25 uF MFD ±5% 370/440 VAC Multi-Purpose Motor Run Round Capacitor - For Air Conditioner, Heat Pump
25 uF 370/440 VAC round motor run capacitor for air conditioners and heat pumps with dual terminal top.
Four-step installation guide for 25 uF motor run capacitor in air conditioner and heat pump units.
Infographic showing two 25 uF 370/440 VAC motor run capacitors and signs indicating when to replace an AC capacitor.
25 uF 370/440 VAC round motor run capacitor for air conditioners and heat pumps with lifestyle background.
25 uF round motor run capacitor with dimensions and safety certification logos displayed.
Infographic showing technical specifications for a 25 uF 370/440 VAC round motor run capacitor.
Top view of 25 uF motor run capacitor showing 2-terminal layout with Common, Fan, and Hermetic compressor labels.
25 uF 370/440 VAC round motor run capacitor with aluminum case and metalized polypropylene film construction.
Educational infographic showing how to choose a 25 uF 370/440 VAC round motor run capacitor for HVAC systems.
Infographic showing 25 uF motor run capacitor applications for AC, refrigerator, heat pump, and compressor units.
Technician installing a 25 uF 370/440 VAC round motor run capacitor in an air conditioner unit.
Technician installing a 25 uF 370/440 VAC round motor run capacitor into an air conditioner condenser unit.
25 uF 370/440 VAC round motor run capacitor for air conditioners and heat pumps with dual terminal top.
Four-step installation guide for 25 uF motor run capacitor in air conditioner and heat pump units.
Infographic showing two 25 uF 370/440 VAC motor run capacitors and signs indicating when to replace an AC capacitor.
25 uF 370/440 VAC round motor run capacitor for air conditioners and heat pumps with lifestyle background.
25 uF round motor run capacitor with dimensions and safety certification logos displayed.
Infographic showing technical specifications for a 25 uF 370/440 VAC round motor run capacitor.
Top view of 25 uF motor run capacitor showing 2-terminal layout with Common, Fan, and Hermetic compressor labels.
25 uF 370/440 VAC round motor run capacitor with aluminum case and metalized polypropylene film construction.
Educational infographic showing how to choose a 25 uF 370/440 VAC round motor run capacitor for HVAC systems.
Infographic showing 25 uF motor run capacitor applications for AC, refrigerator, heat pump, and compressor units.
Technician installing a 25 uF 370/440 VAC round motor run capacitor in an air conditioner unit.
Technician installing a 25 uF 370/440 VAC round motor run capacitor into an air conditioner condenser unit.
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25 uF MFD ±5% 370/440 VAC Multi-Purpose Motor Run Round Capacitor - For Air Conditioner, Heat Pump

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25 MFD uf ± 5% MFD 370 V VAC or 440 Volt Multi-Purpose Motor Run Round Capacitor

Key Features

  • Capacitance: 25 MFD / uF
  • Tolerance: ± 5%
  • Voltage Rating: 370V or 440V AC
  • Frequency: 50/60 Hz
  • Shape: Round
  • Dielectric Fluid: Non-PCB Oil
  • Case Material: Aluminum
  • Terminals: 1/4 inch male spade terminals
  • Safety Standard: UL Recognized

Replaces / Cross-Reference Part Numbers

  • Replaces any single-value, round motor run capacitor with matching 25 MFD and 370V or 440V specifications.
  • A 440V rated capacitor can be used as a direct replacement for a 370V rated capacitor with the same MFD value.
  • Compatible replacement for capacitors from brands including Genteq, MARS, Packard, and Aerovox.

Compatibility & Fitment

  • Designed for continuous duty in single-phase motor applications.
  • Commonly used in HVAC systems, including air conditioner condenser units and heat pumps.
  • Suitable for compressor motors and fan motors.
  • Also used in pool pumps, refrigerators, furnaces, and other motor-driven equipment.

When to Replace

  • Motor hums but fails to start or operates intermittently.
  • Fan motor runs slower than normal or requires a manual push to start.
  • Compressor does not start, preventing the system from cooling.
  • Visible damage to the old capacitor, such as a bulging top, cracks, or fluid leakage.
  • Capacitance measures outside the rated 25 MFD ± 5% range when tested with a multimeter.

Installation Tips

  • Warning: Disconnect all electrical power to the unit before handling or replacing the capacitor.
  • Capacitors can hold a dangerous electrical charge. Safely discharge the old capacitor by shorting across the terminals with an insulated tool.
  • Before installing, verify the MFD and voltage ratings of the new capacitor match the requirements of your equipment.
  • Note the wire placement on the old capacitor's terminals before disconnecting.
  • Ensure the new capacitor is securely mounted and all wire connections are tight.
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  • Step 1

    Step 1

    Turn off the power and locate the capacitor
  • Step 2

    Step 2

    Discharge any stored electricity by shorting the terminals
  • Step 3

    Step 3

    Take a photo or note how the wires connect. Disconnect wires & install the new capacitor.
  • Step 4

    Step 4

    Reassemble and test

FAQ

Common signs of a failing capacitor include a motor that hums but fails to start, a fan that requires a manual push to get spinning, or an air conditioner that trips the breaker. If the top of the capacitor is domed or bulging, or if you notice a burnt smell or leaking oil, the unit has failed and must be replaced.
Yes, this capacitor is rated for both 370 VAC and 440 VAC. It is safe to use this part in any application that calls for a 25 uF capacitor with a voltage rating of 370V, 440V, or lower.
The ±5% tolerance indicates that the actual capacitance can range between 23.75 uF and 26.25 uF. This is the industry-standard range for motor run capacitors, ensuring the motor receives the correct phase shift for efficient operation.
This is a single-run capacitor designed for motors that require a single 25 uF value. It is not a dual-run capacitor, which would have three terminals and two different capacitance values (such as 25/5 uF).
Installation typically takes 15 to 30 minutes. You will need a screwdriver to access the electrical panel and a pair of needle-nose pliers to disconnect the spade terminals. Always ensure the power is disconnected at the breaker before beginning work, and use an insulated screwdriver to discharge the old capacitor by touching the terminals together before handling.
The most common cause of failure is heat exposure. Capacitors are sensitive to high ambient temperatures and the internal heat generated by the motor. Over time, the internal dielectric fluid breaks down, leading to a loss of capacitance. Ensuring your condenser coils are clean and the fan is unobstructed helps keep the motor and capacitor running at optimal temperatures.