OEM Lennox Draft Inducer Blower Motor — Y4642
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The genuine OEM Lennox Y4642 is a draft inducer blower motor designed to power the inducer assembly on compatible Lennox furnaces. It generates the induced draft that moves combustion gases through the heat exchanger and out the vent, producing the pressure the safety switch must sense before the furnace will light and fire safely.
Common failure symptoms include a furnace that energizes the inducer but never ignites, rattling, grinding, or high-pitched squealing from the inducer housing, sluggish or seized motor operation, and repeated lockouts from an open pressure switch. These issues usually trace back to worn bearings, a burned winding, or general age-related wear, often starting as occasional no-heat calls.
Why OEM matters: The Y4642 is matched to the exact RPM, torque, and airflow your Lennox control board and pressure switch expect. A generic motor can vent too weakly to prove draft or run out of spec, leading to nuisance lockouts, inconsistent heat, and added strain on the heat exchanger. Installing the factory-correct Y4642 restores reliable venting and rated performance while protecting your warranty. In stock and shipping same day before 3PM CST.
Shipping Information
- Orders placed before 3PM CST ship same business day
- Standard delivery: 2-5 business days
- Express shipping available at checkout
- Free shipping on orders over $75
- Tracking number emailed upon shipment
Return Policy
- 30-day returns on unused parts in original packaging
- Electrical parts (capacitors, contactors, control boards) are final sale once installed
- Email info@nationalhvacparts.com to initiate a return
- Refunds processed within 5-7 business days