Identifying Common AC Repair Issues in San Bernardino Homes


A well-functioning air conditioning system is essential for maintaining a comfortable and enjoyable living environment in San Bernardino homes. However, like any home appliance, AC systems can experience issues that require prompt attention to avoid further complications and potential damage. 

As a homeowner, recognizing common AC repair issues and understanding when to seek the assistance of 4 Points A/C and Heating’s skilled professionals can make a significant difference in maintaining your air conditioning system’s efficiency, performance, and longevity.

Explore several common AC repair issues that homeowners in San Bernardino may encounter, including their causes, symptoms, and possible solutions. Timely detection and intervention by expert technicians are crucial in resolving these problems and preventing further damage to your air conditioning system.

Common AC Repair Issues in San Bernardino Homes

To maintain a comfortable living environment throughout the year, it’s essential to become acquainted with the most common AC repair issues that homeowners in San Bernardino may face. Understanding these issues can help you identify when it’s time to call in our professionals. The following are some of the most frequently encountered repair issues:

Refrigerant Leaks

Refrigerant is the vital substance that helps your air conditioning system cool your home. When refrigerant levels are low due to leaks, your system won’t be able to cool your home effectively, causing it to work harder and consume more energy. Some signs that may indicate your system has a refrigerant leak include:

  1. A decline in cooling performance
  2. An unusually high electrical bill
  3. Ice formation on the evaporator coil

If you suspect that your air conditioner has a refrigerant leak, it is crucial to contact our experts to diagnose and repair the issue. Unaddressed refrigerant leaks can lead to more severe complications, such as damage to the compressor or even a complete system breakdown.

Malfunctioning Thermostat

The thermostat is the control center of your air conditioning system and regulates the temperature and maintains optimal comfort in your home. If your thermostat is malfunctioning, it may not correctly read the home’s temperature, causing the AC to run longer or shorter than necessary, resulting in an uncomfortable living environment. Signs of a malfunctioning thermostat may include:

  1. Inconsistent temperature settings
  2. Unresponsive controls
  3. The thermostat display is not functioning or showing inaccurate readings

Consulting with our professional technicians can help you diagnose whether the issue is with the thermostat or another component of your AC system.

Clogged Filters and Dirty Coils

For your air conditioning system to function correctly, it requires clean and unrestricted airflow. Over time, air filters and coils can become clogged or dirty, reducing the system’s overall efficiency and performance. Some signs of clogged filters or dirty coils include:

  1. An increase in energy consumption and utility bills
  2. Reduced airflow from your AC vents
  3. A persistent musty odor coming from your air conditioning system

To prevent these issues, it’s essential to regularly clean or replace your air filters and schedule routine maintenance with our expert team to ensure your system’s coils are clean and functioning optimally.

Electrical Problems

Electrical issues can be a significant cause of AC repair problems. Faulty wiring, circuit breakers, and failing capacitors can lead to system malfunctions and, in some cases, pose a danger to your home. Some signs of electrical issues in your air conditioning system include:

  1. Tripping circuit breakers or blown fuses
  2. Unusual noises or smells coming from your AC unit
  3. The system not turning on or frequently shutting off

Addressing electrical issues with your air conditioning system should always be left to our experienced technicians. They have the skills and expertise to safely diagnose and repair any electrical problems, protecting both your AC system and your home.


Recognizing common AC repair issues in your San Bernardino home is paramount in taking timely action to resolve these problems and maintain your air conditioning system’s performance, efficiency, and longevity. Our expert technicians are here to provide prompt, reliable, and comprehensive repair services, ensuring that your home remains comfortable and enjoyable year-round.

At 4 Points A/C and Heating, our knowledgeable and dedicated team of HVAC technicians is committed to delivering prompt and reliable AC repair services for San Bernardino homeowners. With our expertise, we can effectively diagnose and treat various AC repair issues, ensuring your system continues to function optimally and provide you with the comfort and efficiency you deserve. Don’t let AC repair issues impact the comfort of your home. Contact our professionals today to schedule expert diagnostic and repair services that you can trust!