b2-hsi-with-vr8205s-gas-valve-option-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}