Description
The Mars 12909 is a 12.5 microfarad, 370VAC oval run capacitor engineered to deliver consistent, dependable performance in a wide range of HVAC applications. Run capacitors are essential components in single-phase motors, maintaining a continuous phase shift that keeps motors running smoothly and efficiently throughout their operating cycle.
Key Features
- Capacitance: 12.5 microfarad (MFD/µF)
- Voltage rating: 370VAC
- Oval form factor for easy installation in tight equipment cabinets
- Designed for continuous-duty motor run applications
- Compatible with condenser fan motors, compressors, and blower motors
- Mars quality construction for long service life and reliable operation
Common Applications
- Air conditioning condenser fan motors
- Residential and light commercial HVAC compressors
- Blower and air handler motors
- Heat pump systems
Why Choose a Mars Run Capacitor?
Mars (Motors & Armatures) is a trusted name in HVAC electrical components, known for producing capacitors that meet or exceed OEM specifications. The oval design of the 12909 allows for versatile mounting options and fits easily into standard capacitor brackets, making it a go-to replacement part for HVAC technicians in the field.
Keep your motors running at peak efficiency — order the Mars 12909 run capacitor from Jackson today.







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