Mundo HVAC | Trusted HVAC Repair in McAllen, TX

This common issue, often called uneven cooling, is frequently caused by an imbalanced air duct system or an undersized AC unit struggling with our intense South Texas heat. At Mundo HVAC, we perform a detailed airflow analysis to identify restrictions or leaks in your ductwork. We then balance the system to ensure cool air is distributed evenly throughout all levels of your home, solving those stubborn hot spots and improving overall efficiency.

An evaporator coil freeze-up, which you're describing, is a serious sign that your system needs attention. The most common causes in our McAllen climate are dirty air filters blocking airflow, low refrigerant levels, or a failing blower fan. Continuing to run the unit can cause major damage. We'll safely thaw the system, diagnose the root cause—whether it's a leak, a clog, or a mechanical issue—and perform the precise repair needed to restore full cooling power and prevent future freeze-ups.

Given our long, hot, and humid seasons, proactive maintenance is key. We recommend a professional tune-up twice a year—before summer and winter. Our service includes cleaning coils and checking refrigerant levels to prevent freeze-ups, inspecting and tightening electrical connections, calibrating your thermostat, and ensuring your ductwork is sealed and balanced to combat uneven cooling. This preventative care helps your system run more efficiently, lowers energy bills, and catches small issues before they become expensive, uncomfortable breakdowns.