{"product_id":"icp-blower-motor-run-capacitor-for-rgs121hrca0aaa-7-5-mfd-370v-ships-today","title":"ICP Blower Motor Run Capacitor for RGS121HRCA0AAA — 7.5 MFD 370V | Ships Today","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eThis OEM run capacitor keeps the blower motor in your ICP Tempstar Heil RGS121HRCA0AAA gas furnace spinning at the correct speed and torque. Rated at 7.5 MFD and 370 volts, it provides the steady phase shift the PSC blower motor needs to start and run efficiently. Kit includes the capacitor boot (OEM 1171842) and oval mounting clamp (OEM 1171552) for a complete, code-correct installation. When a run capacitor weakens or fails, the blower may hum without starting, run hot, cycle on thermal overload, or stop moving air entirely — leaving you with no heat delivery even though the burners fire.\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 Numbers\u003c\/td\u003e\n\u003ctd\u003e1171842 (Boot), 1171552 (Oval Clamp)\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\u003eICP \/ Tempstar \/ Heil\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\u003e370 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eFurnace Blower Motor\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 ICP \/ Tempstar \/ Heil \/ Comfortmaker RGS121HRCA0AAA gas furnace and other units in the same blower-motor family. Always confirm the MFD and voltage rating stamped on your existing capacitor 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 — Disconnect power at the furnace switch and breaker; verify zero voltage with a multimeter and discharge the capacitor across its terminals before touching.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccess\u003c\/strong\u003e — Remove the furnace blower-compartment service panel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDocument\u003c\/strong\u003e — Photograph all wire connections before disconnecting anything.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemove\u003c\/strong\u003e — Note terminal positions, pull the spade connectors, loosen the oval clamp, and lift out the old capacitor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstall\u003c\/strong\u003e — Seat the new capacitor in the clamp, fit the boot, and reconnect leads exactly per your photo.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest\u003c\/strong\u003e — Restore power and confirm the blower starts cleanly and ramps to full speed.\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 will not start\u003c\/li\u003e\n\u003cli\u003eBulging, leaking, or swollen capacitor top\u003c\/li\u003e\n\u003cli\u003eWeak airflow or motor running hot\u003c\/li\u003e\n\u003cli\u003eFurnace trips on blower thermal overload\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":"Direct Replacement","offer_id":63027517522291,"sku":"1171842-GEN","price":24.95,"currency_code":"USD","in_stock":true},{"title":"OEM","offer_id":63047968555379,"sku":"1171842","price":32.44,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-capacitor-oval-single-1171842.jpg?v=1782883893","url":"https:\/\/nationalhvacparts.com\/products\/icp-blower-motor-run-capacitor-for-rgs121hrca0aaa-7-5-mfd-370v-ships-today","provider":"National HVAC Parts","version":"1.0","type":"link"}