The Top Causes of AC Unit Failure and How to Prevent Them

Learn about the most common causes of AC unit failure and how to prevent them from an expert in the field of air conditioning.

The Top Causes of AC Unit Failure and How to Prevent Them

As an expert in the field of air conditioning, I have seen countless cases of AC unit failure. And while there are many different reasons why an AC unit may stop working, there are two components that are most commonly responsible for these issues: the compressor and the fan motor. These two parts work together to keep your home cool and comfortable, but when they fail, it can lead to a lot of frustration and discomfort. One of the most common reasons for AC unit failure is a clogged or dirty air filter. This may seem like a small issue, but it can have a big impact on the performance of your AC unit.

It's important to follow the manufacturer's recommendations for how often you should change your air filter. Some need to be replaced monthly, while others can last up to three months. There are also reusable filters that should be cleaned when they become dirty. A simple way to determine if your filter needs to be cleaned is to hold it up to a light.

If no light passes through, it's time for a cleaning. Not only do dirty filters reduce airflow, but they can also cause the air conditioning unit to freeze. This is because the restricted airflow causes the evaporator coils to become too cold and freeze over. This not only affects the performance of your AC unit, but it can also lead to costly repairs. Another easy solution to common AC unit problems is to check your thermostat. Make sure it is turned on, clean, level, and not affected by sunlight.

It's also important to ensure that it is set to the correct temperature and settings. If problems persist after checking these things, there may be another underlying issue. The drain line is another component that can cause problems if it becomes clogged with dirt, dust, and lint. If this happens, the drain pan will fill up and water will leak out, potentially causing damage to your AC unit or anything else around it. It's important to have a trained technician examine your AC unit annually to prevent these types of issues. The thermostat is one of the most important parts of an AC unit.

It measures the temperature in your home and instructs the machine to turn on when it needs to cool down and turn off when it reaches the desired temperature. If the thermostat is not functioning properly, it can give incorrect instructions to the AC unit, causing it to run when it shouldn't or not run when it should. The evaporator coils are responsible for absorbing heat from the air and returning cool air to your home through a series of air ducts. These coils can become dirty over time and should be cleaned at least once a year. However, if they become too dirty, a professional HVAC technician may need to use a chemical cleaner to get them back in working order. In addition to the compressor and fan motor, there are other important components in an AC unit that can cause problems if they fail.

These include contactors for the compressor, fan motor, and condenser fan motor. If any of these parts fail, it can lead to issues with your AC unit's performance. It's important for homeowners to be aware of these potential issues and have their AC units regularly maintained by a professional. This can help prevent costly repairs and ensure that your AC unit is running efficiently. One thing that many people may not realize is that even when you're not actively using your AC unit, it is still consuming energy. This is because the fans are constantly running.

While the compressor may get some rest when you turn off your AC unit, the fans are still using energy. This is why it's important to keep all components of your AC unit clean and well-maintained to prevent any unnecessary energy consumption. The compressor is another important part of an AC unit that can fail if not properly maintained. Dirty coils can cause the compressor to operate at a higher temperature, which can lead to failure and the need for a replacement. This is why it's important to have your AC unit regularly serviced by a professional. As you can see, an AC unit is a complex machine made up of many different parts that all work together to keep your home cool and comfortable.

If one part fails, it can have a domino effect on the rest of the system. That's why regular maintenance and prompt repairs are crucial for keeping your AC unit running smoothly. In addition to regular maintenance, it's also important for homeowners to be aware of any changes in their AC unit's performance. If you notice any strange noises, leaks, or other issues, it's best to have a professional take a look right away. Ignoring these warning signs can lead to more serious problems down the road.