{"product_id":"oem-lennox-dual-run-capacitor-89m77","title":"OEM Lennox Dual Run Capacitor — 89M77","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e89M77\u003c\/strong\u003e dual run capacitor powers both the compressor and the condenser fan motor from a single component, supplying the steady electrical charge these motors need to start and run efficiently. Used across many Lennox condensing units, this dual-rated capacitor is a critical link between the electrical supply and reliable cooling performance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e A failing \u003cstrong\u003e89M77\u003c\/strong\u003e capacitor commonly causes a humming outdoor unit that won't start, a fan that won't spin, warm air from the registers, tripped breakers, or short-cycling. A bulged, swollen, or leaking capacitor top is a clear visual sign of failure, and problems often surface during the hottest days when motor loads peak.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e The \u003cstrong\u003e89M77\u003c\/strong\u003e is manufactured to Lennox's exact dual microfarad (µF) and voltage ratings for both the compressor and fan circuits. Mismatched aftermarket capacitors can under- or over-supply the motors, leading to overheating, hard starts, and repeat failures that risk the compressor. The factory OEM part ensures precise capacitance, correct fit, and dependable long-term operation.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081089106291,"sku":"LNX-89M77","price":18.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-capacitor-round-dual-LNX-89M77.jpg?v=1783760488","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-dual-run-capacitor-89m77","provider":"National HVAC Parts","version":"1.0","type":"link"}