The Stiebel Eltron Filter Dryer Assembly (part no. 329618) is a genuine spare part for the WPL 25 air source heat pump, designed to remove moisture and contaminants from the refrigerant circuit.

Key Details
•     Part number: 329618
•     Type: Filter dryer assembly
•     Application: Refrigerant circuit in Stiebel Eltron WPL 25 heat pumps
Function
•     Removes moisture from refrigerant
•     Filters out solid particles and impurities
•     Protects compressor and expansion valve from damage
•     Packaging: Supplied as a single assembly unit

Technical Information
•     Series: WPL (air source heat pumps)
•     Dimensions: Approx. 28 mm length × 18 mm height × 14 mm depth
•     Installation: Must be fitted by an authorised heating technician due to refrigerant handling requirements
•     Maintenance role: Ensures long-term efficiency and reliability of the heat pump system

Typical Use
•     Installed in the refrigerant line of the WPL 25 heat pump.
•     Replacement is required if the existing filter dryer becomes saturated, clogged, or damaged.
•     Helps maintain system efficiency, reliability, and compressor protection.

Notes
•     This is an original Stiebel Eltron spare part, ensuring compatibility with WPL 25 models.
•     Installation, commissioning, and servicing must be performed by qualified HVAC technicians.
•     Using non-genuine parts may affect warranty and performance.