Carrier LA21RA426 Wheel

For service technicians requiring a direct OEM replacement for residential and light commercial units, the Carrier LA21RA426 Blower Wheel is the professional standard for restoring factory-spec performance. This single-inlet draft inducer wheel is precision-engineered to maintain critical static pressure within the combustion assembly. Constructed from high-grade galvanized steel, it features a 4 1/4" diameter and a 3" width, optimized for efficient air displacement. The clockwise (CW) rotation and 5/16" bore size ensure a seamless fit on the motor shaft, preventing the common vibration issues associated with generic, off-brand alternatives. By installing this genuine Carrier HVAC part, contractors ensure reliable airflow through the heat exchanger, which is vital for safe and continuous furnace operation. The durable hub design is built to withstand the rigorous heat-cycling typical of inducer motor applications.

Key Benefits:

• OEM Precision Fit: Engineered specifically for Carrier, Bryant, and Payne equipment to ensure balanced rotation and quiet operation.
• Corrosion Resistance: Heavy-duty galvanized construction resists flue gas moisture, extending the operational life of the induction system.
• Direct Application: Designed specifically for draft inducer assemblies, providing exact air volume for proper combustion venting.
• Installation Ready: Features a standardized 5/16-inch hub for quick replacement in the field, reducing labor time.

Common Questions:

How do I verify the rotation direction for this wheel?
The LA21RA426 is a clockwise (CW) rotation wheel when viewed from the hub end. Check the original assembly's markings to ensure compatibility with your existing inducer motor.

What are the symptoms of a failing blower wheel?
Technicians often report excessive vibration, loud humming or "thumping" noises, and pressure switch trip errors (such as Code 31) when a wheel becomes imbalanced or the hub loosens.

Is this wheel compatible with 48DJD series units?
Yes, this wheel is a verified fit for several 48DJD packaged units (including the 100, 500, and 600 models) and other Carrier-family draft inducer assemblies requiring these specific dimensions.

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.