30+7.5 uF MFD ±5% 370/440 VAC Dual Run Start Round Capacitor 50/60 Hz 10000AFC - Fits Condenser, Heat Pump
30+7.5 uF dual run round capacitor for condenser and heat pump units with terminal connectors.
Infographic showing wide range applications for 30+7.5 MFD dual run capacitor in HVAC and refrigeration systems.
Informational graphic showing two 30+7.5 uF dual run capacitors with signs indicating when to replace your AC capacitor.
30+7.5 uF dual run capacitor for AC condenser and heat pump units, shown in a lifestyle marketing graphic.
BlueStars 30+7.5 uF dual run capacitor with dimensions labeled for condenser and heat pump HVAC systems.
Specification chart for 30+7.5 uF 370/440 VAC dual run round capacitor with technical details and dimensions.
Top view of 30+7.5 MFD dual run capacitor showing C, HERM, and FAN terminals with labeled connection points.
BlueStars 30+7.5 uF dual run capacitor with aluminum case and metalized polypropylene film construction.
Informational guide on how to choose a 30+7.5 uF dual run capacitor for HVAC condenser and heat pump systems.
Technician repairing an AC condenser unit with a 30+7.5 uF dual run capacitor featured in the foreground.
Technician repairing an HVAC condenser unit with a 30+7.5 MFD dual run start capacitor shown in the foreground.
Four-step installation guide for 30+7.5 uF dual run capacitor for AC condenser and heat pump units.
30+7.5 uF dual run round capacitor for condenser and heat pump units with terminal connectors.
Infographic showing wide range applications for 30+7.5 MFD dual run capacitor in HVAC and refrigeration systems.
Informational graphic showing two 30+7.5 uF dual run capacitors with signs indicating when to replace your AC capacitor.
30+7.5 uF dual run capacitor for AC condenser and heat pump units, shown in a lifestyle marketing graphic.
BlueStars 30+7.5 uF dual run capacitor with dimensions labeled for condenser and heat pump HVAC systems.
Specification chart for 30+7.5 uF 370/440 VAC dual run round capacitor with technical details and dimensions.
Top view of 30+7.5 MFD dual run capacitor showing C, HERM, and FAN terminals with labeled connection points.
BlueStars 30+7.5 uF dual run capacitor with aluminum case and metalized polypropylene film construction.
Informational guide on how to choose a 30+7.5 uF dual run capacitor for HVAC condenser and heat pump systems.
Technician repairing an AC condenser unit with a 30+7.5 uF dual run capacitor featured in the foreground.
Technician repairing an HVAC condenser unit with a 30+7.5 MFD dual run start capacitor shown in the foreground.
Four-step installation guide for 30+7.5 uF dual run capacitor for AC condenser and heat pump units.
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30+7.5 uF MFD ±5% 370/440 VAC Dual Run Start Round Capacitor 50/60 Hz 10000AFC - Fits Condenser, Heat Pump

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30+7.5 uF ±5% 30/7.5 MFD 370/440 VAC Dual Run Start Round Capacitor 50/60Hz 10000AFC

Key Features

  • Capacitance: 30 + 7.5 Microfarad (MFD)
  • Capacitance Tolerance: ±5%
  • Voltage Rating: 370 or 440 VAC (dual rated)
  • Frequency: 50/60 Hz
  • Shape: Round
  • Terminals: 3 (Common, Fan, Hermetic Compressor)
  • Terminal Type: 0.250 in. quick-connect male blades
  • Operating Temperature: -40¬∞C to +70¬∞C (-104¬∞F to +158¬∞F)
  • Safety Rating: 10,000 AFC (Available Fault Current)
  • Construction: Aluminum case with steel cover
  • Dimensions: 2 in. Diameter x 4.6 in. Height

Replaces / Cross-Reference Part Numbers

This capacitor directly replaces any dual run capacitor with matching specifications. Verify the following ratings on your original capacitor:

  • Capacitance: 30/7.5 uF or 30+7.5 MFD
  • Voltage: 370V or 440V (this 370/440V unit can replace either)
  • Shape: Round (ensure physical dimensions allow for a secure fit)

Compatibility & Fitment

Designed for use in HVAC systems, including central air conditioners and heat pumps. This dual capacitor provides power to two electric motors simultaneously:

  • A higher capacitance terminal (30 uF) for the compressor motor (HERM).
  • A lower capacitance terminal (7.5 uF) for the condenser fan motor (FAN).

When to Replace

A capacitor may need replacement if you observe these symptoms:

  • Outdoor unit hums but the fan does not spin.
  • Compressor fails to start or struggles to turn on.
  • AC unit starts but then shuts down shortly after.
  • Visible signs of damage, such as a bulging or leaking top.
  • Capacitance measures outside the ¬±5% tolerance when tested with a multimeter.

Installation Tips

  • WARNING: Disconnect all electrical power to the HVAC unit before handling the capacitor.
  • Safely discharge the old capacitor by carefully shorting across the terminals with an insulated-handle screwdriver.
  • Document or photograph the wire connections to the C, FAN, and HERM terminals before removal.
  • Connect the wires to the corresponding terminals on the new capacitor.
  • Secure the new capacitor in the mounting bracket to prevent vibration.
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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 the air conditioning unit failing to start, a humming sound coming from the condenser without the fan spinning, or the fan motor running slowly. If the top of the capacitor appears domed or bulging, or if you notice any leaking oil or burnt smell, the unit has likely failed and requires immediate replacement.
Yes. This capacitor is rated for both 370V and 440V applications. It is perfectly safe to use a 440V rated capacitor in a system that originally called for a 370V part, as the higher voltage rating simply indicates a higher tolerance for electrical stress.
These labels identify the connections for your system: 'C' stands for Common, 'HERM' is for the compressor (Hermetic) motor, and 'FAN' is for the condenser fan motor. Ensure you transfer the wires from your old capacitor to the corresponding terminals on the new one exactly as they were connected.
Yes, provided your system requires a 30/7.5 MFD rating. This dual run capacitor is designed to replace any standard round 30+7.5 MFD capacitor used in HVAC condenser units, heat pumps, and refrigeration compressors, regardless of the brand, as long as the microfarad (MFD/uF) rating matches your original part.
Installation typically takes 15 to 30 minutes. You will need a screwdriver or nut driver to remove the access panel and a pair of needle-nose pliers to disconnect and reconnect the wire terminals. Always ensure the power to the HVAC unit is completely turned off at the disconnect box or breaker before beginning work.
Yes. Capacitors store a significant electrical charge even after the power is turned off. Before touching the terminals, you must discharge the capacitor by using an insulated-handle screwdriver to bridge the 'C' terminal to the 'HERM' terminal, and then the 'C' terminal to the 'FAN' terminal. This prevents the risk of electrical shock.