Summit Air Conditioning & Heating | Best HVAC Services in San Antonio, TX

It could be either. Often, a sudden loss of cooling is due to a repairable issue like a refrigerant leak, a frozen evaporator coil, or a failed capacitor—all common in our extreme heat. Our technicians will diagnose the problem thoroughly. If your system is old, inefficient, and requires frequent repairs, a replacement with a modern, more reliable unit may be the most cost-effective solution for long-term comfort and lower energy bills.

A frozen coil is often caused by restricted airflow (from a dirty filter or blocked vents) or low refrigerant levels. Both are common issues that strain systems in our climate. Continuing to run it can cause serious damage. Summit's repair service starts by safely thawing the coil and then pinpointing the root cause. We'll clean the system, check for leaks, recharge refrigerant if needed, and ensure everything is operating correctly to prevent it from happening again.

For our long, hot summers, proper sizing and efficiency (SEER rating) are critical. An oversized unit will short-cycle, and an undersized one will struggle. Summit's installation experts perform a detailed load calculation for your home to recommend the right size. We typically advise on units with higher SEER ratings for maximum energy savings and emphasize robust components that can handle sustained operation. A proper installation by our team ensures your new system delivers reliable, efficient cooling for years.