Licensed HVAC Repair in San Antonio, TX 78218 - CAHS

In San Antonio, a common cause of air handler issues is a clogged condensate drain line. This drain line removes moisture from your AC system and is part of your home's plumbing. During our plumbing inspection, we check this critical line for clogs or leaks. Clearing a blocked drain prevents water damage to your air handler and stops the system from shutting down, which is a frequent local problem we resolve.

Thermostat wiring problems in our area are often due to older wiring that has become brittle or was incorrectly installed. Our technicians are experts in diagnosing these electrical issues at the source. We trace the wiring from your thermostat to your HVAC unit during our service call, ensuring secure connections and identifying any faults that cause your system to short-cycle or not turn on, providing a lasting fix.

Before you call, check a few simple things. First, ensure your thermostat has power and is set correctly. Next, check your air filter—a dirty one can mimic air handler problems. Finally, listen for unusual noises from the indoor unit and check if the condensate drain line (usually a PVC pipe) is dripping. If these basics check out but you're still having issues, it's time to call CAHS for a professional diagnosis of the underlying wiring or mechanical fault.