Carrier Brand 15 uF MFD 370/440 VAC Oval Run Start Capacitor CBB65 - Fits AC Motor, Condenser, Heat Pump - 2 Pack
Two 15 uF 370/440 VAC oval run start capacitors for AC motors and heat pumps.
15 uF 370/440 VAC oval run capacitor with dimensions shown for AC motor and condenser replacement.
Specification chart for 15 uF 370/440 VAC CBB65 run start capacitor with technical details.
Diagram showing 2-terminal oval run capacitor with C, F, and H/HERM connection labels for AC motor and heat pump.
Infographic showing 15 uF 370/440 VAC oval run capacitor features including aluminum case and metalized film construction.
Educational infographic showing 15 uF 370/440 VAC oval run capacitor specifications and selection guide.
Technician installing a 15 uF 370/440 VAC oval run start capacitor into an AC condenser unit.
15 uF 370/440 VAC oval run start capacitor for AC condenser and heat pump motor repair.
Infographic showing 15uF run capacitor applications for AC, refrigerator, heat pump, and compressor motor start-up.
Two 15 uF 370/440 VAC oval run start capacitors for AC motors and heat pumps.
15 uF 370/440 VAC oval run capacitor with dimensions shown for AC motor and condenser replacement.
Specification chart for 15 uF 370/440 VAC CBB65 run start capacitor with technical details.
Diagram showing 2-terminal oval run capacitor with C, F, and H/HERM connection labels for AC motor and heat pump.
Infographic showing 15 uF 370/440 VAC oval run capacitor features including aluminum case and metalized film construction.
Educational infographic showing 15 uF 370/440 VAC oval run capacitor specifications and selection guide.
Technician installing a 15 uF 370/440 VAC oval run start capacitor into an AC condenser unit.
15 uF 370/440 VAC oval run start capacitor for AC condenser and heat pump motor repair.
Infographic showing 15uF run capacitor applications for AC, refrigerator, heat pump, and compressor motor start-up.
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15 uF MFD 370/440 VAC Oval Run Start Capacitor CBB65 - Fits AC Motor, Condenser, Heat Pump - 2 Pack

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CBB6515 uF/MFD 370 or 440 Volt 50/60 Hz Oval Run Start Capacitor

Key Features

  • Model: CBB65
  • Capacitance: 15 uF/MFD
  • Capacitance Tolerance: ± 5%
  • Voltage Rating: 370 VAC or 440 VAC (dual rated)
  • Frequency: 50/60 Hz
  • Shape: Oval
  • Dimensions (L x W x H): 1.97 in x 1.24 in x 2.56 in
  • Operating Temperature Range: -40°C to +70°C
  • Construction: Metalized polypropylene film, oil-filled
  • Safety Certifications: UL and CSA listed
  • Contains no Polychlorinated Biphenyls (PCBs)

Replaces / Cross-Reference Part Numbers

  • Direct replacement for any oval capacitor with matching 15 uF capacitance and 370V or 440V rating.
  • Verify physical dimensions for proper fit in the mounting bracket.

Compatibility & Fitment

  • Designed for single and three-phase AC motor applications.
  • Commonly used in HVAC systems, including air conditioner condensers, heat pumps, compressors, and fan motors.
  • Compatible with equipment requiring a 15 MFD run capacitor for either 370 Volt or 440 Volt systems.

When to Replace

  • Motor hums but fails to start or struggles to start.
  • Fan blades rotate slower than normal or require a manual push to start.
  • *AC unit is running but not blowing cold air.
  • Visible damage to the existing capacitor, such as swelling, bulging, or fluid leakage.

Installation Tips

  • Disconnect all electrical power to the equipment before beginning service.
  • Safely discharge the existing capacitor by shorting the terminals with a resistor or an insulated screwdriver.
  • Note the wire placement on the old capacitor terminals before disconnecting.
  • Confirm the uF/MFD rating matches the original part exactly.
  • The voltage rating of the replacement capacitor must be equal to or greater than the original (e.g., a 440V capacitor can replace a 370V, but not vice-versa).
  • Secure the new capacitor in place and reconnect the wires to the correct terminals.
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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 humming sound from the motor without it starting, the fan or motor struggling to reach full speed, or the unit failing to turn on entirely. If the top of the capacitor appears domed or bulging, or if you notice any leaking fluid or a burnt smell, it should be replaced immediately.
This 15 MFD capacitor is a universal replacement for HVAC systems, air conditioners, heat pumps, and blower motors that require a 15 microfarad rating. It is rated for both 370V and 440V applications, making it a versatile fit for most standard motor-run requirements.
This unit features a capacitance tolerance of ±5%, ensuring it meets the precise electrical requirements for efficient motor operation and startup performance.
Installation typically takes 15 to 30 minutes. You will need a screwdriver to access the service panel and insulated needle-nose pliers to remove and attach the spade connectors. Always ensure the power is disconnected at the breaker before beginning, and use an insulated screwdriver to safely discharge the old capacitor by bridging the terminals before handling.
Yes. Capacitors store a significant electrical charge even after the power is turned off. Always turn off the power at the disconnect or breaker box. Before touching the terminals, use an insulated-handle screwdriver to short across the terminals to safely discharge any remaining energy.
Run capacitors are subject to extreme heat and electrical stress during operation. Over time, the internal dielectric material degrades, leading to a loss of capacitance. High ambient temperatures, frequent power surges, and restricted airflow around the condenser unit can accelerate this wear.