Water Filter for the Samsung RS2578BB (DA29-00003G)

RS2578BB specifics — where the filter actually lives

The RS2578BB carries its water filter behind the lower fresh-food trim or base grille in most side-by-side layouts, the same estate every side-by-side refrigerator in this family uses. It is a push-lock bay — gravity is the only adversary, and a cupped hand under the bay solves it.

The small print owners learn the hard way: the change light ignores the new cartridge until you reset it, and the first removal always takes more muscle than the manual implies. The badge reads RS2578BB, but the chassis reads RS: RS is Samsung’s own coding for side-by-side machines, and in that format the water path is long enough that a neglected cartridge shows up as flow drop before it shows up as taste. The BB tail marks finish variants of one chassis; the filter bay is shared across the entire finish range.

RS vs RF — what the prefix tells you

Catalog shorthand: Ordering by prefix works because RS means side-by-side and RF means French-door multi-door in this catalog — and the cartridge pool overlaps both. capacity 25 cu ft: a mid-to-full-size cabinet whose dispenser traffic sets the realistic change cadence.

Swap it in 5 minutes

• Pull the old cartridge straight out of the header — expect a small spill, not a flood.
• Align the new cartridge with the keyed slot; it only goes in one orientation.
• Push the cartridge home until the retention latch clicks.
• Run two gallons through the dispenser to flush carbon fines, then hold the filter-reset control until the status light clears.

What this filter takes out of your water

Coverage above lists what the standard addresses, not a performance claim for any specific cartridge — removal claims vary by certificate, so check the NSF listing for the exact part number you are buying.

RS2578BB filter questions