An air conditioner capacitor is the energy storage area of the unit. They are in charge of sending jolts to the motor, to start it up or to keep it running. It is very important that you ensure your capacitor is fully functional, so that your air condition will work as effectively as it should.


Here, we’re going to show you a very simple way you can figure out if your capacitor is working properly. If you notice that the fan in you’re A/C isn’t working, but the unit is making a humming sound, then use a long, sturdy object to give the fan blades a gentle push so that they start spinning again. If they spinning as they normally would, then it’s likely that you have a bad start capacitor.


You may now need to replace you’re A/C Capacitor and we’re going to show you just how to do that.

  • You need to turn the power of your unit off at the disconnect or the breaker panel.
  • Then, you have to find the capacitor and carefully inspect it. Especially check to see if it’s misshapen.
  • Carefully discharge the power of the capacitor.
  • Unscrew the metal band holding in the capacitor so that you can dismount it.
  • Make sure that you take a careful look at the way the wires are connected and then use needle-nosed pliers to disconnect them.
  • Now you need to find a replacement and attach it, so you need to know details, such as the make and model of the A/C. the voltage rating and the micro-farads.


If you are looking for an experienced and affordable heating and cooling contractor in Ottawa to handle all of your Ottawa HVAC needs, then give us a call to get professional help with your central air conditioner, furnace or fireplace for a complete home comfort experience. We have decades of experience in home heating and cooling and Capital City Heating & Cooling provides all HVAC services including heating & air conditioning installation, repair, service & maintenance in Ottawa and surrounding areas.