Why Won’t My Ac Turn On?

There are a variety of reasons why your AC won’t turn on, ranging from a faulty thermostat to a faulty compressor. If your AC isn’t turning on, the solution may be as simple as setting your thermostat to “cool”, or as complicated as replacing a major part. Either way, a faulty AC system is something you’ll want to fix right away — time to get to the bottom of the problem.

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Faulty AC Giving You the Chills?

There are many parts working together to run your AC system efficiently, so if you’re having trouble turning it on, it’s important to troubleshoot all the possible causes.

Reasons Why Your AC Won’t Turn On

The last thing you want during a summer heat wave is for your AC to stop working. The first thing you’ll want to do is check that your thermostat is both working and set to “cool.”

Besides a simple switch of your thermostat settings, there are a few common culprits to investigate. Here’s a rundown of other reasons why your AC won’t turn on:

  • Faulty thermostat

  • Tripped circuit breaker

  • Blown fuse

  • Clogged filters

  • Frozen evaporator coils

  • Dirty condenser coil

  • Refrigerant leak

  • Faulty motor

  • Faulty compressor

  • Clogged condensate trap / pump

  • Wiring issues

  • Capacitor failure

If you’re experiencing any of these problems, it’s smart to contact an HVAC technician who can help diagnose and fix the issue to restore cool air to your home as quickly as possible.

Condenser Not Turning On?

If your condenser isn’t turning on, it’s likely because of a trip in your circuit breaker. All you need to do here is reset the circuit breaker! If this doesn’t solve the issue, there may be something wrong with the thermostat or other system wiring.

AC Not Staying On?

If your AC turns on, but struggles to stay on, it’s likely short cycling –– meaning it turns off after a few minutes instead of running for a 10 to 15-minute cycle. The things that are to blame for your AC not turning on can also explain why it won’t stay on. Another reason may be that your AC unit is too large for your home, so it can’t properly filter or dehumidify the air in the same brief cycle that it takes to cool your home.

Keep Cool and Carry On

When the summer reaches peak temperatures, you don’t have to rely on an open window and a ceiling fan to stay comfortable. If you have your AC checked at the first sign of distress, you can save yourself more discomfort — and a bigger bill — down the road.

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