Last Updated on
Please note: This page may contain affiliate links. If you buy a product or service through such a link we earn a commission at no additional cost to you. Learn more about our product review process.
In this review, you’ll learn about the advantages and drawbacks of the Aquasana OptimH2O reverse osmosis water filter. In a nutshell, the system features a 3-stage filtration process with an additional remineralization stage – adds bits of healthy minerals to your water – to provide crystal clean and great-tasting drinking water. 5 NSF certifications guarantee the effective removal of a broad range of contaminants making the Aquasana OptimH2O RO system perfect for people who don’t want to make compromises when it comes to drinking water quality. The price? It’s fair!
Aquasana OptimH2O Under Sink Reverse Osmosis System
|Purified Water:||32 Gallons Per Day|
|System Certifications:||NSF 42, 53, 58, 401, P473|
Let’s start with the filtration process:
The full system is tested and certified to NSF/ANSI standards 42, 53, 58, and 401 and also conforms to NSF Protocol P473. Needless to say that if you are looking for a water filter to finally get rid of those nasty contaminants lurking in your water the Aquasana OptimH2O RO system is it!
Just for clarification:
Feel free to open the following tab to check out some of the reduction rates the Aquasana OptimH2O could achieve in independent lab tests.
Please note: This is only an excerpt!
NSF Standard 42
NSF Standard 53
NSF Standard 58
Chromium Hexavalent: 97.0%
Radium: 226/228 80.0%
Bisphenol A: 98.9%
NSF Protocol P473
PFOA & PFOS: 96%
All in all, the system is guaranteed to remove up to 99% of 88 different contaminants. And as far as filtration capacity is concerned, real-life daily water production is 13.32 gallons. This may not be as much as you get with other reverse osmosis filter models, but for regular household use it’s more than enough.
And lastly, at .5 gallons per minute water flow the system wastes about 4 gallons of water for every gallon filtered. This sounds like a lot but it’s actually pretty average for RO systems that don’t utilize a pressure pump.
Recommended operating pressure: 40-100 psi.
There’re a few additional features we’d like to mention.
First of all, system installation and maintenance are DIY-friendly. A user manual with detailed step-by-step instructions is part of the package, plus you can check out the helpful videos on YouTube.
Next, you can choose from 3 dedicated, full-metal faucet designs to match your kitchen decor: Chrome, brushed nickel, and oil-rubbed bronze.
And last but not least, Aquasana offers a 2-year limited warranty as well as a 90-day satisfaction guarantee on this product which got you covered in case something goes wrong.
The full package includes the first set of filters as well as all the bits and pieces that are required to set everything up.
Overall, the system is quite easy to install. All you need is some patience, and you want to make sure to follow every single step as disclosed in the user manual – especially when it comes to installing the hoses.
If you’re not sure about the next task don’t hesitate to contact Aquasana’s friendly customer service. From our experience, they are more than happy to answer all your questions and help you out as good as they can.
That said, in case you’ve never drilled a hole before and you haven’t heard of a tool called wrench, then it’s probably a better idea to have a professional do the installation for you.
Warning: The music is a bit annoying.
Aquasana’s OptimH2O reverse osmosis water filter system is definitely low in maintenance. The filters housings twist easily on and off. And we have quick-connect fittings. Both makes changing the filter elements a painless process.
Here’s how often you need to replace each component as per manufacturer specifications:
Annual cost? Approximately $180-220 depending on your water quality and usage which is more than what you pay with most of the competition. At least you can join the Water for Life replacement filter program to receive replacement filters on schedule and at a discounted rate.
The Aquasana OptimH2O system manual is available here.
We read about problems with leaking. The good news is Aquasana sends replacement parts free of charge.
What’s more, some people have had issues with the overall system quality. Although feeling durable enough, especially the dispenser that is part of the package seems rather flimsy. Switching back and forth between it and your regular kitchen faucet will make the difference even more noticeable.
A third con is the flow rate. It seems to be slower than what other RO systems provide.
5 different NSF certifications for a single water filtration system effectively removing 88+ different contaminants, that’s hard to find. And let’s not forget that the Aquasana OptimH2O also adds healthy minerals to your water for optimum hydration and natural taste.
Most customers would highly recommend the system, saying everything works exactly as advertised and that Aquasana support is fantastic.
All that plus an affordable price tag make the Aquasana OptimH2O our #1 under sink reverse osmosis system. Our verdict: 4.5 stars!
Not what you are looking for? How about the best reverse osmosis (under sink) systems?
This completes our Aquasana reverse osmosis review. If you have any questions about the OptimH2O please don’t hesitate to leave a comment below!
Sign up to join 1,000+ subscribers and get notified about new BOS guides & checklists as well as exclusive product sales and discount codes.