How often should a filter drier be changed?
every 2 years
All filter driers should be replaced every 2 years or by manufacturer’s recommendation. The Receiver Drier’s function in an automotive a/c system is to filter foreign material, remove moisture from refrigerant and to act as a reservoir to supply liquid refrigerant to the TX valve.
What is a common symptom of a severely restricted filter drier?
A starved evaporator from the liquid line (filter drier) restriction will cause high superheats. High compression ratios from the low evaporator pressure will cause high heat of compression, thus high discharge temperatures. This is assuming there’s still some mass flow rate of refrigerant through the system.
What happens if filter drier is clogged?
If the filter drier is partially clogged, there may be a few degree temp drop across it. However, if the filter drier is completely clogged, there will be a large temperature drop across it and likely frost due to the low temp of the refrigerant exiting the clogged filter drier.
How much does a filter drier cost?
The price for replacing your AC refrigerant filter drier is roughly the same, ranging between $700 to $900.
Is a filter drier necessary?
A Filter Drier is an important part of an air conditioning system. A Filter Drier is so important that manufacturers normally supply one to install with a new home comfort system.
What causes clogged filter drier?
What Causes a Filter-Drier to Clog? One reason filter-driers can clog is due to age. As the desiccant inside the filter-drier absorbs water, it will become saturated and swell. If it swells too large, then it will begin to constrict the flow of the refrigerant running through the filter-drier.
What is the reason for filter-drier sweating in refrigerator?
However, as these fine particles accumulate over time, they can create enough pressure drop to cause the liquid refrigerant passing through to flash to a vapor. This can cause a local cold spot on the filter drier and even cause condensation (sweating) to occur on the outer surface of the filter drier’s body.
What causes clogged filter-drier?
