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Serving The Fresno & Madera Area


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How A Bad Capacitor Affects Your Air Conditioner

When you set your thermostat to a certain temperature you expect that your air conditioning system will automatically turn on and start to remove heat from your home. But if your system won’t turn on or if only parts of your system are running it could be the fault of the capacitors in your HVAC system. Purl’s Sheet Metal & Air Conditioning is proud to offer a full range of air conditioning repair services in Fresno, CA and we wanted to share a little bit with you about capacitors. Give us as call today if you have any questions or if you’re having any problems with your air conditioning system.

Fresno Air Conditioning Repair FAQ: Capacitors

Capacitors are kind of like an energy booster for the motors in your air conditioning system. They store energy and deliver it to the motors when they need. Your AC has a couple critical motors that use capacitors: both the fans each have their own capacitors and the compressor motor also has its own. If any of these capacitors fail then those motors won’t be able to start up. As a homeowner, you can determine which capacitor is out by listening to your system. If you hear a low, electronic hum coming from any of your components it could be the motor trying to start up on its own and failing. Also, if you only hear certain components running then you can determine that the capacitor for the failing component needs to be replaced.

Also, if you aren’t getting enough cooling in your home it could be the fault of the capacitor. For example, your compressor is there to compress a refrigerant that is used to remove heat from your home. If the compressor doesn’t start up then the AC can’t remove heat. If the fan motors’ capacitors aren’t working then the system won’t be able to push cool air into your home which will likely leave you uncomfortable.

For any air conditioning repair service that you need, call the Fresno air conditioning specialists at Purl’s Sheet Metal & Air Conditioning.

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