{"product_id":"tempstar-oval-run-capacitor-for-t8mpn100f20a1-furnace-blower-7-5-mfd-370v-ships-today","title":"Tempstar Oval Run Capacitor for T8MPN100F20A1 Furnace Blower — 7.5 MFD 370V | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\u003cp\u003eThis is the OEM oval run capacitor (part number 1170643, \"STRAP CAPACITOR OVAL S\") for the Tempstar T8MPN100F20A1 gas furnace. The run capacitor provides the continuous phase shift the blower motor needs to maintain torque and run efficiently after startup. Rated at 7.5 MFD and 370V, this oval-body capacitor mounts with the included retaining strap inside the furnace blower compartment. When a run capacitor weakens or fails, the blower motor may hum without starting, start slowly, overheat and trip on thermal overload, or cycle on and off. A bulged or leaking capacitor top is a clear sign of failure. Replacing a worn capacitor restores full airflow and protects the motor from premature burnout.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\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\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacitance\u003c\/td\u003e\n\u003ctd\u003e7.5 MFD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage\u003c\/td\u003e\n\u003ctd\u003e370V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eStrap\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFits Model\u003c\/td\u003e\n\u003ctd\u003eT8MPN100F20A1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cp\u003eEngineered for the Tempstar T8MPN100F20A1 furnace and shared across many ICP-family (Heil, Comfortmaker, Tempstar, Arcoaire) furnace platforms using the same blower motor and run capacitor. Always confirm the MFD and voltage match the rating printed on your old capacitor before installing.\u003c\/p\u003e\u003ch3\u003eInstallation Guide\u003c\/h3\u003e\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. A capacitor can hold a lethal charge.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the blower compartment service panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph all wire positions 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, label and remove the leads, then loosen the mounting strap and lift out the old capacitor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Secure the new capacitor in the strap and reconnect each lead exactly per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and confirm the blower starts promptly and runs smoothly.\u003c\/li\u003e\n\u003c\/ol\u003e\u003ch3\u003eSigns You Need a Replacement\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBlower motor hums but won't start\u003c\/li\u003e\n\u003cli\u003eBulged, swollen, or leaking capacitor top\u003c\/li\u003e\n\u003cli\u003eMotor overheats or trips on thermal overload\u003c\/li\u003e\n\u003cli\u003eWeak or intermittent airflow from registers\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eShipping \u0026amp; Returns\u003c\/h3\u003e\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":63021766803827,"sku":"1170643-GEN","price":19.95,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63048467317107,"sku":"1170643","price":25.93,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-capacitor-oval-single-1170643_3e8b24ce-7027-4024-8760-e8f958ab810d.jpg?v=1782960619","url":"https:\/\/nationalhvacparts.com\/products\/tempstar-oval-run-capacitor-for-t8mpn100f20a1-furnace-blower-7-5-mfd-370v-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}