Customer reviews from aquasana.com
Stage 2 Replacement Filter for the Aquasana OptimH2O Reverse Osmosis + Claryum 3-Stage Under Sink Water Filter System - White
Average customer rating
4.2 out of 5
4.2
(32 Reviews)
Open Ratings Snapshot
Rating breakdown 32 reviews
5 Stars
21
4 Stars
4
3 Stars
2
2 Stars
3
1 Star
2
86%of customers recommend this product. 
(
25 out of 29
)
Best Buy Privacy Policy
Customer Reviews for Stage 2 Replacement Filter for the Aquasana OptimH2O Reverse Osmosis + Claryum 3-Stage Under Sink Water Filter System - White
Customer Rating
5 out of 5
5
Good product
on April 14, 2025
Posted by: Beach
from Avalon
Verified Purchase:Yes
Improved taste Doesn’t use too much cabinet space. Easy to restock filters
Pros: Clean taste
I would recommend this to a friend!
Written by a customer while visiting aquasana.com
Customer Rating
2 out of 5
2
Leaky system
on April 3, 2024
Posted by: Disappointed and Slightly
from WI
Verified Purchase:Yes
We have had this system for a few years now and have had at least 4 rather major leaks. 2 happened after changing the filters. The mineral cartridge is extremely difficult to get a secure fit and it doesn't start to leak right away. This last time, it leaked some time after 30 minutes from it being changed (we checked it 30 minutes after changing and it wasn't leaking but we woke up to a flooded cabinet and a collapsing ceiling in the basement. Really nice.). The 2 other times, it just randomly starts to leak at the faucet and we have to "burp" the system by holding our finger over the hole that is behind the faucet lever and wait until we hear the system make a gurgle sound. If you like water damage and having mold issues, this system is great as it provide ample opportunities for leaking. The tast of the filtered water is fine. It feels "soft" when drinking so at least that much is ok with it.
Pros: Clean taste
Cons: Difficult to install
No, I would not recommend this to a friend.
Response from aquasana.comBy Customer SupportAquasana Customer SupportJune 20, 2024
Thank you for bringing this to our attention. It’s important to us that our customers are more than satisfied and we would like the opportunity to resolve this issue immediately.

If you’re open to discussing your experience further, please message us, and we will work to provide a resolution soon. You may also contact us directly at 866-662-6885 Option 1, Monday through Friday from 8 am-5:30 pm CST, or email us at support@aquasana.com.
Written by a customer while visiting aquasana.com
Customer Rating
4 out of 5
4
Very easy to replace and it works perfectly.
on March 30, 2024
Posted by: Jdleffler
from Phoenix, OR
Verified Purchase:Yes
I had a problem with a broken o-ring. It was necessary to replace the entire unit as, apparently, Aquasana doesn’t have any access to that replacement part for customers. I suppose that’s why the instructions say to be very careful when replacing filters so the o-ring doesn’t become damaged.
Pros: Clean taste, Good Water Flow, Nice faucet, Easy to install
Cons: Slow pour
I would recommend this to a friend!
Written by a customer while visiting aquasana.com
Customer Rating
4 out of 5
4
Good product
on January 24, 2024
Posted by: MG ...............
from Houston, TX
Verified Purchase:Yes
No issues. XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
I would recommend this to a friend!
Written by a customer while visiting aquasana.com
Customer Rating
5 out of 5
5
Support knew right away why filter wasn't working
on August 29, 2023
Posted by: Cissy
from Valley Center
Verified Purchase:Yes
I would like to thank all of the staff that helped me fix the reverse osmosis. Very efficient.
I would recommend this to a friend!
Written by a customer while visiting aquasana.com
Customer Rating
1 out of 5
1
Changing this filter is extremely difficult!
on August 20, 2023
Posted by: Not happy in FL
from Florida
The product page reads, “ Expertly engineered for easy replacement. No need to disconnect hoses or water lines – simply twist off and replace.” What???!!! There are hoses/water lines to disconnect, that is for sure. But the worst part is trying to connect the replacement filter into the housing. It is so difficult in fact, that I will have to pay a plumber next time to change it. Hey, an instructional video would have been really helpful! Get a clue, Aquasana.
Pros: Clean taste
Cons: Difficult to install
No, I would not recommend this to a friend.
Written by a customer while visiting aquasana.com
Customer Rating
1 out of 5
1
It was missing the "drain port elbow".
on March 12, 2023
Posted by: aBob
Missing "drain port elbow". It leaks without that.
No, I would not recommend this to a friend.
Response from aquasana.comBy Aquasana Customer SupportAquasana Customer SupportMarch 18, 2023
Hi Bob,
The Membrane replacement does not come with the drain port elbow. This piece must be kept with the system when replacing the filter. If you are in need of another elbow, please contact us directly at 866-662-6885, option1. Our phones are open Monday through Friday from 8am to 5pm CST.
-Aquasana Customer Support
Written by a customer while visiting aquasana.com
Customer Rating
5 out of 5
5
Good product
on September 19, 2022
Posted by: You guess
from NV
Verified Purchase:Yes
The installation is easy. The only way the product could be improved is to have a shut off valve for the tank.
Pros: No odor, Clean taste, Durable, Nice faucet, Easy to install
I would recommend this to a friend!
Written by a customer while visiting aquasana.com
Showing 1-8 of 32 results 
1 2 3 4 >>