Derryberry's Air Conditioning & Heat: Experienced HVAC Services Serving Baytown, TX 77520

This is a classic sign of an evaporator coil freeze-up, a common issue in Baytown's humid climate. It's often caused by restricted airflow from a dirty filter, low refrigerant levels, or a failing blower motor. It's important to turn the system off to let the ice melt and call us. We'll diagnose the root cause—whether it's a simple fix or a refrigerant leak—and get your cooling restored safely and efficiently.

This typically points to an issue with the heat pump's reversing valve, which is responsible for switching between heating and cooling cycles. When this valve fails or gets stuck, your system can't provide heat. Our technicians are experts in heat pump diagnostics and repair. We can test the valve's operation, check the accompanying electrical controls, and perform the necessary repair or replacement to restore your home's warmth.

Regular professional maintenance is the best defense against evaporator coil freeze-ups and reversing valve issues. Our thorough tune-ups include cleaning coils to ensure proper heat exchange, checking refrigerant levels and pressures, testing all electrical components, and lubricating moving parts. This proactive care helps your system run efficiently, reduces strain on critical components, and allows us to spot small problems before they lead to a complete—and uncomfortable—system breakdown.