MARS 12915 Run Capacitor

As a service tech, you know that a failing run capacitor is one of the most common reasons for a 2:00 AM no-cool call. The MARS 12915 is a high-performance 25 MFD 370V oval run capacitor designed for the heavy start-up and running demands of HVAC motors. This JARD 12915 unit is a direct OEM replacement capacitor for residential air conditioning, heat pumps, and refrigeration systems. Built to withstand 370 VAC, it features a non-PCB oil-filled design and a physical internal pressure interrupter for safe failure, preventing case rupture. Whether you are replacing a MARS2 run capacitor or a standard CBB65 capacitor, this unit offers the capacitance tolerance and 50/60 Hz compatibility needed for reliable motor efficiency. It is a drop-in replacement for common parts like 97F9804 and CPT00160, ensuring your equipment performs to spec without unwanted downtime.

Key Benefits:

• Reliable Motor Start: Provides the consistent 25 microfarad boost required for compressor and blower motor operation.
• Industrial Grade Protection: Equipped with a physical interrupter and non-PCB construction for enhanced safety.
• Wide Compatibility: Direct replacement for C325, Packard, and Genteq oval run capacitors.
• Rugged Build: Designed to operate in temperatures from -40°C to 70°C, meeting strict HVAC technology standards.
• Universal Fit: Standard oval form factor ensures it fits most existing mounting brackets in condensing units.

Common Questions:

Can I use a 440V capacitor to replace this 370V 12915 model?
Yes, as a technician, you can always up-rate the voltage. While this is a 370V capacitor, a 440V version with the same 25 uF rating is a safe and common substitute in the field.

How do I tell if this run capacitor is failing?
Check for physical signs like "mushrooming" or a bulged top where the terminals are located. Always verify with a multimeter to ensure the capacitance is within the ±6% tolerance rating.

Is this MARS 12915 compatible with my specific AC unit?
This part is a single-value run capacitor. If your old unit lists 25 MFD and is an oval shape, this will function as a direct mechanical and electrical equivalent for your system.

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.