External Inline Fridge Filter (Quarter-inch)

Any fridge that has a water dispenser or ice maker but no internal filter housing. In SA homes that covers most Hisense side-by-sides, nearly all Defy double doors and French Doors, many Bosch European-spec fridges, most Smeg water-dispenser models, and Samsung or LG fridges where the internal housing has been removed or damaged. Also used as a pre-filter on older Samsung RS and LG GSL fridges for extra chlorine reduction.

Physically yes. DA29-10105J is Samsung's part number, WSF-100 is the generic market number, and EF-9603 is the Electrolux-spec variant. All three are the same external inline cartridge with quarter-inch push-fit ports on each end and an identical internal element. We stock the NSF-42 certified version from all three naming conventions interchangeably, so whichever arrives in your search result is the correct part.

The cartridge is rated at 6 000 litres or 6 months, whichever comes first. In a typical Joburg household running a fridge dispenser daily with municipal water, the six-month time limit trips before the volume limit. Inline cartridges do not have an indicator light on the fridge panel, so we mark the install date on the cartridge body and schedule a calendar reminder. Chlorine breakthrough in the dispensed water is the first sign a cartridge is overdue.

For basic taste and odour the NSF-42 inline is equivalent to an NSF-42 internal cartridge. For health-related contaminants like lead and cysts (NSF-53) or pharmaceuticals (NSF-401) the inline is a step down because the smaller housing volume limits the carbon bed. If your fridge accepts an internal NSF-42+53 cartridge, use that. If it does not, an inline NSF-42 is the correct plumber-installed option.

Technically yes. In practice the connection points sit behind the fridge where the copper or plastic water feed enters the floor, often behind the toe-kick or inside a cabinet base. You need to cut the feed line cleanly, deburr both ends, insert into the quarter-inch push-fit ports, test for leaks, and reseat the fridge. That is a 20-minute plumber visit with the right tools. DIY without a push-fit disconnect tool tends to result in slow drips that ruin the skirting board.

In our install book the top five brands using inline filters are Hisense (H670, H700, RS694, RQ-56 series), Defy (DFF450, DFF451, F620), Smeg water-dispenser SBS and FQ models, Bosch European-spec side-by-sides, and any older Samsung RS or LG GSL where the internal housing was removed or damaged. If your fridge brand is not on that list, WhatsApp us the model number and we confirm whether inline is the right choice.

On the copper or plastic water feed line that runs from the wall isolator to the solenoid valve at the back of the fridge. Most kitchens have the feed entering the floor or wall behind the fridge, so we install the cartridge in-line with brackets holding it to the back of the kitchen cabinet or fridge pedestal. It stays accessible for the six-month swap without having to pull the whole fridge out each time.

Yes. Supply plus install is the default for inline cartridges because the connection points are rarely accessible without moving the fridge. We cover Sandton, Bryanston, Fourways, Randburg, Northcliff, Morningside, Rosebank, Parkhurst, Hyde Park, Linden, Cresta, Robindale and the rest of the northern suburbs. Typical visit is 20 to 30 minutes including feed shut-off, cut-in, leak test and fridge reseat. We also courier the cartridge nationally for homeowners who have their own plumber.