7 Most Common AC Repair Problems

Essential AC Repair Issues for South Texas Homeowners

The comfort of homes in South Texas depends, in a large part, on the central air conditioner system. The cooling and dehumidifying that an air conditioner accomplishes make a home more comfortable and healthier, a place of respite from the heat and humidity of summer. Since the system is complex, it is necessary to depend on a qualified technician. It is also helpful to be aware of the most common repairs needed for air conditioning systems.

1. Clogged air filters. A filter is placed in the ductwork, near the evaporator chamber at the base of the cabinet. This filter collects dust, dander, mold spores, bacteria, and large viruses. After a few months, the collection is sufficient to prevent airflow and inhibit cooling. It is necessary to change the air filter frequently, at least every three months.
2. Thermostat care. While portions of the air conditioner system require high voltage, the thermostat runs on battery power. Batteries, of course, need to be changed occasionally; changing batteries annually is recommended.
3. A dirty condenser unit. The outdoor portion of the air conditioner is called the condenser. The central fan draws a tremendous amount of air through the sides of the unit, consisting of a network of tubes and fins. The tubes contain hot refrigerant gas which needs to be cooled, hence the air moving through them. When dirt, dust, and lawn debris coat the outside of the network, cooling is inhibited. A dirty condenser can lead to catastrophic failure, so it needs to be clean annually.
4. A dirty evaporator coil. Inside the air conditioner cabinet is the opposite end of the refrigerant tube network. Here, the refrigerant is cooler than the inside air, collecting heat and humidity from the air from inside. Whenever contaminants—dust, dander, etc.—come into contact with the wet coils, they adhere to the evaporator coils. This inhibits the transfer of heat from the home to the evaporator coil. This needs to be cleaned away as well, annual cleaning is recommended.
5. Electrical stress. The air conditioner system is controlled by a complex network of sensors, switches, and control mechanisms, called capacitors. These electrical components wear and stress over time, and this might cause the parts to buzz loudly. Knowing how to test and replace these parts requires specialized equipment and training.
6. Leaking Freon. The refrigerant gas, Freon, is kept under pressure at all times, so even a pinhole in the tubing will result in the gas leaking from the network. Repairing this problem requires locating/repairing the hole and replacing the leaked refrigerant. The loss of refrigerant will result in a loss of cooling capacity and can lead to the (Freon) compressor motor overheating. Replacing the compressor is a very expensive repair; replacement might be a better financial decision.
7. Compressor failure. Age, refrigerant loss, and a dirt condenser can result in the compressor motor overheating. As stated above, this is a very expensive repair.

Making timely AC repair to your HVAC system is a necessary care step for responsible homeowners. Be sure to establish a relationship with a trusted HVAC technician to ensure repairs are made in a timely manner.

Don’t Get Summer AC Woes: Call Mullinix AC Repair for all of your AC Repair Needs

South Texas homeowners rely on their AC systems for comfort and health, but complex systems often face issues like clogged filters, dirty coils, or Freon leaks. While some basic maintenance can be done, many problems require specialized knowledge and equipment. For timely, expert AC repair and to ensure your system operates safely and efficiently, it’s essential to establish a relationship with a trusted HVAC technician like Mullinix AC Repair.

For more information about R.M. Mullinix and our College Station AC repair services, schedule an appointment or visit our AC repair and maintenance information page.