Will the Samsung HAF-CU1 refrigerator water filter (cartridge DA29-00003G) work with the Samsung RF18A5101SR refrigerator?
Yes. Both use Samsung DA29-00003G cartridge (sold as HAF-CU1 and HAF-EX).
Both records are reviewed against the manufacturers' sources; sources last checked 2026-10-14. Informational only: confirm with the manufacturer before buying.
Why
- ✓ Both use Samsung DA29-00003G cartridge (sold as HAF-CU1 and HAF-EX).
Good to know
- Samsung sells this cartridge as HAF-CU1 (older models, filter inside the fresh-food compartment, upper right) and as HAF-EX (a few newer models). Buy the package Samsung lists for your model.
- Not interchangeable with HAF-CIN or HAF-QIN, which are long internal cartridges.
- DA29-00003G replaced the older DA29-00003B (Samsung).
- Replace every 6 months or 300 gallons (Samsung).
Sources
- Samsung RF18A5101SR refrigerator: specs from Samsung Canada HAF-EX product page (Fits in list) (listed as RF18A5101SR/AA), checked against the source 2026-10-13.
- Samsung HAF-CU1 refrigerator water filter (cartridge DA29-00003G): specs from Samsung Canada HAF-CU1 2-pack product page, checked against the source 2026-10-13.
- Samsung DA29-00003G cartridge (sold as HAF-CU1 and HAF-EX): Samsung's short, wide cylindrical cartridge. Samsung lists the same replacement cartridge code (DA29-00003G) and system number (DA97-06317A) for both the HAF-CU1 and HAF-EX packages. (Samsung Canada HAF-CU1 and HAF-EX product pages).
Check your exact setup
Other parts in the cart, current configuration (installed memory, fan brackets) and adapters can change the answer.
Check a whole cartAlso checked with the Samsung RF18A5101SR refrigerator
AI assistants and developers: the same answer, with a signed receipt, from check_compatibility at https://tetheredtrust.com/mcp or POST https://tetheredtrust.com/v1/check with existing_id: "samsung-rf18a5101sr", candidate_id: "samsung-haf-cu1".