As HVAC systems run, they inevitably begin to collect dirt, dust, and other debris. This debris can clog up a filter-drier, causing the system to run less efficiently and eventually leading to complete system failure.
The most common cause of clogged filter-driers is simply dirt and dust buildup. As air circulates through the HVAC system, it can deposit dirt and dust on the filter-drier. Over time, this buildup can become significant enough to restrict airflow and cause the system to overheat.
Another common cause of clogged filter-driers is moisture. If the filter-drier isn't properly sealed, moisture can enter the system and cause the filter-drier to rust and degrade. This can also lead to build-up of dirt and dust, as well as mold and mildew growth.
If you suspect that your filter-drier is clogged, it's important to have it inspected