{"product_id":"oem-lennox-run-capacitor-10-mfd-440v-round-18f99","title":"OEM Lennox Run Capacitor 10 MFD 440V Round — 18F99","description":"\u003cp\u003eThe Lennox \u003cstrong\u003e18F99\u003c\/strong\u003e is a genuine OEM run capacitor rated at 10 MFD and 440 volts in a round housing, made in the USA. It provides the steady phase-shifted charge that a fan or blower motor relies on to start cleanly and maintain consistent, efficient rotation throughout operation. This part is a direct factory replacement for compatible Lennox condensing units and air-handling equipment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e When the \u003cstrong\u003e18F99\u003c\/strong\u003e degrades, you may hear the motor humming without turning, see the fan start slowly or stall, experience intermittent shutdowns, or notice the unit tripping on overload during peak heat. Visual signs include a bulging top, rust, or oil weeping from the case.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e The genuine Lennox \u003cstrong\u003e18F99\u003c\/strong\u003e matches the exact 10 MFD capacitance and 440V rating your system was designed around, built to USA quality standards. Substituting an off-spec capacitor risks overheating, reduced efficiency, and shortened motor life. Installing the OEM part restores rated performance and protects your Lennox motor investment.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081125020019,"sku":"LNX-18F99","price":18.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-capacitor-round-single-LNX-18F99.jpg?v=1783763410","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-run-capacitor-10-mfd-440v-round-18f99","provider":"National HVAC Parts","version":"1.0","type":"link"}