OEM Lennox Draft Inducer Blower Motor — 27W74
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The genuine OEM Lennox 27W74 draft inducer blower motor draws combustion byproducts through the heat exchanger and vents them safely out of your Lennox furnace at the start of each heating cycle. It creates the negative pressure needed to close the pressure switch and permit ignition, and is manufactured to the precise airflow and electrical ratings of compatible Lennox furnaces.
Common failure symptoms: A worn or failing 27W74 inducer motor commonly causes no-heat conditions where the burners never light because draft can't be proven. Look for excessive vibration, squealing or grinding bearings, a motor that hums but won't spin, slow spin-up, or repeated pressure-switch and ignition lockout faults.
Why OEM matters: Because inducer performance governs combustion safety and pressure-switch timing, exact-spec airflow is essential. The factory-matched 27W74 ensures proper draft, dependable ignition sequencing, and safe furnace operation — avoiding the fit and reliability issues of generic replacements in your Lennox system.
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