Trane CPT1074 Run Capacitor

The Trane CPT1074 Run Capacitor is a high-spec OEM component designed for demanding service in residential and light commercial condensing units and heat pump systems. Rated at 80 MFD (microfarads) with a maximum operational threshold of 440VAC, this round run capacitor is engineered to maintain precise phase-angle displacement for efficient motor operation. Built with high-grade metallized polypropylene film and housed in a robust aluminum canister, the CPT1074 provides the necessary reactive power to sustain the magnetic field in the compressor and fan motor windings, ensuring optimal torque and energy efficiency across the HVAC cooling cycle.

For contractors performing AC capacitor replacement, this 80 microfarad capacitor serves as a direct OEM replacement for various Trane and American Standard models, specifically those utilizing high-amperage 5-ton compressors. It is designed to handle high ambient temperatures and rapid cycling without significant capacitance drift. Its 440-volt rating offers increased headroom over 370V alternatives, making it a reliable choice for areas prone to voltage fluctuations. When diagnosing HVAC motor failure or a non-starting outdoor unit, replacing an out-of-tolerance unit with this genuine Trane part ensures the system operates within manufacturer specifications.

• High Dielectric Strength: The 440Vac rating allows for safe operation in systems where voltage spikes or transients are common.
• OEM Compatibility: Specifically designed to replace Trane CPT1074 and CPT01074 without requiring bracket modifications.
• Reliable Starting Torque: Maintains the exact 80 MFD capacitance required to prevent compressor overheating and premature motor wear.
• Safety Rated: Features internal pressure-sensitive interrupters to safely disconnect the capacitor at the end of its service life.

Can I use this to replace a 370V capacitor?
Yes, a 440V capacitor like the Trane CPT1074 can safely replace a 370V unit, as long as the 80 MFD capacitance rating is an exact match. The higher voltage rating indicates the component’s ability to withstand more electrical stress.

What are the signs of a failing 80 MFD run capacitor?
Common indicators include a bulging top ("mushrooming"), leaking oil, a humming noise from the condenser fan motor, or the compressor failing to start while the unit is under load.

Is this a dual run or a single run capacitor?
The CPT1074 is a single round run capacitor. It is intended for a single motor circuit (either compressor or fan) and does not include a secondary "common" or "fan" terminal found on dual-type units.

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.