Running a problematic air conditioner can be frustrating, especially during the hot summer. Air conditioners are designed to keep your home cool and comfortable, but when they malfunction, they can increase your energy bills and lead to expensive repairs. Here, we’ll discuss the five most common air conditioner problems and how to troubleshoot them

1. Dirty Air Filter

One of the most common air conditioner problems is a dirty air filter. When the air filter is dirty, it restricts the airflow, making your AC work harder than it needs to, and reducing its efficiency. A dirty air filter can also lead to frozen evaporator coils, which prevent your AC from cooling your home effectively.

The solution to this problem is simple: replace the air filter regularly. It’s recommended to change your air filter every one to three months, depending on usage. If you have pets, live in a dusty area, or have someone with allergies or asthma in your home, you should change your air filter more frequently.

2. Refrigerant Leaks

Refrigerant leaks are another common air conditioner problem. Refrigerant is the substance that cools the air in your AC unit. When there’s a leak, the refrigerant level drops, making your AC less effective at cooling your home. If left unaddressed, refrigerant leaks can cause your AC to break completely.

Call an HVAC technician to inspect your unit if you suspect a refrigerant leak. They will be able to identify the source of the leak and repair it. It’s important not to try to repair refrigerant leaks, as refrigerant is a hazardous substance requiring special handling and disposal.

3. Frozen Evaporator Coils

Frozen evaporator coils are a common problem that can be caused by a dirty air filter, low refrigerant levels, or a malfunctioning blower fan. When the evaporator coils freeze, the AC unit cannot cool your home effectively.

To fix this problem, turn off your AC unit and let the evaporator coils thaw. Once they’re thawed, check the air filter and replace it if necessary. If the problem persists, you may need to call an HVAC technician to diagnose and repair the issue.

4. Malfunctioning Thermostat

A malfunctioning thermostat can cause your AC to turn on and off at random intervals or prevent it from turning on. This can be caused by various issues, including dead batteries, faulty wiring, or a malfunctioning sensor.

To troubleshoot a malfunctioning thermostat, start by checking the batteries. If the batteries are dead, replace them and see if that resolves the issue.

If the batteries are fine, check the wiring to make sure everything is connected properly. If neither of these solutions works, you may need to replace the thermostat altogether.

5. Clogged Condensate Drain

The condensate drain is responsible for removing the moisture that’s produced when your AC cools the air. Over time, the condensate drain can become clogged with dirt, debris, or algae, preventing it from draining properly. This can cause water to build up in the drain pan, which can lead to water damage in your home.

To fix a clogged condensate drain, start by turning off your AC unit. Next, locate the drain line and remove any visible clogs. If the clog is difficult to remove or the drain line is not easily accessible, you may need to call an HVAC technician to clean the drain.

Final Thoughts

Air conditioner problems can be frustrating, but they’re also common. By understanding the five most common air conditioner problems and how to troubleshoot them, you can keep your AC unit running smoothly and avoid expensive repairs.

Replace your air filter regularly, address refrigerant leaks promptly, and call a professional for help with any issues you can’t fix. With some maintenance and care, your air conditioner can keep your home cool and comfortable for years.

If you need reliable air conditioning service in Lethbridge, look no further than 4 Seasons Home Comfort. Our expert technicians have the knowledge and experience to keep your AC unit running smoothly all summer. Contact us today to schedule an appointment.