Description
The Mars 12945 is a 40 Microfarad (MFD/µF), 440VAC oval run capacitor engineered to provide consistent, long-lasting performance in residential and commercial HVAC applications. Run capacitors are essential components that keep single-phase motors operating at peak efficiency by maintaining the phase shift needed for continuous motor rotation in compressors, condenser fan motors, and blower motors.
Key Features
- Capacitance: 40 Microfarad (MFD/µF)
- Voltage Rating: 440VAC
- Oval case design for easy installation in tight spaces
- Designed for continuous-duty run capacitor applications
- Compatible with single-phase compressors, condenser fan motors, and air handler blower motors
- Manufactured by Mars (Motor & Armature, Inc.), a trusted name in HVAC electrical components
Common Applications
- Air conditioning compressors
- Condenser fan motors
- Evaporator and air handler blower motors
- Heat pump systems
- Residential and light commercial HVAC equipment
Why Choose a Mars Run Capacitor?
Mars capacitors are a go-to choice for HVAC technicians and contractors due to their consistent quality, wide voltage ratings, and reliable performance in demanding operating environments. The oval form factor makes replacement straightforward, fitting most standard capacitor brackets and mounting hardware found in the field.
Keep your motors running efficiently and avoid costly equipment downtime by replacing worn or failed run capacitors with the Mars 12945.







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