{"product_id":"tempstar-hot-surface-igniter-for-t8mpn050b12b1-hsi-with-vr8205s-gas-valve-ships-today","title":"Tempstar Hot Surface Igniter for T8MPN050B12B1 — HSI with VR8205S Gas Valve | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis genuine Tempstar OEM hot surface igniter (part 1172533, \"IGNITOR HSI\") ignites the burners on the T8MPN050B12B1 gas furnace and is paired here with the Honeywell snap-mount gas valve (part 1172821, \"VALVE N HSI SNAP HW VR8205S\"). The hot surface igniter glows orange-white on a thermostat call and lights the gas as the valve opens. HSI elements are brittle silicon-carbide or silicon-nitride and are the most common no-heat failure point — they crack, develop hairline fractures, or burn out, so the burners never light and the furnace locks out. The VR8205S gas valve meters and shuts off gas to the burner manifold under control of the ignition board.\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\u003eIgniter Part Number\u003c\/td\u003e\n\u003ctd\u003e1172533 (Hot Surface Igniter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGas Valve Part Number\u003c\/td\u003e\n\u003ctd\u003e1172821 (Honeywell VR8205S, snap-mount)\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\u003eValve Voltage\u003c\/td\u003e\n\u003ctd\u003e24V control\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eOEM exact-fit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eFits the Tempstar T8MPN050B12B1 gas furnace and related ICP\/Heil\/Tempstar\/Comfortmaker furnaces using a hot surface igniter and the Honeywell VR8205S snap-mount gas valve. Verify igniter mounting bracket and valve gas-line\/connector orientation against your original parts.\u003c\/p\u003e\n\n\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety First\u003c\/strong\u003e — Shut off the gas supply, disconnect power at the switch and breaker, and verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the furnace burner-compartment service panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph the igniter bracket position and all gas valve wiring and gas connections before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug the igniter and unscrew its bracket (handle by the ceramic base only — never touch the element). For the valve, disconnect wiring and gas unions and remove the old valve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new igniter at the factory gap to the burner, then install the valve, reconnect gas and wiring per your photo, and leak-check all gas joints with soap solution.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore gas and power, run a heat call, and confirm the igniter glows, the valve opens, and burners light cleanly.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eIgniter never glows on a heat call (no ignition, furnace lockout)\u003c\/li\u003e\n\u003cli\u003eVisible crack or fracture in the igniter element\u003c\/li\u003e\n\u003cli\u003eFurnace ignites then short-cycles or fails on flame proving\u003c\/li\u003e\n\u003cli\u003eGas valve fails to open\/close or chatters during ignition\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":63021776175475,"sku":"1172533-GEN","price":34.95,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048452964723,"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_dafd6896-c1cf-44fe-81b6-9e4b9fa04a90.jpg?v=1782960159","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-hot-surface-igniter-for-t8mpn050b12b1-hsi-with-vr8205s-gas-valve-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}