how-to-clean-shower-filter-cartridge

As an Amazon Associate we earn from qualifying purchases.

If you are looking for how to clean shower filter cartridge units, the short answer is that most makers describe the same first step: shut off the water, take the cartridge out of its housing, rinse it under clean running water, and reinstall it. Some makers also describe a reverse flush, a backwash, or cleaning the sediment guards on the ends of the cartridge. The steps are not the same for every brand, and for several of the 10 cartridges in our research list we could not open a cleaning instruction at all. This guide explains what each source says, what applies to which product, and when replacing the cartridge is the better choice than cleaning it.

Quick answer

• Turn the water off, remove the cartridge, and rinse it under clean water. This is the only cleaning step that more than one source describes.
• Aquabliss says a reduced flow after a few weeks usually means sediment has built up inside the cartridge, and describes a quick backwash for its SFC100 cartridge.
• Aquabliss describes rinsing the removable sediment guards on its SF400 and SF500 cartridges under high-pressure water.
• Aquabliss says to replace its cartridges every 3 to 6 months depending on water quality. Replace sooner if flow drops or the smell changes.
• For cartridges from other brands, the sources we opened are silent or differ, so check the manual that came with your model before you clean anything.

How we chose

This guide uses three types of material. First, the research file for this keyword, which lists 10 cartridges and kits found in a search and checked on 2026-10-23. Second, the product pages and manuals from the makers, opened directly on 2026-10-27. Third, the listing text for each product, which we use only for stated replacement intervals and product details, and labelled as the listing’s own claim. We did not rank the products. The list is here so you can see which cartridges have cleaning instructions in a source we could open and which do not.

The 10 products in the research file are the Aquabliss SFC100 Daily Revitalize cartridge (single pack and 3-pack), the Aquabliss SFC220 Daily Essential cartridge, the Aquabliss SFC500 Daily Essential+ cartridge, the Aquabliss SFC400 Daily Revitalize+ cartridge, the SR SUN RISE 20 stage cartridge four-pack, the Cobbe 20 stage cartridge, the BLOTMS cartridge for the MakeFit H5H117 head, the AquaHomeGroup 20-stage cartridge with spin propeller, and the Hibbent filter with two replacement cartridges. Only the Aquabliss products have cleaning instructions from the maker in a page we opened. Where a product is not named in a source, this guide says so.

We excluded any claim about health, skin, hair, or water softening, because none of the sources we opened makes that claim for the cartridges in this list in a way we could check. Several listings make those claims. They are not repeated here as facts.

What the sources say about cleaning

Aquabliss publishes setup and maintenance answers on its FAQ page. For the SF100 and SF220 housings, the answer on reduced flow is a quick backwash. You remove the cartridge, flip it so the other end faces up, reinstall it into the housing, run water through it for a few minutes, then reseal the filter and turn the water back on slowly while checking for leaks. The same page says reduced flow after a few weeks usually means sediment has built up inside the cartridge.

Kohler, in a manual for its own filtered showerhead, lists a cartridge maintenance step that calls for a reverse flush using high-pressure water, then reinstalling the cartridge. That manual also says to rinse the filter cartridge with water for one minute before installing a new one, and to rub the nozzles to remove debris. Kohler is not one of the 10 brands in our list, so its steps apply only to Kohler parts.

Multipure, in a manual for its own shower filter, says that when you change the cartridge you may want to clean out the sediment screen at the same time, and it gives separate instructions for that. The same manual says to clean the o-rings and the cartridge before reassembly, and to let water run through the filter for 30 to 60 seconds before use. It also says the housing body should be replaced every three years or as needed. Multipure is a different brand, so these steps do not describe any cartridge in our list.

Aquasana’s product page for its own replacement cartridge gives a life of 10,000 gallons or up to six months, and says the cartridge twists off and back on without tools. The page does not describe cleaning the cartridge. Like Multipure, Aquasana is not one of the brands in our list.

