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AmRad
AmRad US4520 Dual Run Capacitor 45/5 uF 440V Round

AmRad US4520 Dual Run Capacitor 45/5 uF 440V Round

Best price now

$32.60at AmazonChecked Nov 9

Compared across 2 stores. Prices are checked against each store and labelled with when. As an Amazon Associate, Deal.ai earns from qualifying purchases.

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Price facts

  • Last seen at $32.60 at Amazon on Nov 9.
  • Checked at 2 stores.

    • Our take on the AmRad US4520 Dual Run Capacitor 45/5 uF 440V Round

    The AmRad US4520 is a dual run capacitor rated 45/5 uF at 440 VAC in a round case. It replaces the two separate capacitors in many air conditioner condensing units: the 45 uF section starts the compressor and the 5 uF section runs the condenser fan motor. AmRad is a US-made brand that HVAC technicians know for tight tolerances and long service life, and this dual design saves wiring and space compared with two single capacitors. It suits AC service techs and confident DIYers replacing a failed compressor or fan capacitor.

    Best forAC technicians servicing condensing unitsDIYers replacing a failed compressor/fan capacitorOwners of 45/5 uF round-capacitor condensing unitsRepairs where one dual part beats two singles
    Pros
    • Two capacitances in one round can, so one part covers compressor and fan
    • 440 VAC rating gives headroom over 370 VAC parts on 240 V systems
    • US-made with a solid reputation among HVAC techs
    • Round case fits standard condenser capacitor straps and brackets
    • Clear terminal markings make the C, HERM and FAN wiring easy to identify
    Cons
    • Must match the old capacitor's microfarad values and voltage exactly
    • Wrong wiring can damage the compressor, so power must be cut and the old part photographed first
    • Round cans need the right strap or bracket; some units use oval capacitors
    • Fails like any run capacitor, and a bulged top or leaking oil means replacement

    AmRad US4520 Dual Run Capacitor 45/5 uF 440V Round prices at every store

    • NorthAmericaHvac.comNew

      In stock

      $42.00+ $3.65 shippingChecked Nov 9
      Visit NorthAmericaHvac.com
    • AmazonNew

      Availability unknown

      As an Amazon Associate, Deal.ai earns from qualifying purchases.

      $32.60Checked Nov 9
      Visit Amazon

    AmRad US4520 Dual Run Capacitor 45/5 uF 440V Round price history

    Lowest price we've seen: $32.60 on Nov 9 at Amazon. Tracked across 2 stores since Nov 9.

    What reviewers say

    HVAC techs and DIYers rate AmRad dual run capacitors highly for build quality and for holding their rated capacitance. Owners report AC units starting reliably again after replacement. The main complaints are about getting the microfarad rating and wiring right, not the part itself.

    What people mention
    • Build qualityPraisedOwners describe the can as solid and well sealed, holding up in hot outdoor units.
    • CapacitancePraisedTechs say the measured microfarad values stay close to the 45/5 rating.
    • FitMixedThe round case fits standard straps, but some units take an oval capacitor instead.
    • InstallationMixedWiring is simple once the old part is noted, but mixing up the HERM and FAN terminals causes trouble.
    • ReliabilityPraisedReviewers report the AC starting and running normally again after replacement.

    Specifications

    Capacitance
    7.5 MFD
    Voltage Rating
    440 VAC
    Capacitance Tolerance
    +/-10%
    Packaging Type
    Single unit
    Dimensions
    2.38 in. (height)
    Shape
    Round

    Questions and answers

    What does 45/5 uF mean on this capacitor?
    It is two capacitors in one can. The 45 uF section connects to the compressor (HERM) and the 5 uF section to the condenser fan (FAN), with a shared common terminal.
    Can I replace a 370 VAC capacitor with this 440 VAC one?
    Yes, as long as the microfarad values match. A higher voltage rating is safe; a lower one is not. Match the uF exactly and keep the voltage at or above the original.
    How do I wire it?
    Cut power at the breaker and discharge the old capacitor first. Note which wire went to C, HERM and FAN, then move them to the same terminals on the new part.
    Will it fit my air conditioner?
    It fits units that use a round 45/5 uF capacitor. Check the old part's shape and dimensions; some units use oval capacitors or a different uF combination.
    How do I know the capacitor has failed?
    Common signs are the compressor humming without starting, the fan not spinning, or a bulged top or oily residue on the can. A multimeter capacitance test confirms it.
    Is this the same as the USA2206 part number?
    Yes. The US4520 is sold under the USA2206 manufacturer part number, so check that number against your old capacitor or the unit's wiring diagram.
    Where is the AmRad US4520 Dual Run Capacitor 45/5 uF 440V Round cheapest?
    At Amazon, for $32.60, as of our latest check.
    Where can I buy the AmRad US4520 Dual Run Capacitor 45/5 uF 440V Round?
    2 stores we checked sell it, including NorthAmericaHvac.com, Amazon.