Why must suction filters be sized correctly?

Suction filters are crucial components in refrigeration systems as they play a significant role in maintaining system performance. Sizing the suction filter correctly is essential to avoid excessive pressure drop in the suction line. When a filter is too small or improperly sized, it can create a significant resistance to the flow of refrigerant. This pressure drop can lead to insufficient refrigerant reaching the compressor, potentially causing it to operate inefficiently or even fail.

A correctly sized suction filter allows for adequate refrigerant flow while trapping debris and contaminants that could damage the compressor or impair system function. By ensuring that the suction line maintains appropriate pressure levels, the overall efficiency, reliability, and longevity of the refrigeration system are enhanced, allowing the compressor to function as intended without the risk of damage from foreign particles.