{"product_id":"tempstar-run-capacitor-for-t8mpt050b12b1-5-mfd-440v-oval-ships-today","title":"Tempstar Run Capacitor for T8MPT050B12B1 — 5 MFD 440V Oval | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM oval run capacitor (part number 1170643) provides the starting and running torque for the motor in your Tempstar T8MPT050B12B1 gas furnace. Rated at 5 MFD and 440 volts, it stores and delivers the electrical charge that keeps the motor spinning efficiently. When a run capacitor weakens or fails, the motor draws excess current, overheats, and eventually stops — leading to no airflow, a humming motor that won't start, or a unit that trips its breaker. This capacitor ships with the original oval form factor and mounting strap (\"STRAP CAPACITOR OVAL S\") for a direct OEM fit.\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\u003e1170643\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eSingle Run Capacitor, Oval\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\u003eCapacitance\u003c\/td\u003e\n\u003ctd\u003e5 MFD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage\u003c\/td\u003e\n\u003ctd\u003e440V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTolerance\u003c\/td\u003e\n\u003ctd\u003e±6%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFit\u003c\/td\u003e\n\u003ctd\u003eOEM 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 T8MPT050B12B1 furnace and other ICP-family equipment (Tempstar, Heil, Comfortmaker) using OEM part 1170643. Always confirm your existing capacitor's MFD and voltage rating 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, then verify zero voltage with a multimeter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the furnace service\/blower panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph all capacitor wiring before disconnecting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Discharge the old capacitor across its terminals with an insulated resistor, loosen the mounting strap, and pull the leads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Secure the new capacitor in the strap and reconnect each lead per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and confirm the blower starts and runs smoothly.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBlower motor hums but won't start\u003c\/li\u003e\n\u003cli\u003eBulging, leaking, or burst capacitor top\u003c\/li\u003e\n\u003cli\u003eIntermittent airflow or motor cutting out under load\u003c\/li\u003e\n\u003cli\u003eMeasured capacitance falls outside the 5 MFD ±6% rating\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":63021729087859,"sku":"1170643-GEN","price":16.95,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048487240051,"sku":"1170643","price":22.04,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-capacitor-oval-single-1170643_1d5be2f1-58b9-4cc8-9086-ed303aaa4bf4.jpg?v=1782961304","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-run-capacitor-for-t8mpt050b12b1-5-mfd-440v-oval-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}