Best HVAC Repair in San Marcos, TX 78667 - GM Mechanical

Yes, that's a frequent issue here. A faulty reversing valve is a common culprit when your heat pump gets stuck in one mode. At GM Mechanical, our repair service includes a thorough diagnosis of the valve and electrical controls. We can often repair the valve assembly, but if replacement is needed, we'll use high-quality parts to restore your system's proper function for our local climate.

Our San Marcos-focused maintenance service proactively addresses air handler issues. We clean the blower assembly and coils to prevent airflow restrictions, check the motor and electrical connections for wear, and ensure the drain pan and line are clear to prevent leaks and humidity problems—common concerns in our area. This preventative care helps avoid costly repairs and keeps your system efficient.

For older systems with repeated issues like reversing valve failures or chronic air handler problems, replacement often becomes more cost-effective. Newer, high-efficiency systems we install are better suited to handle San Marcos's temperature swings, operate more reliably, and can significantly lower your energy bills. We'll provide a honest assessment to help you decide what's best for your home and budget.