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Why Is My AC Not Turning On? 4 Things to Check

October 30, 2023

In the heat of summer, the last thing you want to be asking is, ‘why is my AC not turning on?’ If you’ve recently turned your system on and it’s not functioning properly, you could be in this exact situation. And, from quick fixes to complete replacements, there are a lot of reasons your AC might not be working.


But, don’t panic! You can easily check a few common causes of AC failure yourself.


Fleetwood’s Heating & Cooling is committed to providing our customers with the information they need to figure out why their AC isn’t turning on. So, in today’s post, we’re going to give you a few recommendations that could help you diagnose some common heating and cooling issues.

A Fleetwood's employee diagnoses why AC is not turning on.

Start with the obvious, did you trip your circuit breaker?

A tripped circuit breaker is a very common reason that your AC may not be turning on. Whether you’re running too many appliances on one circuit or a power surge has overloaded your electrical system, your home’s electrical panel is the first place you should check. If you see that power to your AC is in the ‘off’ position, flip it to ‘on’ and try starting the AC system again.


Note: If you turn the circuit to ‘on’ and it continues to revert to ‘off,’ call an electrician and do not continue to flip the switch.

A dead thermostat battery can result in AC not turning on

If your circuits are all in the ‘on’ position and your AC’s still not working, you’ll want to check the thermostat. It may sound simple, but your thermostat tells your AC when to turn on. If it’s not doing its job, your AC will simply stay off. Check your thermostat’s display to ensure that it’s lit. If it’s dark, you may just need to change the batteries.

Is your air conditioner leaking refrigerant?

While you can’t be certain without asking a professional HVAC technician, you can inspect your AC unit for signs of refrigerant leaks. Have you noticed that your home isn’t cooling as quickly… or at all? Have your electric bills spiked? Do you hear any strange noises coming from your unit?


If you have a refrigerant leak, you’ll want to reach out to the team at Fleetwood’s immediately. We can work with you to correct the issue before it becomes a major hazard.

Using an older system? AC motor failure may be the issue

Is your AC system more than fifteen years old? If you’re using old equipment, it could be the reason your AC is not turning on. Decreased airflow, poor temperature control, strange sounds, and increased electric bills can all be indications that your air conditioner needs to be replaced.


At Fleetwood’s Heating and Cooling, we pride ourselves on keeping our customers comfortable. Whether you’re looking for parts, on-site repairs, or a full system replacement, you can count on our team to deliver. So, if you’ve been wondering why your AC isn’t turning on, reach out to us today for help!