{"product_id":"oem-lennox-draft-inducer-blower-motor-78f91","title":"OEM Lennox Draft Inducer Blower Motor — 78F91","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e78F91\u003c\/strong\u003e draft inducer blower motor drives the inducer fan that pulls combustion gases through the heat exchanger and safely vents them out of the flue before and during furnace ignition. This pre-purge airflow is essential for the pressure switch to close and allow the ignition sequence to begin, making the inducer a critical safety component in your Lennox furnace.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCommon failure symptoms:\u003c\/strong\u003e the furnace won't ignite and locks out, a loud humming, grinding, or rattling from the inducer housing at startup, a pressure switch fault code, short cycling, or no heat at all. Worn bearings and seized motors are frequent culprits, and a failing inducer will often prevent the furnace from firing entirely as a built-in safety measure.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy OEM matters:\u003c\/strong\u003e the \u003cstrong\u003e78F91\u003c\/strong\u003e is engineered to deliver the exact RPM, torque, and airflow (CFM) your Lennox heat exchanger and pressure switch are calibrated for. A generic motor can create improper draft, trip the pressure switch, or allow dangerous flue-gas conditions. The factory OEM part ensures safe combustion venting, correct pressure-switch operation, and a reliable bolt-in fit.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081095463283,"sku":"LNX-78F91","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-78F91.jpg?v=1783760186","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-draft-inducer-blower-motor-78f91","provider":"National HVAC Parts","version":"1.0","type":"link"}