Whole House Post-filter Cartridge Replacement

The post-filter, considered a polishing agent, removes particulates 60 times smaller than the eye can see, including insoluble minerals and cysts. This cartridge should be replaced every 6-12 months.

Whole House Post-filter Cartridge Replacement is rated 4.4 out of 5 by 132.
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This post-filter replacement cartridge can be used with Rhino Whole House Water Filters that contain a post-filter.

The post-filter removes particulates 60 times smaller than the eye can see. This includes insoluble minerals and cysts. The addition of this post-filter is considered a polishing agent and adds a level of protection for your household in the event of an outbreak of cryptosporidium or giardia. This cartridge should be replaced every 6-12 months.

Download replacement instructions here

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Read the Reviews

Rated 5 out of 5 by from great value We've had a month and we are very pleased with it. We can now drink the water from the tap
Date published: 2018-02-16
Rated 3 out of 5 by from Disappointed in filter housing quality As I was replacing it I noticed that the threads on the post filter housing are broken. The rim is very thin there. As a result the post filter housing has developed a leak. This is just a few months after the prefilter housing cracked and I had to order a replacement. I've also noticed a cloudiness in our water lately and it hasn't improved with the replacement (pre and post) filters. Aquasana started out good, but the quality seems to be going downhill recently.
Date published: 2018-02-13
Rated 5 out of 5 by from great system I have used Aquasana products in the past and very happy.
Date published: 2018-02-12
Rated 3 out of 5 by from Love it - but... I have been a happy owner of Aquasana Whole House Water Filters for at least 7 years. Around 18 month ago I upgraded to the system capable of cleaning the water for 5 years. After that I have been a little less happy. I now have to replace the post.filter every 3 monthdue to so much black residue (probably active coal) in the post-filter. They are not cheap and it honestly does take away some of my enthusiasm about this product.
Date published: 2018-02-09
Rated 5 out of 5 by from Easy purchase The website makes it easy to purchase replacement filters and prices are reasonable.
Date published: 2017-12-29
Rated 5 out of 5 by from Regular maintenance Easy to install the new filter. Makes the pressure and flow back to normal
Date published: 2017-12-25
Rated 1 out of 5 by from Expensive and I got sick A prior reviewer is right, filters are proprietary and don't go on sale. Manufacturer suggest 6-12 months of use. After 7 months use I became nauseously ill in stomach and water tasted horrid, yet was not cloudy. When opened, the filter was slimy and black. Replacing it solved issue, but I remain with stomach sickness. Why not engineer filter holder to be transparent?
Date published: 2017-12-05
Rated 2 out of 5 by from Excessive filter cost The issue I have with the Post filter is that it is proprietary and is the only one that fits the container and is never on sale. The after installation filter cost for the post filters are prohibitive.
Date published: 2017-12-04
Rated 5 out of 5 by from Best Water Ever! I bought the whole house water system for my home and my water was delicious! Best water ever!!!
Date published: 2017-11-20
Rated 5 out of 5 by from Replacement parts First purchase since whole house filter system purchase. Quick, efficient, professional service. Received order in just a couple days. Part was what I ordered, quick replacement. Very satisfied.
Date published: 2017-11-20
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User Q & A

What is the length of this post filter

Asked by: Marc
If this is the same filter I have, the length is about 9 3/4 inches. It is designed to fit the standard Aquasana filter cylinder, which is the important thing.
Answered by: kstar
Date published: 2018-02-07

Is the whole house unit making purified water

Asked by: KATHYK
Yes ! It's great best water purifier I definitely recommend it
Answered by: JP drink-up
Date published: 2018-01-18

Is this the filter for the 4 X20 inch filter?

Asked by: carolmarie
I believe it is. There are two filter cartridges in my system; one before the big blue filter, and one after the big blue filter, this is the one that comes after the big blue. If you call Aquasana they are very helpful and will make sure you get what you need.
Answered by: Ritbey
Date published: 2018-01-09

I just replaced my Whole House Post-filter Cartridge. It has been 5 months, and it was black. Is this normal? We are a 2 person household.

Asked by: Wilk
We have been checking our post filter every 2 months and it's black.  The pre-filter is always clear.
Answered by: jwilly
Date published: 2018-01-13

Are these 0.35 Sub-Micron Post-filters? thx- stv

Asked by: foursu
Hello! This is a .35 micron post filter for the whole home filtration system. Thank you, Aquasana Customer Support
Answered by: Aquasana Customer Support
Date published: 2018-01-25

What is the gallons per minute flow rate for the 10" WHOLE HOUSE POST-FILTER CARTRIDGE REPLACEMENT

Asked by: Jeannie
I am merely a user, but Aquasana has asked me to respond to this question. I have no idea of a quantitative flow rate, but presumably Aquasana could come up with an answer. I can say that we have had Aquasana full-house filtration systems at two houses and the flow rate throughout the house seems to be limited primarily by what the water utility provides, not by the filters all the water goes through (until the filters get so clogged they need to be replaced).
Answered by: kstar
Date published: 2017-12-09

Whole house filter: searching for replacement cartridge for Aqua Flo Model: P-PC-20-20BV, Number 36157, Filter size: 4.5" X 20", Micron: 20.0, 20.0 gpm, Pressure range 30-60 PSI, to reduce sediment. To fit standard 20" BV Housing

Asked by: Truns
This questioner seems to be looking for a 20-inch filter (probably a pre-filter or stand-alone), whereas the filter I recently bought and am being asked to comment on is a 10-inch post-filter. A 10-inch filter is definitely NOT appropriate for a 20-inch housing.
Answered by: kstar
Date published: 2017-11-09

What are these filters made of? What is in the filter that makes it clean the water?

Asked by: Sylvia
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