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How Come My AC Unit Won’t Turn On?

Your home’s AC is essential to the comfort and safety of you and your family, especially during Arizona’s long summer months. Unfortunately, many Phoenix homeowners experience problems and breakdowns with their air conditioners throughout the year. There are few troubleshooting steps you can take to try to get your AC back on track. Just remember that when the issues become more complex, it is safest to hire a professional HVAC company to properly repair your AC.

4 Common Reasons Why Your AC Won’t Turn On


Generally speaking, most air conditioning systems are designed to run for 10 to 20 years but can breakdown earlier than expected for a number of reasons. Before we address the issues associated with broken AC, one of the best ways to prevent this from happening is regular maintenance, which ensures the functionality and health of your AC system.

In some cases, your entire unit may have shut down, or it may just be a single part that is responsible. Before you begin inspecting your unit, be sure to turn off the power to your AC to ensure your safety.

The following list are some common issues occur when your AC won’t turn on.

  1. Uneven Cooling of House

    The rooms in your home are not cooled evenly. If this happens, check the vents and ducts in each room to make sure air is coming out of them.

  2. AC Switched On but Only Warm Air Comes Out

    The air conditioning unit turns on but does not emit cool air. If your AC stops and starts over and over, check your thermostat to make sure it is set to ‘Cool’ and is at the right temperatures. Then, check the outside unit for any dirt or blockages.

  3. AC Unit Turning On then Off

    The outside unit turns on and off repeatedly. This could be due to an electrical issue or dirty/clogged condenser, in which you will need a professional’s assistance.

  4. Condenser Won’t Come On

    The outside unit won’t turn on at all. This may be due to a faulty motor, absence of power, or other issues.

Causes of the Aforementioned Issues

After you have checked your thermostat, power supply, and outside unit, and still are unable to get your AC to turn on, you should probably contact a professional HVAC contractor to send out a certified technician. The following list goes over common causes of AC problems, so you know what to expect:

Call ACE Home Services for Professional A/C Repair

Whether you have a defective start capacitor, faulty compressor contactor, or burnt-out fan motor, your friends at ACE Home Services can fix any problem. So, if you ever find yourself asking ” How come my ac unit won’t turn on?” our highly trained and experienced technicians are into all things heating and cooling. With live representative standing by 24/7, you can call us at any time. We will come to you and help get your air conditioning system back in top condition. Contact ACE today by dialing (602) 428-3341 ! We’re happy to perform your annual AC tune up while we’re out!

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