6 Most Common Air Conditioner Problems

Air conditioners are a great way to stay cool during the hot summer. Unfortunately, they can also be prone to problems and breakdowns. While some of these issues may be minor, others can cause more severe damage and require professional help. In this blog post, we will explore the most common air conditioner problems and how you can go about fixing them.

1. Strange Noises

There are a few different things that could be causing strange noises coming from your air conditioner. It could be that the fan is hitting something, the compressor is going bad, or loose parts are rattling around. If you hear a banging noise, the fan is likely hitting something.

Check to ensure that there’s nothing in the way of the blades. If the blades are clear and the noise persists, it could be a sign that the compressor is going out, and you’ll need to call a professional for repairs.

Loose parts inside the unit could be causing the rattling noise that you hear. This is usually not something that you can fix on your own and will require a professional to come to take a look.

air condition noise

2. Poor Airflow

One of the most common air conditioner problems is poor airflow. Several things, including a dirty air filter, closed vents, or a faulty blower motor, can cause this.

If you notice that your air conditioner isn’t blowing air as hard as it used to, be sure to check the air filter first. Or, if it’s dirty, wash the air filter or replace it with a new one.

If that doesn’t solve the problem, then look at the vents. Ensure they’re all open and not blocked by furniture or other objects.

3. Warm Air

Most people think their air conditioner cools their home by creating cool air. In reality, your AC unit pumps out warm air that has been cooled using Freon. The coils in the unit remove the heat from the air, and the blower fan circulates the cooled air through your ductwork and into your home.

If you’re not getting enough cool air, there are a few potential causes.

One possibility is that your Freon levels are low. You’ll need a professional to recharge your unit if this is the case.

Another opportunity is that your evaporator coils are dirty and need to be cleaned. Dirty coils can’t effectively remove heat from the air, so your AC unit must work harder to cool your home.

If you’re having trouble with your AC unit, it’s best to call a professional for help. They can diagnose the problem and make sure that it’s fixed properly.

common air conditioner problems

4. Water Leaks

Water leaks are one of the most common air conditioner problems. If you notice water leaking from your air conditioner, it’s essential to take action immediately.

There are a few possible causes of water leaks in air conditioners.

One possibility is that the drain line is clogged.

Another possibility is that there’s a problem with the evaporator coil. In either case, getting the problem fixed as soon as possible is essential to avoid further damage to your air conditioner.

If you’re unsure what’s causing your water leak, it’s best to call a professional for help. They can diagnose the problem and recommend the best course of action.

5. AC Won’t Turn On

If your AC doesn’t turn on, there are a few potential causes. First, turn on the power at the circuit breaker to ensure it is functioning. If the power is off, flip the switch to the “on” position.

Or, if the power is on and the AC still won’t turn on, check to see if there is a loose wire or tripped breaker in the fuse box.

If everything looks okay there, the thermostat may be set to “off.” Check the setting and make sure you switch it to “cool.” If none of these solutions work, it’s time to call a professional for help.

ac won't turn on
Photo by Letícia Almeida

6. Thermostat Issues

If your air conditioner isn’t cooling your home as it should, one issue you may be able to check yourself is the thermostat.

First, make sure that you turn it on and set it to “cool.”

Or, if it’s on and positioned correctly, the next thing to check is the batteries. If they’re dead or dying, that can cause the thermostat to malfunction.

If changing the batteries doesn’t do the trick, it’s time to call in a professional. They’ll be able to diagnose the problem and get your air conditioner working properly again in no time!


We hope this article has given you a good overview of some of the most common air conditioner problems and how to fix them. Suppose your air conditioner isn’t working correctly. In that case, it is essential to diagnose the issue as soon as possible to avoid further damage or more expensive repairs.

Aslo read: HEPA Filter Air Cleaner: Choose the Right One!

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