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15+5 MFD 370/440V Dual Run Capacitor

15+5 MFD 370/440V Dual Run Capacitor

Best price now

$15.95at National HVAC PartsChecked Nov 9

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Price facts

  • Last seen at $15.95 at National HVAC Parts on Nov 9.
  • Our take on the 15+5 MFD 370/440V Dual Run Capacitor

    A dual run capacitor that packs a 15 MFD compressor section and a 5 MFD condenser fan section into one round aluminum canister. It replaces two separate run capacitors, which saves space inside the unit and simplifies wiring. The 370/440V rating covers most residential AC systems, and the three-prong layout is labeled HERM, FAN and COM. It suits anyone replacing a failed dual cap on a home condenser, though buyers must match the MFD values and terminal layout to the original part.

    Best forReplacing a failed dual run capacitor on a residential AC condenserHomeowners and techs who want one part instead of two single capacitorsUnits needing a 15 MFD compressor and 5 MFD fan section
    Pros
    • Two capacitors in one canister saves space and wiring
    • 370/440V rating covers most residential systems
    • Terminals labeled HERM, FAN and COM for straightforward hookup
    • ±6% capacitance tolerance
    • Round aluminum canister fits standard mounting brackets
    Cons
    • Must match the original MFD values exactly or the motor runs wrong
    • Wrong wiring can damage the compressor or fan motor
    • No discharge resistor mentioned, so charge must be bled manually
    • Fails without warning like any run capacitor

    15+5 MFD 370/440V Dual Run Capacitor prices at every store

    • National HVAC PartsNew

      In stockReturn policy

      $15.95Checked Nov 9
      Visit National HVAC Parts

    About the 15+5 MFD 370/440V Dual Run Capacitor

    This is a 15+5 MFD dual run capacitor. The 15 MFD side serves the compressor, and the 5 MFD side serves the condenser fan motor. One capacitor takes the place of two separate run capacitors, which saves space and simplifies wiring.

    It has three terminals: HERM for the compressor, FAN for the condenser fan motor, and COM for the common connection to the contactor. The larger MFD value is always the compressor side, and the smaller value is the fan motor side. The body is a round aluminum canister rated 370/440V.

    Capacitance
    15+5 MFD (±6%)
    Voltage
    370/440 VAC, 50/60Hz
    Terminals
    3-prong: HERM, FAN, COM
    Shape
    Round
    Material
    Aluminum canister
    HERM wiring
    Compressor start winding (usually a brown or yellow wire)
    FAN wiring
    Condenser fan motor (usually the brown wire from the motor)
    COM wiring
    Common, connects to the contactor (L2 side)
    Single-cap option
    A 15 MFD cap (HERM to COM) for the compressor and a 5 MFD cap (FAN to COM) for the fan motor can stand in for the dual cap

    Questions and answers

    How do I tell which side is the compressor and which is the fan?
    The larger value, 15 MFD, is the compressor side and connects to HERM. The smaller 5 MFD side is the fan motor and connects to FAN. COM goes to the contactor.
    Can I replace this with two single capacitors?
    Yes. A 15 MFD single capacitor for the compressor and a 5 MFD single for the fan motor will do the same job. The dual unit just saves space and wiring.
    Will this work on my 370V system?
    Yes. The 370/440V rating covers both 370V and 440V residential systems, so it works on either.
    What wires go to each terminal?
    HERM takes the compressor start winding, usually brown or yellow. FAN takes the brown wire from the fan motor. COM connects to the contactor on the L2 side.
    What tolerance does it have?
    Capacitance is rated at ±6%, so the actual value stays close to 15 and 5 MFD.
    Do I need to discharge it before handling?
    Yes. Run capacitors can hold a charge, so bleed the terminals with an insulated resistor before touching the wires.
    Where is the 15+5 MFD 370/440V Dual Run Capacitor cheapest?
    At National HVAC Parts, for $15.95, as of our latest check.

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