PartAnswers

EPTWFU01 filter: genuine vs replacement

Last checked October 28, 2026

Either, if you pick a matching tier

The genuine Frigidaire EPTWFU01 is listed to NSF/ANSI 42, 53 and 401 at the exact model level (IAPMO).

We found 9 replacement models listed by number: 3 cover the same standards, and 3 are listed to NSF/ANSI 42 only, which covers taste and chlorine, not lead.

Verdict: either is fine if you pick a matching tier, such as AQUA CREST AQF-EPTWFU01-D, Maxblue MB-EPTWFU01-D and Waterdrop WDP-EPTWFU01. Skip the basic tiers if you want lead reduction.

Sources: public listings read October 28, 2026, linked below. How we check.

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Your options, by listed certification

Genuine Frigidaire EPTWFU01
NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401
Rated capacity 125 gal · Lists lead reduction · IAPMO R&T listing (more files: 2 3 4) (read October 28, 2026)
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Top tier AQUA CREST AQF-EPTWFU01-D
NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401
Rated capacity 200 gal · Lists lead reduction · NSF listing (read October 28, 2026)
Check on Amazon
Top tier Maxblue MB-EPTWFU01-D
NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401
Rated capacity 200 gal · Lists lead reduction · NSF listing (read October 28, 2026)
Check on Amazon
Top tier Waterdrop WDP-EPTWFU01
NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401
Rated capacity 200 gal · Lists lead reduction · NSF listing (read October 28, 2026)
Check on Amazon
Mid tier AQUA CREST AQF-EPTWFU01-P
NSF/ANSI 42NSF/ANSI 53No NSF/ANSI 401
Rated capacity 200 gal · Lists lead reduction · NSF listing (read October 28, 2026)
Check on Amazon
Mid tier Maxblue MB-EPTWFU01-P
NSF/ANSI 42NSF/ANSI 53No NSF/ANSI 401
Rated capacity 200 gal · Lists lead reduction · NSF listing (read October 28, 2026)
Check on Amazon
Mid tier Waterdrop WDS-EPTWFU01
NSF/ANSI 42NSF/ANSI 53No NSF/ANSI 401
Rated capacity 200 gal · Lists lead reduction · NSF listing (read October 28, 2026)
Check on Amazon
Basic tier AQUA CREST AQF-EPTWFU01
NSF/ANSI 42No NSF/ANSI 53No NSF/ANSI 401
Rated capacity 200 gal · No lead reduction claim listed · NSF listing (read October 28, 2026)
Check on Amazon
Basic tier Maxblue MB-EPTWFU01
NSF/ANSI 42No NSF/ANSI 53No NSF/ANSI 401
Rated capacity 200 gal · No lead reduction claim listed · NSF listing (read October 28, 2026)
Check on Amazon
Basic tier Waterdrop WD-EPTWFU01
NSF/ANSI 42No NSF/ANSI 53No NSF/ANSI 401
Rated capacity 200 gal · No lead reduction claim listed · NSF listing (read October 28, 2026)
Check on Amazon

IAPMO R&T lists the genuine filter by its trade name, PureSource Ultra II, and names EPTWFU01 as the replacement component on each certificate.

Fit note: each replacement above carries the EPTWFU01 number in its own model name, so its seller presents it as a replacement for EPTWFU01. We did not confirm fit with the replacement makers; confirm with your manual.

Side by side

FilterNSF/ANSI 4253401Lead claimRatedListing
Genuine Frigidaire
EPTWFU01		YesYesYesYes125 galIAPMO R&T listing (more files: 2 3 4)
AQUA CREST
AQF-EPTWFU01-D		YesYesYesYes200 galNSF listing
Maxblue
MB-EPTWFU01-D		YesYesYesYes200 galNSF listing
Waterdrop
WDP-EPTWFU01		YesYesYesYes200 galNSF listing
AQUA CREST
AQF-EPTWFU01-P		YesYesNoYes200 galNSF listing
Maxblue
MB-EPTWFU01-P		YesYesNoYes200 galNSF listing
Waterdrop
WDS-EPTWFU01		YesYesNoYes200 galNSF listing
AQUA CREST
AQF-EPTWFU01		YesNoNoNo200 galNSF listing
Maxblue
MB-EPTWFU01		YesNoNoNo200 galNSF listing
Waterdrop
WD-EPTWFU01		YesNoNoNo200 galNSF listing

What the tiers mean for EPTWFU01

Most replacement brands sell the same filter shape in up to three versions with almost the same name. For EPTWFU01 we found 3 basic, 3 mid and 3 top tier models.

