You’re about to replace the water filter in your Frigidaire fridge and see two similar options: the ULTRAWF and the EPTWFU01. They look alike, but the prices differ. Many owners wonder which one is actually better and whether the extra cost is worth it.
Design Differences
The ULTRAWF and EPTWFU01 are both push-in style filters, but they are not identical.
The ULTRAWF has a larger carbon block and a more robust internal structure, which helps it handle higher water flow.
The EPTWFU01 is slightly more compact and uses a different internal design that Frigidaire introduced as a newer, streamlined version for certain models.
Both install without tools, but the ULTRAWF usually feels a bit more solid when you push it into place.
Compatibility Differences
This is where the biggest confusion happens.
- The ULTRAWF works with a wider range of Frigidaire Gallery and Professional series refrigerators (especially older and mid-range models).
- The EPTWFU01 is designed for many of the newer Frigidaire models and some specific Gallery units.
Some fridges accept both, but using the wrong one can cause poor seating, slower flow, or error messages. Always double-check your exact model number before buying.
For an easy way to confirm the right filter for your fridge, see How to Choose the Right Refrigerator Water Filter (Complete Buying Guide).
Performance Comparison
In everyday use, both filters do a good job reducing chlorine taste and odor.
The ULTRAWF tends to maintain slightly better flow rate toward the end of its life and produces clearer ice in hard water areas.
The EPTWFU01 performs very close to the ULTRAWF in taste improvement and is often praised for being quieter during dispensing.
Neither filter removes fluoride or bacteria , they focus on taste, odor, and basic contaminants. For most families, the real-world difference is small unless you have very hard water.
Which One Is Newer or Better?
The EPTWFU01 is the newer filter that Frigidaire introduced as an updated option for many current models. However, “newer” does not automatically mean better for every fridge.
- Choose the ULTRAWF if your model is listed as compatible with it and you want proven long-term performance.
- Choose the EPTWFU01 if your fridge calls for it , it is often more readily available and sometimes priced lower.
Many owners find both filters deliver similar results when replaced on schedule.
For current top-rated Frigidaire filters and how they compare across the board, check Best Refrigerator Water Filters (Top Picks 2026).
If you want a deeper look at the ULTRAWF itself, including real-user experiences and alternatives, read Frigidaire ULTRAWF Filter: Full Review, Compatibility & Alternatives.
Wrapping Up
The Frigidaire ULTRAWF and EPTWFU01 are both solid filters, but they serve slightly different model ranges and design priorities. The ULTRAWF offers a bit more robustness for older Gallery units, while the EPTWFU01 is the newer, streamlined choice for many current fridges. The best decision comes down to your exact model number and water conditions rather than price alone.
Our shop carries both the ULTRAWF and EPTWFU01 with clear compatibility guidance. Share your Frigidaire model and we’ll help you pick the right one quickly.