AC Repair & HVAC Service in Houston, TX

The most common causes are a dirty air filter, a dirty outdoor coil, a frozen indoor coil, low refrigerant from a leak, or a failed capacitor or fan motor. Check that the thermostat is set to Cool and replace the filter if it is dirty. If it is still warm inside, or you see ice, turn the system off and call for diagnosis.

It varies widely with the problem. A capacitor or contactor repair is typically far less than a refrigerant leak repair or a compressor replacement. The honest answer comes after diagnosis. We explain what failed and what fixing it costs, so you can compare repair and replacement before you decide.

The usual causes are a clogged condensate drain line, a cracked drain pan, a disconnected drain line, or a frozen coil that melts and overflows. Turn the system off to stop more water forming and call for service. Leaks in attics and closets can damage ceilings and insulation quickly.

Check the thermostat and the breaker first. If those look fine, common causes are a failed capacitor or contactor, a safety switch that has shut the system down, or a control problem. These parts carry high voltage, so please do not open the unit. Call a technician.

Consider the system’s age (many last roughly 10–15 years), how often it has needed repairs, the cost of the current repair, your energy bills, and the refrigerant it uses. A moderate repair on a younger system is often worth it. A major repair on an old system often is not. We will lay out both options after diagnosis.

At least once a year is a common manufacturer recommendation, ideally before the summer cooling season. Houston systems run long and hard in humid conditions, and homes with pets, older equipment, or year-round heat pump use can benefit from more frequent checks.

Most often it is restricted airflow (a dirty filter, blocked return, dirty coil or weak blower) or low refrigerant. Turn the AC off, set the fan to On to help it thaw, replace a dirty filter, and call for service, because if the cause is not fixed it will freeze again.