Customer reviews from aquasana.com
Stage 1 and 3 Replacement Filters for Aquasana OptimH2O Reverse Osmosis + Claryum 3-Stage Under Sink Water Filter System - White
Average customer rating
4.5
(123 Reviews)
Rating breakdown 123 reviews
5 Stars
90
4 Stars
17
3 Stars
6
2 Stars
2
1 Star
8
90%of customers recommend this product.
(
104 out of
115)
Customer Reviews for Stage 1 and 3 Replacement Filters for Aquasana OptimH2O Reverse Osmosis + Claryum 3-Stage Under Sink Water Filter System - White
Posted by: Apple_Pi
from Montana, USA
Verified Purchase:Yes
The under sink reverse osmosis system has been upgraded. The individual three cartridges filters no longer fit the new system. The company has lots of parts and filters available to service the old systems, but you might want to order an extra set before they're gone.
Pros: No odor, Clean taste, Long lasting filter, Nice faucet, Easy to install
Cons: Slow pour
I would recommend this to a friend!
Written by a customer while visiting aquasana.com
Posted by: Logay
from Evansville
Verified Purchase:Yes
Super quality love the brand lot of money but I think it’s worth it
Pros: Clean taste
I would recommend this to a friend!
Written by a customer while visiting aquasana.com
Posted by: Tooslow
Verified Purchase:Yes
Water flow is low and slows down almost immediately. Filters are overpriced as well. Disappointed in this product.
Cons: Slow pour
No, I would not recommend this to a friend.
Response from aquasana.comBy Aquasana Customer Support, February 13, 2026
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 pm CST, or email us at support@aquasana.com.
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 pm CST, or email us at support@aquasana.com.
Written by a customer while visiting aquasana.com