[Lifetime Warranty] [UL Certified] 70+7.5 uF MFD 370/440 VAC Round Dual Run Capacitor - Fits Air Conditioner or Heat Pump Condenser
70+7.5 uF 370/440 VAC round dual run capacitor for air conditioner and heat pump condenser units.
70+7.5 uF MFD 370/440 VAC round dual run capacitor with 5.12-inch height and 2.36-inch diameter dimensions.
Specification chart for 70+7.5 uF 370/440 VAC round dual run capacitor for air conditioner or heat pump.
Close-up of 70+7.5 uF dual run capacitor terminals labeled for common, compressor, and fan connections.
BlueStars 70+7.5 uF 370/440 VAC round dual run capacitor with aluminum case and metalized film construction details.
Educational infographic showing how to choose a 70+7.5 uF 370/440 VAC round dual run capacitor for HVAC systems.
70+7.5 uF 370/440 VAC round dual run capacitor for air conditioner and heat pump condenser units.
Technician installing a 70+7.5 uF 370/440 VAC round dual run capacitor into an air conditioner condenser unit.
Infographic showing wide range applications for 70+7.5 uF dual run capacitor in HVAC and refrigeration systems.
Infographic showing 4-step installation guide for 70+7.5 MFD dual run capacitor on an air conditioner unit.
70+7.5 uF 370/440 VAC round dual run capacitor for air conditioner and heat pump condenser units.
70+7.5 uF MFD 370/440 VAC round dual run capacitor with 5.12-inch height and 2.36-inch diameter dimensions.
Specification chart for 70+7.5 uF 370/440 VAC round dual run capacitor for air conditioner or heat pump.
Close-up of 70+7.5 uF dual run capacitor terminals labeled for common, compressor, and fan connections.
BlueStars 70+7.5 uF 370/440 VAC round dual run capacitor with aluminum case and metalized film construction details.
Educational infographic showing how to choose a 70+7.5 uF 370/440 VAC round dual run capacitor for HVAC systems.
70+7.5 uF 370/440 VAC round dual run capacitor for air conditioner and heat pump condenser units.
Technician installing a 70+7.5 uF 370/440 VAC round dual run capacitor into an air conditioner condenser unit.
Infographic showing wide range applications for 70+7.5 uF dual run capacitor in HVAC and refrigeration systems.
Infographic showing 4-step installation guide for 70+7.5 MFD dual run capacitor on an air conditioner unit.
Lifetime Warranty

[Lifetime Warranty] [UL Certified] 70+7.5 uF MFD 370/440 VAC Round Dual Run Capacitor - Fits Air Conditioner or Heat Pump Condenser

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(UL Certified) 70+7.5 MFD uf 370 or 440 Volt VAC Round Dual Run Capacitor

Key Features

  • Dual capacitance: 70 Microfarad (MFD) for the compressor and 7.5 Microfarad (MFD) for the fan motor.
  • Dual voltage rating: Operates at either 370 or 440 Volts AC.
  • Terminal type: Standard 1/4 inch male quick-disconnect terminals.
  • Operating frequency: 50 / 60 Hz.
  • Operating temperature range: -40°C to +70°C (-40°F to +158°F).
  • Safety certifications: UL recognized and CSA approved.
  • Reliability standard: Meets EIA-456-A industry specifications for up to 60,000 hours of operational life.

Replaces / Cross-Reference Part Numbers

  • This is a direct replacement for any round dual run capacitor with matching 70/7.5 MFD and 370V or 440V specifications.
  • Replaces part number USA2222A and other capacitors with similar ratings.

Compatibility & Fitment

  • Application: Designed for HVAC systems, including central air conditioners and heat pumps, to power the compressor and fan motors.
  • Physical dimensions: 2.5 inch diameter x 4.33 inch height. Verify space in your unit before ordering.
  • Terminal labels: "C" for Common, "HERM" for the compressor, and "FAN" for the fan motor.

When to Replace

  • The outdoor unit's fan is not spinning or requires a manual push to start.
  • The compressor makes a humming noise but does not start.
  • The AC unit runs but does not blow cold air.
  • The existing capacitor shows physical signs of failure, such as bulging, swelling, or leaking fluid.
  • Capacitance measurement is outside the rated tolerance (typically +/- 6%) when tested with a multimeter.

Installation Tips

  • Disconnect all electrical power to the HVAC unit at the circuit breaker and service panel before servicing.
  • Safely discharge the old capacitor by shorting across the terminals with an insulated-handle screwdriver.
  • Document or photograph the wire connections to each terminal ("C", "HERM", "FAN") before removal.
  • Ensure the MFD ratings (70/7.5) of the new capacitor match the old one exactly. The voltage rating can be equal to or higher than the original.
  • Secure the new capacitor with the original mounting bracket and reconnect wires to the corresponding 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

Match all of the key ratings on your original capacitor: 70/7.5 uF (MFD), dual run style, and a voltage rating of 370 or 440 VAC. A dual run capacitor has three terminals typically labeled C, FAN, and HERM, and is commonly used in outdoor air conditioner or heat pump condensers to run both the compressor and condenser fan motor from one capacitor.
Yes, in most HVAC applications a 440 VAC capacitor can replace a 370 VAC capacitor as long as the capacitance values match exactly at 70+7.5 uF and the part style is the same. The reverse is not recommended: do not use a 370 VAC capacitor where a 440 VAC capacitor is required.
Common signs include the outdoor unit humming but not starting, the condenser fan not spinning, the compressor struggling to start, intermittent cooling, breaker trips during startup, or a visibly swollen or leaking capacitor. A failed capacitor can affect either the fan side, the compressor side, or both.
Yes. A dual run capacitor combines two capacitance values in one can: 70 uF is typically for the compressor circuit and 7.5 uF is typically for the condenser fan motor circuit. Terminal markings are usually C for common, HERM for compressor, and FAN for fan motor. Always verify the wiring against your unit's diagram before installation.
Basic replacement usually requires a screwdriver or nut driver, needle-nose pliers, and a way to confirm power is off. Shut off the disconnect and breaker, then verify the unit is de-energized before touching any wires. Capacitors can retain a charge, so safe discharge procedures should be followed. Taking a photo of the wire locations before removal helps prevent wiring mistakes. Many replacements take about 15 to 30 minutes if access is straightforward.
Confirm the old capacitor's microfarad rating and voltage rating, inspect the terminals and wire connectors for heat damage or looseness, and check whether the condenser fan motor or compressor was drawing excessive current. If a capacitor failed repeatedly, the root cause may be a weak motor, hard-starting compressor, poor airflow through the condenser coil, high operating temperature, or low-quality electrical connections.