Whole House Post-filter Cartridge Replacement

The post-filter, considered a polishing agent, reduces any remaining sediment and organic particles. This cartridge should be replaced every 6 months.

Whole House Post-filter Cartridge Replacement is rated 4.3 out of 5 by 154.
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  • MSRP: 29.95

Questions? We can help

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This post-filter replacement cartridge can be used with Rhino Whole House Water Filters that contain a post-filter.

Easy replacements with no plumber required, this post-filter cartridge should be replaced every 6 months. Use only genuine Aquasana replacements to ensure sediment removal and system performance.

Download replacement instructions here

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Read the Reviews

Rated 5 out of 5 by from Easy Breezy We love, love LOVE our whole house Aquasana filter. It is, without a doubt the best upgrade we have done for ourselves. Clean water is SO important. We take gallons of it with us on road trips. Friends stop by and ask for a glass or a bottle to take home. It is delicious! That said, yes, the filters must be great. And they are easy to install.
Date published: 2020-10-24
Rated 5 out of 5 by from Good, Easy to Install It works well, and is easy to install in the appropriate filter container in our whole house system.
Date published: 2020-10-15
Rated 5 out of 5 by from Quality Product I’ve had the system for over a year now and find it to be very reliable filtration system. There is no real maintenance other than changing the filters when necessary. It does take some time to figure that out. I initially went with the factory recommendations for changing but quickly determined that my water was such that need more frequent changes but it’s still cheaper than salt and I saved THOUSANDS compared to a salt system.
Date published: 2020-10-04
Rated 5 out of 5 by from Excellent product I enjoy fresh and clean tasting water so I change filter regularly. Aquasana filter is easy to replace and install.
Date published: 2020-10-04
Rated 5 out of 5 by from Product arrived as promised. Easy to install. Filter system including this filter has performed very well. The rust and iron have been removed and the egg like odor of the water is gone as well.
Date published: 2018-04-29
Rated 5 out of 5 by from gets rid of all the bad stuff seems effective for getting impurities and bad taste out of water.
Date published: 2018-04-04
Rated 5 out of 5 by from Great Results! I purchased and installed the EQ-1000 filter a couple weeks ago and have enjoyed good, clean water ever since! I was able to install it myself, which was fairly time consuming, but not too difficult. After waiting a day or two to let the new water get through our pipes, we compared our new purified water to both our old unfiltered water and store bought water, and WOW what a difference! We could immediately taste the difference between the new and old water, and the new water was indistinguishable from the purified store bought water. We are extremely satisfied with the performance of this unit, and would definitely recommend it, provided the filters hold up as long as they say they should.
Date published: 2018-04-02
Rated 5 out of 5 by from Water tastes great! This post filter cartridge unit was for routine replacement. We purchased a whole house unit including the softener over a year ago. Prior to installation, our water had a slight taste and odor similar to algae and white scale built up on fixtures quickly. The units have made a world of difference. The water tastes as good as any bottled water on the market and we no longer have to buy purified water for appliances. We installed a dual system side by side and have no problems with flow rate, even when running the washing machine and showering at the same time. I highly recommend the dual unit if you have reasonably high demand. We temporarily ran with one side turned off and the the difference in water pressure while showering was noticeable - especially if water was being used elsewhere in the house. I also recommend a drip plan underneath to catch water in the event you have a leak at the fitting and during filter maintenance.
Date published: 2018-03-21
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User Q & A

Is this good for the HAHN filtration  Model: HF- 600

Asked by: Maha
Thank you for reaching out!   We would love to transfer this to a team specialist who is best-suited to answer any questions or concerns you may have.   Kindly email us directly at support@aquasana.com or contact us directly at 866-662-6885, Monday thru Friday from 8am-5pm CST, and weekends from 9am-5pm CST.   Thank you,   Aquasana Support
Answered by: Aquasana S
Date published: 2020-06-30

What are the specifics about this filter’s performance?

Asked by: Anonymous
All I know is that it lasts a lot longer than the prefilter, is more expensive, and that I change mine every 2-4 months. Mine has a transparent casing so I can see when it becomes darker with charcoal particulate. Even then it performs well, but I change it anyway.
Answered by: Sweet Grace Farm
Date published: 2020-06-18

Is this good for the eq-300?

Asked by: Wagner
Wagner, Thank you for your question. Please contact us at 866-662-6885 or email us at Support@aquasana.com and we will be happy to help look up the system you own and provide the correct filters needed. We look forward to hearing back from you. Thank you, Aquasana Support
Answered by: Aquasana S
Date published: 2020-03-05

You have a blue post filter now instead of the red & it does not work the same... my water wreaks of rotten eggs. Other people are saying the same thing about the new filter. Are you going to fix this problem? Support is not answering these questions.

Asked by: waterquestions
Same here. I had stocked up on the old style purple top post filters. Since I was stocked up I just had to purchase new ones and they are the new blue top filters. (I have 2 complete systems side by side for the additional water flow). The new filters immediately produced a raw egg smell (my wife says it smells like wet dog). It isn’t a rotten egg smell like a sulfur smell. It only smells with the hot water though. I flushed and treated my hot water thinking that was the issue to no avail. If I bypass the filtration The smell is gone. As soon as I return to the filtration the smell is back immediately. To confirm I removed the post filters from the housing and ran the system without them. No smell. So the problem is definitely the new post filters. 
Answered by: Scott g
Date published: 2020-06-10

What is the micron rating of the 10” post filter

Asked by: Air Conditioning professo
Thank you for your interest in Aquasana! Our Whole Home pre filters have a 5 micron rating. Thank you, Aquasana Support
Answered by: Aquasana S
Date published: 2020-08-23

Is the the correct post filter for the Aquasana 10 year, 1M gallons I purchased in Feb 2017?

Asked by: Twillet
Hello Twillet, Yes, this is the correct filter. Please let us know if we can further assist. Thank you, -Aquasana Support
Answered by: Aquasana S
Date published: 2019-11-30

Is it good for the EQ600? How often do we have to change this cartridge?

Asked by: Anonymous
I believe this filter works very well. We try to change ours about once every 2 to 3 months, however we have a well with lots of rust build up.
Answered by: CandyRay
Date published: 2020-05-27

Please can you confirm micron ratings for filters.

Asked by: Richard the water enthusu
Hello, This is a .35 micron post filter for the whole home filtration system. Thank you, -Aquasana Support
Answered by: Aquasana S
Date published: 2020-04-12
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