Wine Guardian Filter Drier 50A0009-00

The Wine Guardian Filter Drier, part 50A0009-00, is the 3/8 inch copper to copper drier Wine Guardian publishes for the D025, DP25, DS025 and SP25 cooling systems, where it sits inside the factory charged refrigerant circuit and keeps that circuit free of moisture and debris.

Wine Guardian's ducted system manual lists a filter dryer among the sealed circuit components: "the factory charged circuit includes a thermal expansion valve with an external equalizer, sight glass with moisture indicator, a filter dryer, an automatic low pressure switch, and a manual reset high pressure switch." Because the part lives in the sealed circuit, Wine Guardian's own instruction applies: "refer all servicing to qualified service personnel." As an authorized Wine Guardian dealer we supply genuine Wine Guardian parts.

Wine Guardian publishes one connection specification for this drier and one ordering instruction. Its product listing describes a "filter drier that fits 3/8 inch line," its 2026 parts list records the part as "filter drier, 3/8 CxC," and that same list marks the part for inquiry with its parts department.

Wine Guardian publishes this drier for four model designations: the D025, the DP25, the DS025 and the SP25. That is the 25 class ducted and split family, and it is the whole of the published fitment. No larger cabinet and no through-the-wall unit appears on the list.

The D025 and DP25 are the ducted pair, the DS025 and SP25 the split pair, and all four sit in the medium cellar band, 1,200 to 2,200 cubic feet. A 050, 088 or 200 cabinet is not on Wine Guardian's published list for this part number.

Read the model number from the data plate on the unit and match it against Wine Guardian's published parts list. Where the plate is unclear, Wine Guardian's own instruction on this part is to inquire with its parts department rather than to order by analogy.

The 50A prefix is worth a moment because it is unique. Every other component part number Wine Guardian publishes in its 2026 parts list is formed as two digits followed by the letter H, and this drier is the single exception.

The prefixes across that list run 19H, 31H, 32H, 36H, 39H, 53H, 54H, 71H, 73H, 74H, 91H, 93H, 94H and 99H. Across the whole Wine Guardian catalog carried here, 50A0009-00 is the only part number that does not carry the H in that position. Wine Guardian pairs it with an instruction to inquire with the parts department, a flag it applies to only a handful of parts.

Wine Guardian does not publish why this number is formed differently, so nothing about the part's origin or classification should be read into it. What the shape of the number does mean for a buyer is practical: fitment cannot be inferred by stepping to a neighboring part number the way it can inside the H series. Take the four published models as the fitment, confirm the number against the data plate, and use the parts department route Wine Guardian points to. Official specifications and manuals are collected on our Wine Guardian documentation page.

The evaporator coil 53H0068-01 is published for the same four designations plus the TTW009 and TTW018, the compressor 94H0027-00 for some ducted D025 units, and the fan motor kit 73H0043-01 for some D025 models. Each carries its own fitment, so confirm every part number separately against the data plate.