An AC may stop cooling while running continuously, making it one of the most common issues. The reason behind this may be dirty filters, evaporator coil issues, a refrigerant leak or a faulty blower fan, which needs to be repaired to make the AC functional again.
Most common AC problems can be fixed and repaired, depending on the main reason behind the fault. This blog will help you understand the most common AC problems and when you need repair from a qualified and certified professional.
What are the 7 Most Common AC Repairs?
A dirty filter or coil, a clogged drain pipe, a faulty compressor, a refrigerant leak, a thermostat issue or capacitor and motor issues are the most common problems that need repair to increase the efficiency of an air conditioner.
Refrigerant Leak
A refrigerant in an air conditioner is a substance that removes the heat from the air and throws the cold air into the room. A refrigerant leak can lead to warm air heating the room, or the air not being as cool as it should be.
The reason behind a refrigerant leak may be weak connections or a faulty evaporator coil. Only a trained professional can identify the leak and refill the refrigerant because it requires physically opening the system for repair.
Dirty Filters
AC filters are responsible for trapping dust and dirt and circulating the cold air throughout the room. With time, dirt particles and impurities accumulate on the filters and can block the clean airflow, leading to inefficient AC operation or even a breakdown.
Dirty or clogged filters cause an AC to work hard, which can increase the energy bills while reducing or stopping the airflow. Dirty filters are easy to clean and repair at home, and it is important to check and clean the filters periodically.
Thermostat Issues
A thermostat is a control system of the air conditioner which controls the temperature. A thermostat issue can lead to turning on and off at irregular intervals and can increase energy consumption due to inefficient temperature control.
The reason behind a thermostat issue might be weak wire connections, a dead battery or a malfunctioning sensor. A professional can diagnose the exact reason behind a faulty thermostat and can recalibrate or replace the thermostat.
Broken Fans
There are normally two fans in an air conditioner. One is the blower fan in the indoor unit, while the other is the condenser fan in the outdoor unit, which are responsible for effective airflow. Broken fans can restrict airflow and reduce cooling efficiency.
A motor failure, damaged blades and electrical issues such as capacitor failure are the main reasons behind damaged or broken fans. These can only be replaced or repaired by a professional technician using specific tools and equipment.
Compressor Issues
A compressor is the main part of an air conditioner which controls the refrigerant pressure to circulate warm air outside and cold air inside. If a compressor fails, it will not cool the air, which affects the overall functionality of the air conditioner.
Compressor failure can be caused by electrical problems, overheating and refrigerant leaks. Repairing a compressor can be expensive, or you may have to replace the whole unit. A professional technician will inspect and diagnose the compressor failure.
Drain Line Blockages
The AC generates condensation that is collected in a drain pan, with the water exiting through the drain line. When dust particles block the drain line, the water starts leaking from the indoor unit and can cause drain problems.
The reason behind a clogged drain includes dirt, algae and mould growth, due to which water backs up in the system. A clogged drain line can be solved at home with simple cleaning, or a professional technician can easily resolve the issue.
Frozen Evaporator Coil
An evaporator coil is responsible for absorbing heat from the air and cooling it down with the refrigerant. When ice builds up on the evaporator coil, it stops the absorption of heat and leads to warm air in the room.
The evaporator coil can be frozen due to low refrigerant, poor airflow and dirty filters. You can clean a frozen evaporator coil by turning off the system and letting the ice melt, or you may need professional repair or to replace the unit if it is damaged.
How to Know When Your AC Needs a Repair?
A failing air conditioner gives some indications before causing any fault. Understanding these signs can help you identify the issue before it escalates into a major problem. Some common signs may include:
- Strange noises
- Warm or weak airflow
- Moisture or leaks around the unit
- Frequent cycling
- Rising energy bills
Can I Repair an Air Conditioner Myself?
Yes, you can do some simple fixes on your own, but remember if you feel any difficulty or are uncomfortable with any of the issues, then it’s better to contact a professional rather than trying it on your own. Simple steps that you can take to identify the problem include:
- Check the dirty or clogged filters
- Check or reset the thermostat
- Check all the breakers and fuses
- Check for leaks from the unit
- Check the outdoor unit for blocked airflow
Conclusion
Air conditioning regulates room temperature and controls humidity. The most common issues may include refrigerant leaks, broken fans, frozen evaporator coils, dirty filters, thermostat failure and drain line blockage.
Noticing any leaks, strange noises, warm airflow, frequent cycling and rising energy bills will help you determine the need for a professional. If you are experiencing warm airflow but are not able to solve it even after DIY checks, then you can contact Bio Tech Heating Services for effective air conditioning services, with reliable and lasting results.