The Most Common Causes of AC Repair Calls in Summer

When the summer heat hits, your air conditioner becomes more than a convenience—it’s a necessity. Unfortunately, that’s also the time of year when many homeowners find themselves calling for AC repair. High demand, continuous operation, and the wear and tear of previous seasons all put stress on cooling systems. Knowing the most common causes of AC breakdowns can help you recognize early warning signs and prevent major repairs before your system quits on the hottest day of the year.
1. Low Refrigerant Levels
Refrigerant is the lifeblood of your air conditioning system, allowing it to absorb heat and cool your home. If your AC has a refrigerant leak, you might notice warmer air, longer cooling cycles, or ice forming on the coils. Since refrigerant isn’t consumed like fuel, low levels typically point to a leak—something that requires prompt AC repair to prevent further damage.
2. Dirty or Clogged Air Filters
An air filter’s job is to keep dust, dirt, and debris from entering the system. When it’s clogged, airflow is restricted, forcing the AC to work harder. This not only reduces efficiency but can also lead to overheating and system failure. In many cases, a simple filter replacement can prevent an unnecessary AC repair call.
3. Frozen Evaporator Coils
If airflow is restricted or refrigerant levels are low, the evaporator coils can get too cold, causing them to freeze over. Once frozen, the system can’t effectively absorb heat, which means no cool air is coming into your home. Frozen coils often require both thawing and addressing the underlying issue—two steps a professional AC repair technician can handle safely.
4. Electrical Issues
From faulty wiring to worn-out capacitors, electrical problems are a frequent cause of AC malfunctions. These issues can prevent the system from starting, cause intermittent cooling, or even lead to complete shutdown. Electrical repairs should always be handled by trained professionals to ensure safety and proper diagnosis.
5. Blocked Condenser Units
The outdoor condenser unit plays a vital role in releasing heat from your home. When leaves, dirt, or other debris build up around it, the system can overheat and lose efficiency. In severe cases, the strain can lead to costly AC repair needs. Keeping the area around the unit clear is a simple way to prevent this.
6. Lack of Preventive Maintenance
One of the most common reasons for emergency AC repair is simply neglect. Regular maintenance—like coil cleaning, refrigerant checks, and electrical inspections—can catch problems early and keep your system running smoothly through the summer.
Bottom line: AC repair calls often spike in the summer because small issues go unnoticed until the system is under maximum strain. By recognizing these common problems and scheduling routine maintenance, you can reduce the risk of breakdowns, extend the life of your AC, and enjoy uninterrupted comfort all season long.