OEM Lennox ECM X-13 Blower Motor Assembly — 81W42
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The genuine OEM Lennox 81W42 ECM X-13 blower motor assembly drives the indoor blower that circulates conditioned air through your Lennox furnace or air handler. The constant-torque X-13 ECM design holds steady airflow against changing static pressure while drawing far less power than a traditional PSC motor, delivering quieter, more efficient, and more consistent comfort across every stage of operation.
Common failure symptoms include weak or no airflow from the registers, the blower failing to start or humming without spinning, intermittent shut-offs on overheating, unusual noise or vibration, or the motor cutting out under load. Overheating supply air and repeated limit trips are also telltale signs of a worn blower motor.
Why OEM matters: the Lennox 81W42 is matched to your system's blower housing, wheel, and control module for the exact torque profile and airflow programming Lennox specifies. Aftermarket ECM substitutes often miscommunicate with the control board or move the wrong CFM, hurting efficiency and comfort. The correct OEM assembly guarantees proper fit, quiet operation, and full Lennox compatibility.
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