How to Troubleshoot Your AC: Tips to Try Before Calling for Repair

October 3, 2023

When your air conditioning system malfunctions, it can be tempting to immediately call for repair. However, before you spend money on a professional, there are several steps you can take to troubleshoot and potentially fix the issue yourself. By following these tips, you may be able to save yourself time and money while ensuring your home stays cool and comfortable.

One of the most common causes of AC problems is a dirty or clogged air filter. This can restrict airflow and cause your system to work harder than necessary, leading to a decrease in efficiency and potentially costly repairs. Checking and replacing your air filter regularly can prevent these issues and keep your AC running smoothly. Additionally, checking your thermostat settings and ensuring it is not set to "heat" or "off" can also solve many common AC problems.

If these simple troubleshooting steps do not resolve the issue, it may be time to call in a professional. However, by taking the time to troubleshoot your AC before calling for repair, you can potentially save money and prevent future issues from arising.

Understanding Your AC System

Components of an AC System

Before troubleshooting your AC system, it's important to understand its components. An AC system consists of four main parts: the compressor, the condenser, the expansion valve, and the evaporator.

The compressor is responsible for compressing the refrigerant gas, which increases its temperature and pressure. The condenser then removes the heat from the refrigerant, causing it to condense into a liquid. The expansion valve reduces the pressure of the refrigerant, which causes it to evaporate and absorb heat from the surrounding air. Finally, the evaporator releases the cool air into your home.

How an AC System Works

An AC system works by removing heat and humidity from the air inside your home and releasing it outside. The refrigerant gas is used to transfer heat from inside your home to outside. This process is repeated until the desired temperature is achieved.

The AC system is controlled by a thermostat, which senses the temperature inside your home and adjusts the AC accordingly. When the temperature inside your home rises above the set temperature, the thermostat signals the AC system to turn on. Once the desired temperature is reached, the AC system turns off.

If your AC system is not working properly, it could be due to a variety of reasons, such as a dirty filter, a malfunctioning thermostat, or a refrigerant leak. By understanding the components and workings of your AC system, you can better troubleshoot and diagnose any issues that may arise.

Common AC Problems

When your AC unit is not working correctly, it can be frustrating and uncomfortable. However, before calling for repair, it's essential to identify common AC problems and troubleshoot them. Here are some of the most common AC problems and how to fix them.

AC Not Cooling

If your AC unit is running, but it's not cooling your home, there may be a few issues to consider. First, check the thermostat settings. Ensure the thermostat is set to "cool" and the temperature is lower than the current room temperature. If the thermostat settings are correct, check the air filter. A dirty air filter can restrict airflow and reduce the cooling efficiency. Replace the filter if it looks dirty or clogged. If the air filter is not the issue, check the outdoor unit. Ensure it's clean and free of debris. If none of these troubleshooting steps work, it may be time to call for repair.

AC Making Strange Noises

If your AC unit is making strange noises, it may be a sign of a problem. If you hear a rattling noise, it may be due to loose parts or debris in the unit. If you hear a grinding noise, it may be a sign of a motor problem. If you hear a hissing noise, it may be due to a refrigerant leak. If you hear any of these noises, turn off the AC unit and call for repair.

AC Not Turning On

If your AC unit is not turning on, there may be a few issues to consider. First, check the thermostat settings. Ensure the thermostat is set to "cool" and the temperature is lower than the current room temperature. If the thermostat settings are correct, check the circuit breaker. Ensure it's in the "on" position. If the circuit breaker is not the issue, check the air filter. A dirty air filter can restrict airflow and reduce the cooling efficiency. Replace the filter if it looks dirty or clogged. If none of these troubleshooting steps work, it may be time to call for repair.

Remember, regular maintenance of your AC unit can help prevent these common problems. Change the air filter regularly, clean the outdoor unit, and schedule professional maintenance at least once a year.

Basic Troubleshooting Steps

Before calling for professional repair, there are a few basic troubleshooting steps that homeowners can take to diagnose and potentially fix common AC problems. The following sub-sections outline some of these steps.

Checking the Thermostat

One of the first things to check when experiencing AC issues is the thermostat. Ensure that it is set to the desired temperature and mode (cooling, heating, or fan-only). If the thermostat screen is blank or not responding, try replacing the batteries. If the thermostat is not the issue, move on to the next step.

Inspecting the Circuit Breaker

Another common culprit of AC problems is a tripped circuit breaker. Check the electrical panel to see if the breaker for the AC unit has tripped. If it has, turn it off and then back on. If the breaker continues to trip, it may be a sign of a more serious electrical issue and professional assistance should be sought.

Examining the Air Filter

A dirty air filter can cause reduced airflow and strain on the AC system. Check the air filter and replace it if it appears dirty or clogged. This is a simple and inexpensive fix that can often solve AC issues.

Assessing the Outdoor Unit

The outdoor unit of the AC system should also be inspected for any visible damage or debris buildup. Clear away any leaves, branches, or other debris that may be obstructing the unit. Additionally, check the refrigerant lines for any signs of damage or leaks. If any damage is found, professional assistance should be sought.

By following these basic troubleshooting steps, homeowners may be able to diagnose and fix common AC problems without the need for professional repair. However, if these steps do not solve the issue, it is important to seek professional assistance to avoid further damage to the system.

When to Call a Professional

There are times when it is best to leave AC troubleshooting to a professional. Here are some instances when it is necessary to call a professional HVAC technician:

Persistent Issues

If you have tried all the basic troubleshooting steps and your AC unit still does not work properly, it is time to call a professional. The technician will be able to diagnose the issue and provide a solution. If you have already tried to fix the problem yourself, it is important to let the technician know what you have done so far.

Major Component Failures

If your AC unit has a major component failure, such as a compressor or fan motor, it is best to call a professional. These types of repairs require specialized tools and knowledge that most homeowners do not have. Attempting to fix these issues yourself can lead to further damage to the unit and potentially cause harm to yourself.

Electrical Problems

If you suspect that your AC unit has an electrical problem, it is best to call a professional. Electrical issues can be dangerous and should only be handled by a licensed technician. Signs of electrical problems include tripped breakers, burnt wires, or strange noises coming from the unit.

In general, if you are unsure of the problem or do not feel comfortable attempting to fix it yourself, it is best to call a professional. HVAC technicians have the knowledge and experience to diagnose and fix AC issues quickly and safely.

Conclusion

In conclusion, troubleshooting an AC before calling for repairs can save homeowners time and money. By following the tips provided in this article, homeowners can identify and fix simple issues with their AC units.

It is important to remember that some issues may require the expertise of a professional. Homeowners should not attempt to fix complex issues that require specialized equipment or knowledge. Instead, they should contact a qualified HVAC technician to diagnose and repair the problem.

Regular maintenance of AC units can also prevent issues from occurring in the first place. Homeowners should clean or replace filters regularly, keep the outdoor unit free of debris, and have their units inspected annually by a professional.

By following these tips, homeowners can keep their AC units running smoothly and avoid costly repairs.

Live in Northeast Ohio? Get an Estimate
If you're having problems with your HVAC system we'd love to help, Schedule an Appointment or Get Estimate to talk to an HVAC professional today
Schedule Service Today!