If a filter drier is clogged, it will feel what condition?

When a filter drier becomes clogged, it typically causes a restriction in the refrigerant flow within the system. As the refrigerant struggles to pass through the clog, it can lead to reduced pressure on the inlet side of the filter drier. This drop in pressure results in the refrigerant evaporating at a lower temperature as it attempts to move through the system, which ultimately makes the filter drier feel cooler than normal.

This cooling effect occurs because the refrigerant is unable to flow freely, limiting the amount of heat it can absorb and causing a lower temperature in the area around the clog. Understanding the operation of refrigerant systems helps to highlight why a clog affects temperature in this manner and emphasizes the importance of maintaining clean components within HVAC systems for optimal efficiency.