Lennox Y4604 Run Capacitor

When you're servicing a condenser or blower motor, pulling the Lennox Y4604 Run Capacitor ensures the system maintains its peak power factor and torque efficiency. This 40 Microfarad 440Vac Round Run Capacitor is a high-performance electrical component designed for continuous operation in demanding HVACR environments. It serves as the direct OEM-specified replacement for legacy Lennox part numbers 53H17 and 53H1701, and can also be substituted with catalog number 19J01. Built with a robust round metal casing, this 40 MFD capacitor stays stable under high thermal loads, providing the necessary phase-shift for induction motors in various residential and commercial units. Field techs value the 440V rating because it offers superior dielectric strength over 370V alternatives, preventing premature breakdown during voltage spikes. This HVAC replacement capacitor is essential for restoring compressor start-up cycles and ensuring smooth motor RPMs across Armstrong, Ducane, and Lennox platforms.

• Direct Replacement: Engineered to swap out outdated 53H17 and 53H1701 series without bracket modifications.
• Industrial Versatility: The 440Vac rating makes it backward compatible with 370V systems while offering increased surge protection.
• Stable Output: Maintains a tight 40 uF capacitance tolerance to ensure consistent motor winding protection.
• Built for Longevity: Designed for 50/60Hz applications with a temperature-resistant fluid-filled housing.

Common Questions

Can I use this if my old capacitor is only 370V?
Yes, as long as the microfarad (MFD) rating matches. A 440Vac capacitor is a standard upgrade for 370V systems, providing a higher safety margin for the dielectric material.

How do I know if the Lennox Y4604 is failing?
Technicians should look for physical bulging at the top terminal plate or use a multimeter to check if the reading has drifted more than 5-10% from its 40 MFD rating.

Does this fit my specific Lennox condenser?
This part is widely used across Lennox, Armstrong, and Ducane equipment. Always verify the part number in the service manual or check the legacy 53H17 stamps on the existing unit before installation.

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.