Common reasons a central air conditioner blows warm air in Conroe, Texas homes, what you can safely check yourself, and when to call for AC repair.
Start With the Simple Things
Before assuming the worst, check that the thermostat is set to cool and the set temperature is below the current room temperature. Batteries in some thermostats can die and cause odd behavior.
Next, look at the breaker panel. The outdoor condenser usually has its own breaker, and a tripped one will leave the indoor blower running while the outdoor unit sits idle, which produces exactly the warm air symptom.
A Dirty Filter Can Freeze the Coil
A clogged air filter starves the indoor coil of airflow. The coil gets too cold, ice forms, and cooling drops off. Replace the filter, turn the system off, and let any ice melt before running it again.
Electrical Parts Wear Out in the Heat
Capacitors and contactors in the outdoor unit work hard through long Texas summers. When a capacitor weakens, the compressor or fan may struggle to start. These parts should be tested and replaced by a technician because they store electrical charge.
Low Refrigerant Means a Leak
Air conditioners do not use up refrigerant. If the charge is low, there is a leak somewhere. Simply adding refrigerant without finding the leak is a temporary fix. A proper repair locates the source first.
Need professional help? Learn about our air conditioning repair service or return to the blog.