  • Basic tier, NSF/ANSI 42 only: listed for aesthetic claims such as chlorine, taste and odor. No health claims such as lead.
  • Mid tier, adds NSF/ANSI 53: health effect claims. Check the listing for the exact contaminants; for these models it includes lead where marked above.
  • Top tier, adds NSF/ANSI 401: a set of emerging compounds such as some medicines and pesticides, each named in the listing.

The model numbers differ by a letter or a suffix, so read the exact number on the box before you buy. NSF 42 vs 53 vs 401 explained.

Which refrigerators use the EPTWFU01

56 model entries as listed by Frigidaire (maker page, read October 28, 2026). Linked models have their own page.

Genuine EPTWFU01 specs from the maker

Maker's rated capacity125 gallons
Maker's change interval3 to 6 months
Maker's own claim“Up to 99% reduction of contaminants*”
SourceFrigidaire product page, read October 28, 2026

Questions

Is a cheap replacement EPTWFU01 filter as good as genuine?

It depends on the exact model. Of the 9 replacements we found, 3 are listed to NSF/ANSI 42 only. Top tier models such as AQUA CREST AQF-EPTWFU01-D, Maxblue MB-EPTWFU01-D and 1 more are listed to 42, 53 and 401. The genuine filter is listed to NSF/ANSI 42, 53 and 401.

Does the EPTWFU01 filter remove lead?

The genuine filter's NSF/ANSI 53 listing includes lead reduction. Among replacements, 6 of 9 list lead reduction.

Where do these certification facts come from?

From the public NSF, IAPMO R&T and WQA listings, searched by the exact model number, with the read date shown. A second, separate lookup confirmed each row before publishing. We never call a filter certified unless the listing names that exact model.

Sources

  1. IAPMO listing for Frigidaire EPTWFU01: https://myplc.iapmo.org/certificate#/19012 (read October 28, 2026, second check October 28, 2026)
  2. NSF listing for AQUA CREST AQF-EPTWFU01-D: https://info.nsf.org/Certified/DWTU/Listings.asp?TradeName=AQF-EPTWFU01-D&submit3=Search (read October 28, 2026, second check October 28, 2026)
  3. NSF listing for Maxblue MB-EPTWFU01-D: https://info.nsf.org/Certified/DWTU/Listings.asp?TradeName=MB-EPTWFU01-D&submit3=Search (read October 28, 2026, second check October 28, 2026)
  4. NSF listing for Waterdrop WDP-EPTWFU01: https://info.nsf.org/Certified/DWTU/Listings.asp?TradeName=WDP-EPTWFU01&submit3=Search (read October 28, 2026, second check October 28, 2026)
  5. NSF listing for AQUA CREST AQF-EPTWFU01-P: https://info.nsf.org/Certified/DWTU/Listings.asp?TradeName=AQF-EPTWFU01-P&submit3=Search (read October 28, 2026, second check October 28, 2026)
  6. NSF listing for Maxblue MB-EPTWFU01-P: https://info.nsf.org/Certified/DWTU/Listings.asp?TradeName=MB-EPTWFU01-P&submit3=Search (read October 28, 2026, second check October 28, 2026)
  7. NSF listing for Waterdrop WDS-EPTWFU01: https://info.nsf.org/Certified/DWTU/Listings.asp?TradeName=WDS-EPTWFU01&submit3=Search (read October 28, 2026, second check October 28, 2026)
  8. NSF listing for AQUA CREST AQF-EPTWFU01: https://info.nsf.org/Certified/DWTU/Listings.asp?TradeName=AQF-EPTWFU01&submit3=Search (read October 28, 2026, second check October 28, 2026)
  9. NSF listing for Maxblue MB-EPTWFU01: https://info.nsf.org/Certified/DWTU/Listings.asp?TradeName=MB-EPTWFU01&submit3=Search (read October 28, 2026, second check October 28, 2026)
  10. NSF listing for Waterdrop WD-EPTWFU01: https://info.nsf.org/Certified/DWTU/Listings.asp?TradeName=WD-EPTWFU01&submit3=Search (read October 28, 2026, second check October 28, 2026)
  11. NSF search for EPTWFU01, no listing found: https://info.nsf.org/Certified/DWTU/Listings.asp?TradeName=EPTWFU01&submit3=Search (read October 28, 2026)
  12. WQA search for EPTWFU01, no listing found: https://find.wqa.org/find-products (read October 28, 2026)
  13. Frigidaire product page: https://www.frigidaire.com/en/p/accessories/refrigerator-accessories/refrigerator-accessories-and-consumables/water-filters/EPTWFU01 (read October 28, 2026)

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