Before you start

Turn off the water at the valve or at the handle before you take the head or filter apart. Have a dry towel under the connection, because the filter can be slippery even when it is dry. Aquabliss suggests rubber gloves for the same reason. Keep the old cartridge so you can check it against the instructions that came with the model, especially the orientation of the two ends and the position of any washers or o-rings.

Check the model number on the cartridge or packaging before you follow any steps. Aquabliss says its SFC100 cartridge also fits the SF220 housing, and its SFC400 also fits the SF500 housing. It also says its SFC220 is made for that housing alone. A mismatched cartridge can leak at the connection, so do not assume a cleaning method from one model applies to another.

Step-by-step: cleaning a cartridge by rinsing

This is the method that the sources have most in common, and it is the one to try first on any cartridge.

1. Shut off the water. Close the valve feeding the shower, or turn off the supply to the handheld head, before you remove anything.
2. Remove the cartridge from the housing. Unscrew the head or housing as the manual describes. Most cartridges in this list are designed for a twist-and-lock or screw-in fit. Do not force a cartridge that will not turn.
3. Look at the cartridge. Check for visible grit, a heavy build-up on the inlet end, or loose media. A cartridge that is shedding black carbon dust is normal in a new unit, but it should be cleared before use.
4. Rinse under clean running water. Run water through the cartridge from the end that water enters, until the water runs clear. This removes loose sediment but does not clear mineral scale or media that has broken down.
5. Check the o-rings and the threads. Clean any grit off the o-rings and the threads, and reposition any o-ring that has been pushed out of its groove. Multipure’s manual asks for the o-rings and the cartridge to be clean before the housing is reassembled.
6. Reinstall the cartridge and reseal. Put the cartridge back in the housing and screw the parts together by hand. Turn the water back on slowly and check for leaks at each joint.
7. Let the water run. Multipure says to let water run through the filter for 30 to 60 seconds before use. Kohler says to rinse a new cartridge for one minute before installing it. Either timing is a reasonable pre-use flush for a cartridge you have just reinstalled.

Reverse flush and backwash: where the sources differ

Aquabliss describes a backwash for its SFC100 cartridge when flow drops. Kohler describes a reverse flush with high-pressure water for its own cartridge. Both methods push water backward through the cartridge, which is why they are used for sediment, but the sources do not give the same instructions for every cartridge and they do not say how many times to repeat the step.

Because of that, we do not recommend a reverse flush for any cartridge in our list that lacks a maker instruction for it. For the SFC100 and SFC220 cartridges, the Aquabliss FAQ is the only source that describes a backwash, and it describes it only for the reduced-flow case. For other cartridges in the list, no source we opened describes a backwash.

A soak in vinegar or any other solution is not described for any of the cartridges by the makers or by the pages we opened for this guide. Do not soak a cartridge unless the instructions that came with your model say to.

Cleaning the sediment guards

Two Aquabliss models, the Daily Revitalize+ (SFC400) and the Daily Essential+ (SFC500), use removable sediment guards at each end of the cartridge. The Aquabliss FAQ says to unscrew the end caps counterclockwise, remove the guards, and rinse them under high-pressure water while rubbing them together to release trapped sediment. The same page says some staining may remain after cleaning, and that this is normal.

The same FAQ says to rinse and reuse the guards several times, then replace them once they have run their course. It does not give a count of rinses or a time for replacing the guards. The Aquabliss listing text for the SFC400 says the guards can be rinsed two to three times before replacing, but that is the listing’s own claim and it is not repeated in the maker’s FAQ, so treat the number as unconfirmed.

The guards are the part to clean first when flow drops on these two models. If flow does not return after the guards are rinsed, the cartridge may need to be replaced.

Products on our list and what the sources say

Only the Aquabliss cartridges have a cleaning or backwash instruction from the maker in a page we opened. The table below lists what each product page or listing states about replacement, and whether any source in this guide describes cleaning for it.

