What issue arises when using a running trap on a condensate line at the evaporator coil?

Using a running trap on a condensate line at the evaporator coil can result in improper drainage, as the running trap creates a condition where the condensate cannot flow freely out of the evaporator. Ideally, condensate should drain by gravity to ensure efficient removal of moisture from the system. If a running trap is installed, it can trap water in the line, leading to an accumulation that may back up into the evaporator coil.

This improper drainage can create several potential issues, such as increased humidity levels in the conditioned space, the risk of water damage, mold growth, or even a decrease in the system’s efficiency since the evaporator may not operate effectively with standing water present. Proper drainage is essential for optimal heat pump operation, ensuring that excess moisture is removed and allowing for better heat transfer at the evaporator coil.