Factory Authorized Parts™ LA22ZA120 HVAC Blower Wheel 11.93" x 11.93" 1/2" Bore

The High-Volume Airflow Engine

The LA22ZA120 is a precision-balanced centrifugal blower wheel acting as the primary aerodynamic "engine" for Carrier, Bryant, and Payne furnaces and air handlers. As a genuine Factory Authorized Part, this wheel serves as the mechanical heart of your indoor air distribution system, rotating within the blower housing to pull air through the return ducts and push it across the heat exchanger or cooling coil. It is specifically designed to support large-tonnage residential systems, ensuring the system's "brain" (the control board and motor) can maintain the exact Static Pressure requirements needed for efficient heating and cooling. By utilizing a symmetric 11.93-inch diameter and width, this wheel maximizes CFM (Cubic Feet per Minute) output while maintaining the whisper-quiet operation these premium HVAC series are known for.

Key Features:

• Genuine OEM Balancing: Engineered under part number LA22ZA120 to be factory-balanced, eliminating the "wobble" and vibration that leads to premature blower motor bearing failure.
• High-Capacity Airflow: Features a deep-curved blade geometry designed to move massive volumes of air through dense high-MERV filtration systems and multi-stage coils.
• Precision 1/2" Bore Hub: Equipped with a reinforced center hub specifically sized for a 1/2-inch motor shaft, providing a slip-free mechanical connection for high-torque PSC and ECM motors.
• Corrosion-Resistant Construction: Fabricated from high-grade galvanized steel to withstand the high-humidity environments found in air handler cabinets during the cooling season.
• Whisper-Quiet Dynamics: The specific blade count and curvature are acoustically tuned to reduce air turbulence and "thumping" noises often associated with generic aftermarket wheels.

Product Details:

• Brand: Factory Authorized Parts™ (Carrier/Bryant/Payne)
• Manufacturer: Carrier Corporation / Lau Industries
• Part Number: LA22ZA120
• Weight: 6.8 lbs
• Diameter: 11.93 Inches
• Width: 11.93 Inches
• Bore Size: 1/2 Inch
• Material: Galvanized Steel
• Rotation: CCW (Counter-Clockwise) Facing Hub

🛠️ HVAC Depot Pro Tip: Practical Installation Advice

"Sand the Shaft First!" Before attempting to slide the new LA22ZA120 onto the motor, use a piece of emery cloth to sand any rust or burs off the blower motor shaft. A smooth surface ensures the hub slides on without force, preventing damage to the motor’s internal bearings. Take a Picture of the wheel's original position inside the blower housing before removal; the wheel must be perfectly centered within the housing "cutoff" to prevent air bypass and ensure peak efficiency. Always tighten the set screw onto the "flat" side of the shaft to prevent the wheel from spinning loose.

Cross-Reference:

• Superseded Numbers: LA22ZA117, LA22ZA115, LA22ZA109
• Legacy Numbers: 310574-754, P251-1111, 303732-401
• Drawing Numbers: 1011833, 1NT01L-4375
• Equivalent Brands: Lau Industries (Carrier Certified Series)

Model Compatibility:

58STA/58STX Series (Suffixes: 110, 135, 155)

310A/310J Series (Suffixes: 066110, 066135, 066155)

59SC2/59SC5 Series (Suffixes: 100S21, 120S24, 140S24)

912S/915S Series (Suffixes: 60100S, 60120S)

PG9M Series (Suffixes: 080, 100, 115)

FA4B/FB4B Series (Suffixes: 048000, 060000)