When you own a business, maintaining the proper temperature is important for the comfort of your customers as well as your staff. So, when your HVAC system shows signs of wear, including leaks, you may find yourself concerned. Before contacting your HVAC contractor, learn what causes HVAC leaks in the guide below.

Why Is the HVAC Unit Leaking Water?

1. Drain Line Clogs

When your drain line becomes clogged, it backs up, filling the drain pan. Because it can only hold so much liquid, eventually it overflows, leading to leaks. Routine maintenance by a licensed HVAC contractor can help prevent this by blowing out the lines that typically get clogged with dirt, reducing buildup.

2. Dirty Air Filter

Air filters are the first line of defense in your HVAC system, designed to capture airborne contaminants such as dust and debris before they enter your system. When not changed regularly, air filters can become bogged down, blocking airflow to the evaporator coil.

When this happens, the evaporator coil freezes over, then eventually melts, overflowing the drain pan and creating leaks. To avoid this, check your air filter every one to three months, replacing it as needed.

3. Disconnected Drain Line

Drain lines can become disconnected when the hose loosens over time or, more commonly, when the PVC fittings aren't properly secured during the installation. When the drain line becomes disconnected, condensation can build up, leaking through the ceiling or pooling on the floor. An HVAC contractor will check your drain lines to ensure they're secure, updating the fittings and replacing loose hoses if needed.

If your HVAC system is leaking, don't wait for it to get worse. Contact the professionals at Lindbergh Commercial Services in Maryland Heights, MO, for repairs. Our team of knowledgeable HVAC contractors provides over ten years of experience in affordable and professional HVAC services designed to keep your office building, warehouse, or restaurant comfortable year-round. Call us today at (314) 731-0404 to request an appointment or visit us online to learn more about our services.