Lau 00840393 Blower Wheel

The Lau 00840393 Blower Wheel, also identified as Model A12-12A, is a high-performance double inlet centrifugal fan wheel engineered for demanding belt drive blower applications. Featuring a 12 5/8" diameter and 12 5/8" width, this double inlet blower wheel utilizes a 1 3/16" bore with a precision-machined 1/4 x 1/8 keyway and a single set screw for secure shaft mounting. Designed for versatility in the field, this unit supports both CW/CCW rotation, making it a reliable OEM replacement blower wheel for various air handling units. The Lau A12-12A is rated for a 1800 Max RPM, ensuring stable performance during high-static pressure demands. Constructed with galvanized steel for structural integrity, this wheel minimizes vibration and optimizes airflow across heat exchangers. For contractors performing HVAC blower assembly repair, verifying the Lau 00840393 specs against the existing housing is critical to ensure proper clearance and optimal cubic feet per minute (CFM) delivery.

• Universal Compatibility: The reversible rotation design allows for integration into multiple furnace and air handler configurations.
• Industrial Durability: Rated for 1800 Max RPM, providing a robust overhead for commercial belt-driven systems.
• Precision Fit: Standard 1 3/16" bore and 1/4 x 1/8 keyway ensure compatibility with standard motor shafts and pulleys.
• Enhanced Airflow: The double inlet design maximizes air intake volume, improving overall system efficiency.

How do I confirm if this wheel fits my existing blower housing?
Measure the diameter and width of your current wheel; the Lau 00840393 requires a housing that accommodates a 12 5/8" x 12 5/8" wheel with sufficient clearance for the double inlet airflow.

Is this wheel suitable for direct drive motors?
No, this is a belt drive blower wheel specifically designed with a 1 3/16" bore and keyway to handle the torque and side-loading typical of belt-driven applications.

Can this wheel replace brands other than Lau?
Yes, as long as the Lau A12-12A match the physical dimensions, bore size, and maximum RPM requirements of the original HVAC blower part.

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.