HVAC Services San Antonio TX | Call Unzelman Bill Appliance & Air Conditioning Repair

Uneven cooling in large homes is often due to an undersized AC unit, ductwork issues, or poor airflow balancing. Our technicians perform a comprehensive system evaluation to identify the root cause, whether it's duct sealing, adding zoning dampers, or recommending a properly sized unit, to ensure consistent comfort in every room.

In San Antonio's climate, a faulty reversing valve may cause your heat pump to blow cool air in heating mode or fail to switch between modes entirely. We diagnose the valve and related components. Repairs typically involve clearing debris or replacing the valve to restore your system's essential heating and cooling functions.

Our diagnostic service is tailored to local problems. We check refrigerant levels, inspect ductwork for leaks affecting airflow, test the reversing valve and electrical components, and assess overall system balance. This detailed inspection allows us to pinpoint issues like those causing uneven cooling and provide an accurate, transparent repair plan.