Carrier 320788-704 Blower Housing

The Carrier 320788-704 Blower Housing is a critical OEM replacement component designed for precision airflow management in Carrier, Bryant, and Payne residential furnaces. Featuring a robust 10.5-inch inlet diameter, this factory-authorized housing ensures the blower wheel operates within exact clearances to maintain static pressure and system efficiency. As a direct replacement for legacy part numbers 319818-727 and 324901-702, it utilizes a four-point mounting configuration to minimize vibration and structural noise during high-velocity heating and cooling cycles. For technicians performing a furnace blower motor housing replacement, this heavy-gauge steel assembly restores the integrity of the air handler's drive system, preventing air bypass and ensuring consistent CFM delivery across the heat exchanger. This HVAC blower assembly is engineered to meet specific manufacturer tolerances, making it the reliable choice for maintaining factory-spec performance in forced air heating systems.

Key Benefits

• OEM Compatibility: Exact fit for specific Carrier blower housing applications, eliminating the need for field modifications.
• Optimized Airflow: Precision-curved scroll design maximizes kinetic energy transfer from the blower wheel to the ductwork.
• Direct Cross-Reference: Validated replacement for obsolete numbers 319818-727 and 324901-702.
• Durable Construction: Heavy-duty galvanized steel prevents corrosion and maintains shell rigidity under high static pressure.
• Reduced Vibration: Reinforced mounting points ensure stable motor alignment and quieter operation.

Common Questions

Is the Carrier 320788-704 compatible with my furnace?
This housing is designed for specific 80% and 90%+ AFUE furnaces. You should verify your model number against the HVAC replacement parts catalog, though it typically covers several Bryant, Payne, and Carrier mid-to-high efficiency units.

Does this housing include the blower wheel or motor?
No, this is the furnace blower scroll (housing) only. The motor, wheel, and capacitor must be swapped from the existing assembly or purchased separately.

What are the dimensions for the inlet and mounting?
The unit features an approximate 10.5-inch inlet and a standard four-point mounting pattern used across most Carrier forced air parts in this series.

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.