When a summer heat wave hits Illinois, there’s nothing worse than turning on the AC and getting no cold air. A number of problems could be in play, so it’s important to know what you are dealing with. In this situation, a bad AC capacitor is often to blame. Here is how to diagnose and handle this common problem.
Bad AC Capacitor Symptoms
A capacitor is an electrical device that activates a heavier component in the system. In this case, the capacitor tells the fan and compressor on the outdoor unit to “kick on” in response to measurements from the thermostat. If the capacitor has failed, you’ll have warm air blowing in your house and may hear a humming from the outdoor unit.
You can confirm your suspicions by calling a professional HVAC company to send a certified technician out to check your AC capacitor.
How to Replace AC Capacitor
It’s important to understand that your outdoor heating and cooling unit utilizes heavy voltage that can be deadly. You should always call an HVAC company with certified technicians to perform this service to ensure both the safety of yourself and your home.
How Often Should You Replace AC Capacitor?
Like light bulbs, AC capacitors only need to be replaced when they stop working. During hot spells, your unit will be activating more frequently, increasing the demands on your capacitor–and the likelihood that it will finally fail.
You shouldn’t do this repair yourself. Contact a professional HVAC company. They’ll have the skills and quality parts to get your capacitor replaced and your home back on track to be cool and comfortable.