One of the most significant components of an air conditioner is the capacitor. This small, battery-like component transfers electrical power from the home to the air conditioner’s compressor, outdoor fan motor, and blower fan. When it fails, an HVAC contractor must replace the part before your unit can work efficiently. Here are some of the most common signs that your HVAC system has a faulty capacitor.

How to Know if Your AC Capacitor Is Failing

1. Lacking Cold Air

Start by verifying that your thermostat is on the correct setting. If it is, turn the unit off, let it rest for 10 minutes, and then turn it back on. If you still are not receiving cool air after a few restarts, the AC capacitor likely has damage.

This is because the fan’s motor isn’t receiving enough power from the capacitor to turn the fan, preventing it from transferring heat from inside your home to the outdoors. Don’t delay in contacting an HVAC contractor for assistance. Running the system with a bad capacitor could damage the motor beyond repair.

2. Humming Noise

A failing capacitor can put mechanical stress on your HVAC system, resulting in a humming sound whenever the outside unit operates. This happens because the fan’s motor tries to turn on even though the fan cannot move. Sometimes the fan will eventually start after hesitating. However, you should schedule a professional inspection of the system before this issue breaks the fan completely.

3. Rising Energy Bills

Your HVAC system must work harder to cool your home if it has a bad capacitor, as it cannot store enough energy for continuous use. This causes higher than average energy consumption, even if you aren’t running the system more often. Even though the motor isn’t working correctly, other parts are still functioning, and they must overcompensate for the failing components.

When you need an HVAC contractor to inspect your system, contact R&S McKay Heating & Air Conditioning Inc. They have been helping the residents of Lawrenceville, GA, with air conditioning repairs for more than 20 years. The experienced HVAC contractors can evaluate your system and diagnose issues with the capacitor, fan, or motor. Call (404) 978-3082 to schedule an appointment. Visit the website to learn more about their services.