What Causes Condensation in My HVAC System?

HVAC condensation can be a common issue, but understanding the causes can help you prevent it. Moisture can form in your ducts, air handler, and other components, leading to potential problems if not addressed.

One of the primary causes of HVAC condensation is the difference in temperature between the air inside your home and the air outside. When warm, humid air comes into contact with the cold surfaces of your HVAC system, it can cause water droplets to form.

Another common cause is a clogged or improperly installed drain line. The HVAC drain line is responsible for removing the condensation that forms on the evaporator coil. If this line is blocked or not correctly installed, it can lead to excess moisture buildup.

Additionally, dirty air filters can restrict airflow, causing the evaporator coil to freeze and then thaw, leading to excessive AC condensation. Regular maintenance and filter replacement are crucial to preventing this issue.

It’s also important to ensure your HVAC system is properly sized for your home. An oversized or undersized unit can lead to inefficient operation and increased HVAC unit condensation.

If you notice condensation dripping from your air handler or condensation on ductwork, it’s essential to address the issue promptly. Ignoring it can lead to mold growth, water damage, and decreased system efficiency.