Product in research file	Cleaning instruction in an opened source	Replacement interval stated
Aquabliss SFC100 Daily Revitalize cartridge (single pack)	Yes, Aquabliss FAQ: quick backwash for reduced flow	3 to 6 months (Aquabliss FAQ)
Aquabliss SFC100 (3-pack listing)	Same maker instruction applies to the SFC100 cartridge	2 to 4 months in chloramine-treated water (listing claim)
Aquabliss SFC220 Daily Essential cartridge (3-pack)	Yes, Aquabliss FAQ: run water through it after a backwash	3 to 6 months (Aquabliss FAQ)
Aquabliss SFC400 Daily Revitalize+ cartridge (3-pack)	Yes, Aquabliss FAQ: rinse the sediment guards under high-pressure water	3 to 6 months (Aquabliss FAQ); 2 to 4 months in chloramine-treated water (listing claim)
Aquabliss SFC500 Daily Essential+ cartridge (3-pack)	Yes, Aquabliss FAQ: rinse the sediment guards under high-pressure water	3 to 6 months (listing claim and Aquabliss FAQ)
SR SUN RISE 20 stage cartridges (4-pack)	None in an opened source	Two to three months (listing claim)
Cobbe 20 stage cartridge (1 pack)	None in an opened source	3 to 4 months or 10,000 gallons, whichever comes first (listing claim)
BLOTMS cartridge for MakeFit H5H117 (2 pack)	None in an opened source; the listing says to rinse briefly before first use (listing claim)	Not stated
AquaHomeGroup 20-stage cartridge with spin propeller	None in an opened source	Every 4 to 6 months, about 10,000 gallons (listing claim)
Hibbent shower head filter with two replacement cartridges	None in an opened source	Not stated

Where a row says the instruction comes from a listing, the statement is the seller’s text and has not been confirmed by the maker. Where a row says “none in an opened source,” the cartridge may still have a manual with cleaning steps. Check the packaging or the maker’s support page for it. The two links below go to the Amazon product pages for two of the Aquabliss cartridges named above.

View on Amazon (Aquabliss SFC100 Daily Revitalize cartridge)

View on Amazon (Aquabliss SFC400 Daily Revitalize+ cartridge, 3-pack)

When to replace instead of clean

Cleaning helps with sediment and with reduced flow caused by debris. It does not restore a cartridge that has used up its filter media. Aquabliss says to replace its cartridge every 3 to 6 months depending on your water quality, and to replace it sooner if you notice less water flow or a change in smell. Those two signs are the most practical guide when a calendar interval is not clear for your cartridge.

Multipure’s manual adds that a housing body should be replaced about every three years, which is a separate item from the cartridge. Aquasana’s page gives its own replacement cartridge a life of 10,000 gallons or up to six months. That figure applies to Aquasana’s cartridge only, so it is not a life for any product in our list.

A cartridge that still shows debris after two rounds of rinsing, or one that does not restore flow after the sediment guards are cleaned, is usually at the end of its useful life. Replacing it is the simpler fix. Check the model number first, because a cartridge for one housing may not seat properly in another.

Mistakes to avoid

• Working with the water on. Turn the supply off before removing the cartridge. The sources that describe removal all assume the water is off.
• Reusing a cartridge with a damaged o-ring. Multipure’s manual says to clean and reposition o-rings before reassembly. A dislodged o-ring can cause a leak at the joint.
• Mixing cartridges from different models. Aquabliss says some of its cartridges fit more than one housing and others do not. Check the model before you buy or install.
• Assuming a soak is safe. None of the makers or pages in this guide describes a soak for the cartridges in the list.

If the cartridge is not the only thing causing low flow, the showerhead itself may need attention. See our guide on how to clean a shower head with vinegar before you decide the cartridge has failed. For the rubber nozzles on a rain-style head, read how to clean a rain shower head rubber nozzles. If you are still installing the filter, our how to install a shower filter guide covers the seal and washer steps, and shower filter or whole house filter explains where a cartridge fits in a home water setup.

