Frigidaire EPTWFU01 PureSource Ultra II Filter Replacement Guide

Confirm both the name and number

PureSource Ultra II is the family name and EPTWFU01 is the exact part number. Neither “PureSource” nor “Ultra” alone is specific enough. Frigidaire also sells ULTRAWF under the PureSource Ultra name, and the missing Roman numeral changes the product decision.

Find the appliance identity through the Frigidaire model-number guide, then use the Frigidaire filter selector. The refrigerator model and its Use & Care Guide establish fit. The old cartridge is a cross-check, not a substitute for those sources.

Frigidaire’s current EPTWFU01 listing states a 0.65-gallon-per-minute flow rate. The official two-pack page lists 125 gallons of rated capacity and a three-to-six-month recommended change frequency. HomeMemory’s verified exact-product Amazon ASIN is B01BKWSHHE.

If the official model result says ULTRAWF, leave this path and use the PureSource Ultra guide. Do not force Ultra II into an Ultra receiver to see whether it “almost fits.”

Decide whether replacement is the right action

Routine timing, a filter-status prompt, declining flow, or water-quality changes may lead to replacement. Frigidaire’s general owner guidance says water filters should usually be changed every six months. Its product information may state three to six months. Heavy use and local conditions can bring attention sooner.

If the refrigerator has been unused during a move, Frigidaire recommends changing the filter before reinstalling it. If the actual symptom is a leak, broken receiver, or no household water supply, correct diagnosis comes before installing another cartridge.

Write down what triggered the change. That note helps later: restored flow after installation supports a loaded old cartridge, while unchanged poor flow points toward a broader supply or appliance issue.

Prepare for a no-tool installation

Frigidaire describes EPTWFU01 replacement as simple and requiring no tools. That does not mean every refrigerator exposes the compartment identically. Read the exact model manual for the filter location, bin removal, cartridge release, and control-panel procedure.

Place a towel below the housing for residual drops and a pitcher at the dispenser. Remove food that could be contaminated by a spill. Wash and dry your hands, then keep the new connection protected until the old cartridge is out.

Do not bring pliers, screwdrivers, sealant, tape, or lubricant into the filter compartment. A cartridge that needs those products is not following the owner procedure. If the housing is already wet, pause and identify the source.

Remove EPTWFU01 while protecting the receiver

Support the old filter and use the release action shown in the refrigerator manual. Keep the movement square with the housing. A small amount of trapped water can escape, but the flow should not continue.

If the cartridge resists, reread the exact sequence. Reducing pressure on a latch or aligning the body may matter. Repeated pulling, twisting beyond the documented motion, or leveraging surrounding plastic can damage a component that remains part of the refrigerator.

After removal, compare the old EPTWFU01 label with the new package. Inspect the accessible receiver for debris, cracked plastic, or remnants of a damaged cartridge. Do not reach deeply or move seals. A broken part should be documented for qualified service.

Install the replacement and establish a dry baseline

Open the new filter only after the comparison is complete. Remove the specified cap or wrapping and keep the connection clean. Align EPTWFU01 as the manual shows, insert it through the proper travel, and complete the lock or retention action.

The filter should remain secured without being held. If it sits crooked, stops early, or comes back out, remove it and verify identity and orientation. Check for shipping damage. Never alter tabs or shave plastic to imitate fit.

Reinstall the bin or cover and dry the compartment thoroughly. Take a quick photograph of the installed position if it will help the next household member. A dry baseline makes leak checking reliable.

Prime and purge after the water path was opened

Installing a cartridge introduces air. Frigidaire says trapped air can cause uneven dispenser flow, two or three empty ice-maker cycles, and first ice that is discolored or has an odd flavor. Use a stable pitcher and hold it against the dispenser paddle until water arrives; the official support guide says this can take one to two minutes.

Continue dispensing for several minutes and discard the water. Repeat, and discard three to five tall glasses for a newly installed filter. This is distinct from Frigidaire’s instruction to discard at least one gallon after installation of an entirely new refrigerator.

Inspect EPTWFU01’s housing between rounds. Air that diminishes is one thing; moisture that reforms is another. Stop for a leak instead of attempting to solve it with more flushing.

Allow the ice maker to replace startup ice. Do not judge the new cartridge from the first cube or first unpurged glass.

Verify performance instead of assuming success

Look for three outcomes: the cartridge remains secured, the receiver stays dry, and water becomes stable. Check immediately after purging and later the same day. Record flow quality compared with the before-change note.

No water immediately after replacement can reflect incomplete seating, air, a closed supply, a kinked line, or wrong compatibility. Very slow water that existed with both cartridges warrants investigation beyond the filter. A leak requires stopping use and inspecting the family, cartridge condition, seating, and receiver.

Do not cycle through several filters as a substitute for diagnosis. A damaged housing will not be repaired by a newer cartridge, and an external supply problem will follow every filter installed.

Use the correct bypass only when documented

Frigidaire offers a specific bypass for the PureSource Ultra II EPTWFU01 system for homes using whole-house filtration. The existence of a family-specific bypass reinforces that blank cartridges are not universal.

Use a bypass only when the refrigerator manual and Frigidaire documentation allow it. It can help isolate a restriction in a controlled diagnosis, but it does not establish drinking-water treatment, repair a leak, or make a different filter compatible.

Save the bypass part record separately so it cannot be mistaken for a spent filter at the next reminder.

Finish the maintenance record

Keep the completed change attached to the Frigidaire refrigerator hub so future cooling, dispenser, and ice symptoms retain the correct appliance and filter context.

Follow the model-specific control procedure to reset the filter status after installation and purging. Button labels vary, so do not borrow a reset sequence from a different refrigerator merely because both use EPTWFU01.

Save EPTWFU01, PureSource Ultra II, ASIN B01BKWSHHE, purchase source, installation date, purge completion, and leak-check result in HomeMemory. Schedule the next notice from the installation date. Add an earlier shopping reminder to allow time for another official compatibility check.

If buying a two-pack, leave the spare sealed in a dry, clean storage location. Reconfirm the appliance model before using it after a refrigerator replacement.

Final Verdict

An EPTWFU01 change succeeds when “Ultra II” is verified before the package opens. Protect the receiver with the documented no-tool motion, seat the clean cartridge, purge trapped air, and use a dry housing as evidence. Finish by recording the exact family and installation date, not merely clearing the filter light.