AC Unit Is Not Turning On: Causes and Tips for Phoenix, AZ, Homeowners

ac unit is not turning on

Why does your indoor cooling decide to give up when you need it the most? If you find yourself sweating indoors with a non-responsive air conditioner, you’re not alone. This puzzling predicament is more common than you think.

As a premier AC service in Phoenix, 1st Choice Mechanical knows exactly what to do when an AC unit is not turning on. Keep reading as we help turn an otherwise frustrating experience into a simple troubleshooting mission.

 

ac unit is not turning on

 

Narrow Down the Culprit

Even if you’re not a tech-savvy Phoenix homeowner, you can still conduct several basic checks that don’t take up too much time or require special tools.

Thermostat Issues

This might seem like a no-brainer, but it’s easy to overlook. Maybe you accidentally bumped your thermostat, or you changed it to heat mode one night and forgot to switch it back.

Double-check the device and see if it’s on “cool” and the temperature is lower than the current room temperature. If that doesn’t work, try replacing the batteries.   

We also recommend getting a programmable model if you haven’t updated your thermostat recently. This small upgrade can make a big difference in preventing future issues and even help you save on energy bills.

The Air Filter Clogged With Debris

Air filters actively remove dust, mold spores, and other particulates before they reach your indoor space. They don’t just boost your air quality; they also protect your AC’s more vulnerable components.

It’s a double-edged sword, though. When neglected, debris-filled filters restrict airflow and make the system work doubly harder. It can result in unexpected shutdowns when left unchecked.

Check filters monthly and replace them every one to three months, depending on usage and the type of filter. Phoenix homes with pets or allergy-prone inhabitants will benefit more from a more frequent schedule.

A Power Problem in Phoenix

When an AC unit is not turning on, it could mean it lost its connection to the electrical supply. Is it plugged in? Someone could have tripped over the cord, or perhaps it got unplugged during cleaning.

Next, see if the circuit breaker has tripped. Reset it and see if that solves the issue. You may also have a blown fuse; it’s worth checking, but calling an expert is the safer bet when you’re comfortable handling electrical components.

Blocked Drain Line

Your AC unit doesn’t just cool the air; it also actively siphons out moisture and channels it outdoors through a drain line. This drainage system can sometimes become blocked with dirt, algae, or other debris.

The water will have no other escape route and may back up into your unit. Modern appliances often shut down to prevent further damage and alert you to the issue.

Read the manual to locate the drain line, which you can normally find near the outdoor unit. Try clearing it with a wet/dry vacuum or a thin, stiff brush.   

Seeking Expert Assistance in Phoenix, AZ

You tried a few of these troubleshooting steps, but your AC still refuses to cooperate. An air conditioner not working puts a snag on your otherwise perfect day. Why wallow in frustration for longer than necessary?

A licensed HVAC specialist in Phoenix can address a dead compressor, damaged wiring, refrigerant leaks, and other complications beyond your capabilities. They will also run diagnostics to uncover any hidden issues that might affect your unit’s performance.

Common Red Flags of a Faulty AC in Phoenix

When an AC unit is not turning on, it rarely manifests from nowhere. More often than not, malfunctioning ACs exhibit many symptoms that signify trouble ahead. Watch out for:

  • No cool air or random hot spots in your home
  • Limited airflow when you run your hands near the vents
  • Strange noises like grinding, squealing, or banging
  • Unpleasant odors emanating from the vents
  • Appliance frequently turning on and off (short-cycling)
  • Increased humidity inside your home
  • Rising energy bills without an increase in usage
  • Water pooling around your indoor or outdoor unit

The sooner you reach out for help, the better. Ignoring these signs can lead to more significant problems down the line, problems that can cost a lot more to fix.

The Go-To Cooling Specialists in Phoenix, Arizona

What do you do when your AC unit is not turning on? 1st Choice Mechanical has you covered. We take the worry out of maintaining a comfortable home with our prompt and professional work.Dial 623-323-1021 or read more of our blog to learn why you should leave the air conditioner on during the day when out.

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