Carrier 342890-75104 Blower Assembly

The Carrier 342890-75104 Blower Assembly is a factory-authorized OEM housing and blower wheel kit designed to restore critical airflow in high-efficiency air handlers and furnaces. As the direct replacement for the obsolete 316803-776, this assembly features a 10-inch diameter metal blower wheel (LA22JA004) with a 9-inch width and a standard 0.5-inch bore, ensuring a precision fit on the motor shaft. Engineered for high-static pressure applications, the kit includes a heavy-duty metal housing measuring approximately 18-7/8" x 16-1/4" x 12.5", designed to minimize vibration and operational noise. This centrifugal blower assembly is compatible with various Carrier, Bryant, and Payne FE4, FV4, and FB4 series fan coils. Replacing a damaged housing is essential for resolving issues such as restricted airflow, excessive system noise, or motor strain caused by unbalanced wheels, ensuring the unit maintains its original SEER and HSPF ratings without compromising ventilation system performance.

• Direct OEM Replacement: Engineered as the specific drop-in successor for part 316803-776 and 331551-755, eliminating field modifications.
• Precision Balanced: The metal blower wheel is factory-balanced to prevent shaft oscillation and extend the life of the blower motor bearings.
• Complete Kit: Includes the replacement housing kit and multiple wiring diagrams to ensure accurate electrical reconnects for various system generations.
• Optimized Air Distribution: Restores factory-spec CFM across the evaporator coil to prevent coil freezing and ensure consistent discharge temperatures.

Is the blower motor included with the 342890-75104 assembly?
No, this part number refers to the blower housing and wheel kit. You must reuse your existing motor or purchase a compatible ECM/PSC motor separately if your current one is failing.

How do I ensure this blower wheel fits my motor shaft?
The integrated wheel features a 0.5-inch bore diameter and includes a single set screw for securing it to the flat of the HVAC motor shaft. Always verify your motor shaft diameter before installation.

What are the signs that my blower housing needs a complete replacement?
If you detect visible cracks in the metal casing, significant rust that compromises structural integrity, or an out-of-round wheel that is vibrating the entire air handler cabinet, a full blower assembly replacement is necessary.

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.