Five Reasons Your Air Conditioner Keeps Turning Off in Corona, California

Inland Empire Comfort
May 14, 2025
Air Conditioner Keeps Turning Off in Corona CA

Here in Corona, where summer temperatures can be blistering, you count on your air conditioner to keep things nice and cool. But what if your unit turns off by itself without fully cooling your home?



Learn the top causes of this issue below, then contact us for AC

repair services in Corona, CA.

Why Does My AC Keep Turning Off? Top Causes for Corona Homeowners

It’s incredibly frustrating when your air conditioner turns off by itself. Why does your system seem to have a mind of its own? Here are the top five reasons your system is shutting off by itself and what to do about them.


1. Your Air Conditioner Is Short-Cycling

Does your air conditioner run for a couple of minutes, shut off, and then start running again? If so, your unit could be short-cycling. This issue happens when your system isn’t the right size for your Corona home. It occurs because the air conditioner has to work harder to do its job, which can result in an overheated system.


If your system is short-cycling, the best solution is to replace it with another unit that better suits the size of your home. Our HVAC pros can hook you up with the perfect-sized unit for your abode.


2. You’re Having Thermostat Issues

If your air conditioner looks and sounds fine, the thermostat may be to blame for your cooling woes rather than the unit itself. To determine if the thermostat is the culprit, check to see whether its batteries are running low. Most electronic thermostats have a display that tells you when it’s time to change the batteries.


Still no luck? The thermostat might need calibration. You can perform this task yourself or have our HVAC experts handle it for you if you prefer.


3. You Have a Dirty Air Filter That Needs Replacement

Why does your AC keep turning off? An old, dirty filter may be to blame.


The filter inside your air conditioner wasn’t made to last forever. Although some can last for six months to a year, most need changing every 30 to 90 days. If you neglect to change your filter in time, it can get clogged with debris that causes the unit to overheat and shut off.

If this is your issue, simply replace the filter and try running the system again.


4. Your Refrigerant Levels Are Low

Just as we humans require blood to live, air conditioners need refrigerant to do their jobs. Refrigerant works by absorbing the warmth inside your Corona home and pushing it to the outdoor unit. If your refrigerant levels are low, perhaps due to a leak or faulty installation, the system can overheat and stop working.


Listen for a hissing noise near the unit to determine whether this is your issue. Some refrigerants also have a sweet chemical smell similar to nail polish remover.


5. The Unit Is Having Electrical Problems

If your air conditioner shuts off by itself, head to the circuit breaker. Cooling systems draw a lot of power and can cause the breaker to trip when they put too heavy of a demand on the electrical system. Try resetting the breaker and running the air conditioner again. If this doesn’t work, you might have a blown fuse.


Still having trouble? Call an electrician to take a look at your electrical system.

Considering AC replacement services

Why Does My AC Keep Turning Off? Call Our Experts in Corona, California, To Learn More

If you’re still having trouble with your system, reach out to Inland Empire Comfort today. Considering AC replacement services? We’ll help you pick the perfect system for your home in Corona, so feel free to reach out to us today.


Frequently Asked Questions

Have more questions about your air conditioner? Find the answers here.


Should I Turn Off My Unit If It’s Short-Cycling?

It’s not necessary to turn off your unit if it’s short-cycling unless the coils are frozen. If they are, leave the system off for a while to let the coils thaw.


Should I Replace an Air Conditioner That Keeps Turning Off?

In most cases, you don’t need to replace an air conditioner that keeps turning off. We can usually repair the problem for less than the cost of a replacement.


Why Does My AC Keep Turning Off After Five Minutes?

If your AC keeps turning off after five minutes, the problem might be a dirty filter, a thermostat issue, an electrical malfunction, or short-cycling.

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