The Trane DHY01608 Biflow Filter Drier is a refrigeration system component designed to remove moisture, dirt, and contaminants from refrigerant in HVAC systems. Its bidirectional design allows refrigerant to flow through the filter in either direction, providing effective filtration during both heating and cooling operation. Commonly used in compatible Trane heat pump systems, this fi... https://www.partshnc.com/dhy01608-trane-12-inch-biflow-filter-drier