Our Top Picks:
| Image | Title | Brands | Buy |
|---|---|---|---|
  | BlueNatHxRPR 30-5 MFD uF CBB65 Capacitor for Air Conditioner Withstand 450V AC | BlueNatHxRPR | View Price |
| MAXRUN 45+5 MFD uf 370 or 440 Volt VAC 45/5 Microfarad Dual Run Capacitor for Air Conditioner | MAXRUN | View Price |
| TOTALINE 35 + 5 MFD uf P291-3554RS 370 or 440 Volt Dual Run Round Capacitor Made for Condenser Straight Cool or Heat. | TOTALINE | View Price |
| GE Genteq Capacitor round 40/5 uf MFD 440 volt 97F9838 | GE | View Price |
| 40 + 5 uf/Mfd Round Dual Universal Capacitor Amrad USA2235 w/CPT Terminal Used for 370 or 440 VAC | AMRAD | View Price |
| Packard TRCFD455 45+5MFD 440/370V Round Run Capacitor Replaces PRCFD455 | TITAN PRO | View Price |
| Turbo 200 Motor Run Capacitor | American Radionic Company | View Price |
| Lennox 100335-12 - 45 + 5 uf MFD 440 Volt VAC Jard Replacement | Lennox | View Price |
| ClimaTek Round Capacitor - fits Bryant # HC98KA041D | 40/5 uf MFD 370/440 Volt VAC | ClimaTek | View Price |
Frequently asked questions:
How does an AC capacitor work?
An AC capacitor gives the preliminary jolt of electrical energy your air conditioner’s motors have to run successfully. It stores electricity and sends it to your system’s motors in powerful bursts. That gets your unit revved up because it starts the cooling cycle. As soon as your AC is up and working, the capacitor reduces its energy output, however, still provides a gentle current of energy until the cycle finishes. Voltage exhibits how much electrical present is transferred via the capacitor. The extra voltage in your capacitor, the quicker current moves throughout it.
Most capacitors range from 5 MFD to 80 MFD. They might look and perform similarly to batteries, however, capacitors are not batteries. They’re connected to wiring inside your air-con system. This means you’ll be able to simply open your unit’s doorways and pop a brand new capacitor inside if it’s time for a new one. The truth is, don’t change your AC capacitor yourself as a result of their high-voltage gadgets that would significantly harm you, even when the power is turned off. We’ll speak extra about this later
How to test AC capacitors?
You can contact your local Trane dealer if you happen to need assistance to discern, whether your AC capacitor isn’t working the way it ought to and must be changed. These trained professionals use special instruments and training to measure. The capacitor’s current, voltage, and resistance. You shouldn’t try doing any of this yourself as tinkering along, with your capacitor could result in serious injury or death. You need to hire an HVAC professional that can assist you.
What is the use of a capacitor for your air conditioner?
Single-phase induction motors cannot begin on their very own. They want a phase shift to get the rotating magnetic area going. The ac capacitors offer that section shift. Usually, there’s a capacitor for the compressor and one other for the fan On increased HP compressors there may be a 3rd capacitor used only to extend the beginning torque to get the compressor spinning against the pressure. That one is switched out of the circuit as quickly because the compressor will get up to speed.
Typical values for the best capacitors are:
Fan cap: 5–15uF, 270–440 volts.
Run cap: 25–75uF, 270–440 volts.
Start cap: 120–400 uF, 270–440 volts.