What we could not verify: what the sources do not say

The sources we opened do not say how many times a cartridge can be rinsed or backwashed before it must be replaced. They do not give a cleaning method for the SR SUN RISE, Cobbe, BLOTMS, AquaHomeGroup, or Hibbent cartridges. The listing text for some of these products includes statements about water quality, skin, or hair, and we did not check those statements against an independent source, so this guide does not repeat them.

The sources do not say whether a cartridge can be cleaned more than once, whether a backwash removes all scale, or whether cleaning restores the original capacity of the filter media. We also did not find a maker statement that cleaning extends the replacement interval for any product in the list.

The sources do not describe how the Aquabliss sediment guards differ between the SF400 and SF500 models beyond the FAQ wording, and they do not confirm the listing’s count of two to three rinses for the guards. Water quality in your home is also outside the sources, so the replacement intervals here are maker statements, not a prediction for your water.

Frequently asked questions

Can I clean a shower filter cartridge without taking it out of the housing?

The sources do not describe that for any cartridge in this list. The usual steps assume you remove the cartridge first. Aquabliss describes removing the cartridge, flipping it, and reinstalling it for a backwash. If the manual for your model does not say you can clean it in place, take it out before you rinse it.

How often should I clean the cartridge?

The sources do not give a cleaning schedule. Aquabliss ties cleaning to a drop in water flow and to the flow issues that appear after a few weeks of use, rather than to a fixed interval. A replacement interval is a separate question, and Aquabliss gives 3 to 6 months for its own cartridges.

Is it safe to use vinegar on a shower filter cartridge?

None of the makers or pages opened for this guide describes vinegar for these cartridges. The safe approach is to follow the maker’s instructions for your model. If no instruction exists, replace the cartridge rather than trying a soak that the maker does not describe.

Why did my water flow drop after I cleaned the cartridge?

Aquabliss says reduced flow after a few weeks of use usually means sediment has built up inside the cartridge, and that a backwash can clear it. If flow is still low after the cartridge has been rinsed or backwashed, check the sediment guards on the SF400 and SF500 models, and then consider replacing the cartridge. The sources do not say what causes flow loss in cartridges from other brands.

Do I need to flush a new cartridge before using it?

Multipure’s manual gives a 30 to 60 second run time before use. Kohler says to rinse its cartridge with water for one minute before installing it. Both are maker statements for their own products. For a cartridge from a brand not covered here, use the time in its manual, or one minute of flushing if the manual is silent.

How do I know which cartridge fits my shower head?

Check the model number on the cartridge and on the housing. Aquabliss says its SFC100 cartridge fits the SF220 housing, and its SFC400 cartridge fits the SF500 housing. Its SFC220 cartridge is made for the SF220 housing only. Other brands list their own fit. If the model is not written on the cartridge, use the one on the packaging or the manual.

Bottom line

Turn the water off, rinse the cartridge under clean water, and reinstall it carefully. For Aquabliss cartridges, a backwash applies to reduced flow, and the removable guards on the SF400 and SF500 can be rinsed under high-pressure water. For other brands, the sources we opened are silent or do not match, so use the model’s own manual. When flow stays low or the smell changes, replace the cartridge instead of trying harder to clean it.

Sources

• Aquabliss, Shower Filter FAQs, https://www.aquabliss.com/pages/faq (opened 2026-10-27). Maker FAQ covering cleaning, backwash, sediment guards, and replacement intervals for Aquabliss cartridges.
• Kohler, filtered showerhead cartridge maintenance manual, https://techcomm.kohler.com/techcomm/pdf/1579133-2.pdf (opened 2026-10-27). Maker manual for a Kohler filtered showerhead; not a brand in the research list.
• Multipure, Aquashower replacement filter instructions, https://www.multipure.com/content/mp-aqsf-instructions.pdf (opened 2026-10-27). Maker manual for a Multipure shower filter; not a brand in the research list.
• Aquasana, Shower Filter Replacement Cartridge, https://www.aquasana.com/water-filter-replacements/shower-filter-replacements/shower-replacement-cartridge-100236244.html (opened 2026-10-27). Maker product page for an Aquasana replacement cartridge; not a brand in the research list.