Reznor 163894 Capacitor

The Reznor 163894 Capacitor is a high-performance 4mfd 370v Oval Capacitor engineered primarily for use in venter motor and blower assemblies within Reznor gas-fired unit heaters and duct furnaces. As a genuine HVAC motor run capacitor, it provides the precise electrical phase shift required to optimize motor torque and operational efficiency. This OEM Reznor replacement part features a single-phase design suitable for 50/60 Hz systems, ensuring the necessary capacitance 4uF rating for stable motor starting and continuous run performance in demanding commercial and industrial environments.

This Reznor 163894 assembly includes an integrated mounting bracket for a secure, vibration-resistant installation directly to the equipment chassis. Built to withstand the high-temperature conditions of a gas-fired heater cabinet, the durable oval casing meets rigorous 10,000 AFC safety standards. When troubleshooting a non-starting venter motor or a weak blower, replacing an out-of-spec capacitor with this 4mfd 370v Oval Cap/W Bracket is critical for restoring system air flow and preventing premature motor failure in units like the Reznor UDAP or UDX series.

• Precise 4 MFD Rating: Delivers accurate capacitance to ensure proper motor torque and lower operating temperatures.
• Integrated Mounting Bracket: Simplifies field replacement with a pre-configured capacitor with mounting bracket for secure attachment.
• Industrial Durability: Rated for 370V applications, providing significant overhead for standard 115V and 230V venter motor circuits.
• Direct OEM Compatibility: Specifically designed for Reznor HVAC systems, eliminating the guesswork of universal fitment issues.

What happens if I use a 5 MFD capacitor instead of this 4 MFD 163894?
Using a higher capacitance than the motor's nameplate requirement can lead to over-amping the windings, which increases heat and significantly shortens the motor’s service life. Always match the 4uF rating specified by Reznor.

Can this 370V capacitor replace a 440V version?
No. While a 440V capacitor can replace a 370V capacitor (as voltage is a "not-to-exceed" rating), a 370V capacitor cannot safely replace a 440V rated part. Research your motor's requirements before installation.

Why does my 163894 capacitor have an oval shape?
The oval footprint is often used in tight spaces within furnace cabinets or venter motor housings to provide the necessary capacitance while maintaining a low profile for clearance near other components.

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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.