{"product_id":"oem-lennox-draft-inducer-motor-18k77","title":"OEM Lennox Draft Inducer Motor — 18K77","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e18K77\u003c\/strong\u003e draft inducer blower motor pulls combustion gases through the heat exchanger and pushes them out through the flue, establishing the safe venting airflow your furnace needs before ignition. Working alongside the pressure switch, it clears the heat exchanger of residual gases at the start of every cycle and maintains proper draft throughout the burn. As a direct factory replacement, the \u003cstrong\u003e18K77\u003c\/strong\u003e is matched to the exact airflow and mounting specifications of your Lennox furnace.\u003c\/p\u003e\u003ch3\u003eCommon Failure Symptoms\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eNo ignition because the pressure switch never proves airflow\u003c\/li\u003e\n\u003cli\u003eLoud grinding, humming, or rattling from the inducer housing\u003c\/li\u003e\n\u003cli\u003eFurnace locks out or short-cycles on startup\u003c\/li\u003e\n\u003cli\u003eMotor runs slowly, intermittently, or not at all\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eA failing inducer motor is a frequent cause of no-heat calls, since the furnace's safety logic will not allow the burners to fire without confirmed venting.\u003c\/p\u003e\u003ch3\u003eWhy OEM Matters\u003c\/h3\u003e\u003cp\u003eThe inducer must deliver the precise airflow the pressure switch expects and physically fit the burner assembly. Aftermarket motors can produce the wrong draft or mounting alignment, triggering lockouts. The OEM Lennox \u003cstrong\u003e18K77\u003c\/strong\u003e ensures factory-correct performance, proper fit, and safe, reliable venting for your Lennox equipment.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081113911667,"sku":"LNX-18K77","price":159.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-draft-inducer-LNX-18K77.jpg?v=1783760268","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-draft-inducer-motor-18k77","provider":"National HVAC Parts","version":"1.0","type":"link"}