Modine 5H0738380004 Fan

Finding a reliable Modine 5H0738380004 replacement fan is critical for maintaining the heat throw and airflow integrity of your unit heaters. This 3-blade aluminum propeller fan is engineered for high-performance air distribution in demanding commercial and industrial environments. With a precise aluminum construction, it offers the necessary rigidity to prevent blade deformation under high static pressure, ensuring consistent CFM output across the heat exchanger. This specific HVAC propeller fan is designed to fit a 1/2 inch motor shaft, common in many Modine PD175 and PDP175 unit heaters. When your unit heater fan blade shows signs of stress, vibration, or physical damage, a direct OEM-spec replacement is the only way to restore the original manufacturer’s performance curve. Utilizing genuine HVAC replacement parts like the 5H0738380004 ensures the hub pitch and blade geometry match your motor's torque profile, preventing premature motor bearing wear and optimizing the efficiency of your Modine heater repair.

• Precision Balanced Aluminum: The 3-blade design reduces vibration and noise, extending the life of your fan motor and mounting brackets.
• Direct Bore Compatibility: Features a standard 1/2" bore size for seamless installation on existing 50-inch diameter shafts used in 175 series units.
• Optimized Air Distribution: Restores factory-spec air velocity, preventing "short cycling" and ensuring heat reaches the floor level in high-ceiling applications.
• Corrosion Resistant Material: The high-grade aluminum construction resists moisture and chemical exposure, common in warehouse and garage settings.

Is this fan blade compatible with other unit heater brands?
While some propeller fans share bore sizes, the Modine 5H0738380004 is specifically pitched and weighted for Modine PDP175 and PD175 models. Mixing blade pitches can overload the motor or reduce airflow, leading to heat exchanger failure.

How do I know if my fan blade needs to be replaced?
If you notice excessive vibration, visible hairline cracks near the hub, or "cupping" of the blades, it is time for a unit heater repair. A damaged blade can become an unbalanced projectile, causing significant cabinet damage.

Can I use this on a larger or smaller motor shaft?
No. This hub is machined for a .50 inch motor shaft only. Attempting to use reducers or boring out the hub will compromise the balance and safety of the assembly.

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.