OEM Lennox Draft Inducer Blower Motor — 36K20
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The genuine OEM Lennox 36K20 draft inducer blower motor drives the venting system on your Lennox furnace. It pulls combustion gases through the heat exchanger and pushes them out the flue, creating the negative pressure the pressure switch must sense before the burners can safely ignite. Reliable inducer operation is essential for both safe combustion and efficient heat transfer.
Common failure symptoms: A failing 36K20 often produces loud humming, grinding, or rattling noises, slow or no startup, or a furnace that stalls on ignition because the pressure switch never proves airflow. You may also notice intermittent operation, a burning smell from worn bearings, or repeated pressure switch fault codes.
Why OEM matters: The 36K20 is engineered to deliver the exact airflow and RPM your Lennox model requires so the pressure switch calibrates correctly and combustion venting stays within spec. Generic inducer motors may move too little or too much air, causing lockouts or unsafe operation. Choosing the OEM part guarantees correct performance, mounting, and electrical fit.
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