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How to find the right refrigerator water filter (model or part #)
Picking the wrong refrigerator water filter wastes money and can leak. Every compatible filter traces back to one of three things — your fridge model number, the part code on the old filter, or your owner's manual.
1. Start with the part number on the old filter
The fastest route is the code printed on the filter you are replacing. Look for codes such as LT1000P, DA29-00020B, EDR1RXD1, or RPWFE.
Type that code into Filter Searcher for matching listings. Dedicated pages for popular OEM parts:
- LG LT1000P · LT1000P vs LT700P
- GE RPWFE · RPWFE vs XWFE
- EveryDrop EDR1RXD1 · EveryDrop series guide
- Samsung DA29-00020B / HAF-CIN · full Samsung guide
- Browse all refrigerator filters
2. Use your refrigerator's model number
No old filter handy? Find the model number on a sticker:
- Inside the fridge, left or right wall near the top
- Behind the crisper drawers
- On the back of the unit
Examples: Whirlpool WRX735SDBM00, GE GFE28GYNFS.
3. Check the owner's manual
If the label is worn off, the manual lists the recommended filter in the maintenance section. Most brands also publish manuals online by model number.
OEM vs. compatible filters
| OEM (brand) | Compatible (aftermarket) | |
|---|---|---|
| Price | Higher | Lower |
| Fit | Guaranteed | Verify reviews |
| Certification | NSF 42/53 typical | Look for NSF marking |
Prefer filters with clear NSF certification. After install, reset the filter light.
FAQ
What if two filters look identical?
Do not swap by appearance. Codes like LT1000P and LT700P look similar but are not interchangeable.
How often should I replace the filter?
Usually every 6 months — details in how often to replace a fridge water filter.
Where should I buy once I know the part?
Compare Amazon, Walmart, Home Depot, and Lowe’s — where to buy replacement filters.
Next step: Search your model on Filter Searcher →