Daikin-McQuay 037516403 Run Capacitor

The Daikin-McQuay 037516403 Run Capacitor is a high-duty 5 MFD 440V oval capacitor engineered for continuous motor run applications in commercial HVAC units. Designed to handle the rigorous demands of Daikin and McQuay equipment, this 440 volt motor run capacitor provides the necessary phase shift for efficient motor operation and heat dissipation. A failing capacitor is a common point of failure for blower motors and small compressors; replacing a weak unit with this HVAC motor run capacitor ensures proper microfarad rating consistency, which prevents winding overheating and extends the service life of the motor. The oval aluminum casing provides a robust footprint for standard mounting brackets, making it a direct OEM replacement capacitor for maintenance contractors looking to restore system power factor and operational efficiency without cabinet modifications.

• High Voltage Tolerance: Rated for 440Vac, providing a safer buffer for 370V applications to prevent dielectric breakdown.
• Precise Capacitance: Maintains a steady 5 microfarad output to ensure optimal motor torque and RPM stability.
• Durable Construction: Built with high-grade metallized polypropylene film to withstand the high ambient temperatures found in rooftop units.
• Standardized Fit: The oval run capacitor geometry ensures compatibility with existing Daikin-McQuay motor mounting hardware.

Can this 440V capacitor replace a 370V capacitor?
Yes, you can always go up in voltage rating. Using a 440V capacitor in place of a 370V unit is a standard practice that offers better resistance to voltage spikes, provided the 5 MFD rating and physical dimensions match.

What are the symptoms of a failing 037516403 capacitor?
Technicians should look for motor humming, failure to start, or the motor cutting out on internal thermal overload. Always test the microfarad levels with a multimeter; if the reading is +/- 5% outside the 5 MFD specification, the unit requires replacement.

Is this a start capacitor or a run capacitor?
This is an HVAC run capacitor designed for continuous duty. Unlike start capacitors, it remains in the circuit while the motor is energized to maintain efficiency and torque.

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.