Air handler Leaks but the drain line is clear
The evaporator coil in an HVAC system is responsible for removing heat from the air that flows through it. As air passes over the cold evaporator coil, moisture in the air condenses on the coil and is collected in a drain pan below the coil. This collected condensate is then typically directed through a drain line and out of the building.
When the evaporator coil is dirty, however, it can become clogged with dust, dirt, and other debris. This can impede the flow of air through the coil and reduce its ability to effectively remove heat and moisture from the air. As a result, the coil may not cool the air as effectively, which can cause the moisture in the air to condense in other parts of the HVAC system.
One common place where condensation can occur when the evaporator coil is dirty is in the plenum, which is the central distribution box that connects the main supply and return ducts in an HVAC system. If the airflow through the evaporator coil is impeded, the moisture that would normally be collected in the drain pan and drained away may instead accumulate on the coil and eventually overflow into the plenum.
When this happens, the condensate can drip onto other components in the HVAC system, such as the furnace or air handler, which can cause damage and potentially lead to mold growth. In addition, the excess moisture in the plenum can reduce the efficiency of the HVAC system and may cause the air to feel more humid than it should.
Therefore, it is important to regularly clean and maintain the evaporator coil in an HVAC system to ensure that it is able to function properly and prevent issues like condensation in the plenum.
Schedule maintenance with one of our technicians.