Walex Air conditioners and Heating Services - Houston's Trusted HVAC Services

In Houston's high humidity, a frozen evaporator coil is often caused by restricted airflow from a dirty air filter or blocked vents, or by low refrigerant levels. Both issues prevent the coil from absorbing heat properly, causing condensation to freeze. Our technicians diagnose the root cause, perform a thorough cleaning, check refrigerant charge, and ensure proper airflow to prevent future freeze-ups and restore efficient cooling.

Duct leakage forces your system to work much harder to heat or cool your home, significantly increasing energy bills, especially during our extreme summers and winters. Leaks in attics or crawl spaces also pull in hot, humid, or dusty air, reducing indoor air quality and comfort. We perform professional duct testing and sealing to close these leaks, improving efficiency, lowering costs, and ensuring conditioned air reaches every room.

We recommend bi-annual maintenance—once in spring for AC and once in fall for heating. This includes cleaning coils and drains to prevent freezing, checking refrigerant levels, inspecting and sealing duct connections, and calibrating thermostats. This proactive service catches small problems before they cause major breakdowns, keeps your system running efficiently year-round, and is the best defense against Houston's specific climate challenges.