{"product_id":"icp-hot-surface-igniter-for-wfmr090b042b2-silicon-nitride-hsi-kit-ships-today-1","title":"ICP Hot Surface Igniter for WFMR090B042B2 — Silicon Nitride HSI Kit | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM hot surface igniter (HSI) is the ignition source for the ICP\/Tempstar\/Heil WFMR090B042B2 gas furnace. When the thermostat calls for heat, the control board sends voltage to the igniter, which glows to roughly 2,000°F and lights the burners. This kit includes the silicon-nitride igniter element (OEM 1176919) and its mounting bracket (OEM 1183455). A cracked, eroded, or open igniter is one of the most common no-heat failures: the furnace runs its pre-purge, fails to light, and locks out — often after several retry cycles. Replacing a worn igniter restores reliable single-attempt ignition and prevents repeated lockouts.\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\u003eOEM Part Number\u003c\/td\u003e\n\u003ctd\u003e1176919 (Igniter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded Bracket\u003c\/td\u003e\n\u003ctd\u003e1183455 (Igniter Bracket)\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\u003eICP \/ Tempstar \/ Heil\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFits Model\u003c\/td\u003e\n\u003ctd\u003eWFMR090B042B2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eGas Furnace Ignition\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cp\u003eDesigned for the ICP-family WFMR090B042B2 gas furnace and is interchangeable across the ICP, Tempstar, Heil, and Comfortmaker brands that share this platform. Always confirm your part number against the unit's rating plate before installing.\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 and disconnect electrical power at the furnace switch and breaker; 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 wiring and bracket position before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Unplug the igniter connector, remove the bracket screw(s), and withdraw the old igniter without touching the element.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Mount the new igniter and bracket, handling the element by the ceramic base only, and reconnect the plug per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore gas and power, then run a heat cycle and confirm the igniter glows and lights the burners on the first attempt.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFurnace fails to light and locks out after several tries\u003c\/li\u003e\n\u003cli\u003eIgniter is visibly cracked, blistered, or no longer glows\u003c\/li\u003e\n\u003cli\u003eIntermittent no-heat calls, especially in cold weather\u003c\/li\u003e\n\u003cli\u003eResistance reads open or out of spec on a multimeter\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":"ICP","offers":[{"title":"OEM","offer_id":63027238437235,"sku":"1183455","price":44.2,"currency_code":"USD","in_stock":true},{"title":"Generic","offer_id":63047659585907,"sku":"1183455-GEN","price":34.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-igniter-silicon-nitride-1183455_759b548b-1ba8-42cf-ac7f-8127758d8005.jpg?v=1782892832","url":"https:\/\/nationalhvacparts.com\/products\/icp-hot-surface-igniter-for-wfmr090b042b2-silicon-nitride-hsi-kit-ships-today-1","provider":"National HVAC Parts","version":"1.0","type":"link"}