Lennox 21706 Blower Wheel

The Lennox 21706 Blower Wheel is a direct-drive, double-inlet centrifugal component engineered for high-static pressure applications in residential and light commercial air handlers and furnaces. Featuring a 10 3/4 inch diameter x 9 1/2 inch width, this clockwise (CW) rotation wheel is designed for optimal CFM output and quiet operation. The 1/2-inch bore hub is precision-machined to ensure a secure fit on the motor shaft, reducing vibration and premature bearing wear. Constructed from heavy-duty galvanized steel, the 21706 resists corrosion while maintaining structural integrity during high-velocity airflow. When troubleshooting noisy blowers or reduced airflow, verifying the concave/convex blade orientation and hub placement is critical for compatibility. This OEM Lennox replacement part ensures the system meets the original manufacturer's static pressure specifications, maintaining the integrity of the heat exchanger and evaporator coil performance throughout the heating and cooling cycles.

• Precise Static Pressure Calibration: Engineered to match Lennox furnace blower wheel specifications for consistent airflow across the DX coil.
• Durable Galvanized Construction: Resists moisture and environmental corrosion, extending the service life of the HVAC blower assembly.
• Reduced Mechanical Stress: Dynamically balanced blades minimize shaft oscillation, protecting the furnace blower motor bearings.
• Direct OEM Fitment: Eliminates the need for shaft modifications or housing adjustments common with generic aftermarket "will-fit" components.

What is the rotation direction for the Lennox 21706?
This wheel is Clockwise (CW) rotation, determined by viewing the wheel from the hub side. Installing an incorrect rotation wheel will result in significantly reduced airflow and potential motor overheating.

Will this wheel fit non-Lennox units?
While sized at 10.75" x 9.5", it is specifically designed for Lennox replacement parts catalogs. Always verify the hub offset and bore size before attempting to use this in cross-brand applications.

How do I confirm if my current wheel is failing?
Inspect for "oil canning" of the blades, heavy dust accumulation that affects balance, or any separation between the center disc and the blades which causes clicking or whistling during the ramp-up phase.

This item is not eligible for free shipping.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.