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Internet #302890868

Model #THD-RO-3.62

OptimH2O Reverse Osmosis Claryum Under-Counter Water Filtration System with Oil-Rubbed Bronze Faucet

  • Provides optimal drinking water to quench your thirst
  • Removes harmful contaminants for purer drinking water
  • Maintains the benefits of healthy minerals
  • See More Details

Frequently Bought Together


Product Overview

Filter Type
Fitting Size
Top Contaminants Filtered
Number of Filters
Aquasana OptimH2O delivers the best drinking water available for optimal hydration. OptimH2O is the first reverse osmosis system of its kind to pair powerful reverse osmosis filtration with Claryum selective filtration PLUS re-mineralization. Remove the most contaminants from your water while maintaining the benefits of healthy minerals other reverse osmosis systems simply remove.
  • Only buy certified drinking systems the Aquasana AQ-RO-3 is NSF certified to standards 42, 53, 58, 401 and P473
  • Guaranteed to reduce up to 99% of 77 contaminants including lead, fluoride, arsenic, chlorine, heavy metals, bacteria, viruses
  • Only RO system on the market that combines the best of three technologies: reverse osmosis, advanced cellarium carbon and re-mineralization
  • Instant access to healthy water - powers through a half-gallon every minute and 35 Gal. per day
  • With NSF full system certification, the parts and connectors are solid - will not leach contaminants back into your water
  • Drink healthier water and use for better tasting beverages and enjoy better tasting food - even your pet can now benefit with chemical-free water
  • Simple to install, low maintenance - carbon housings easily twist off making replacing your filters a snap
  • Includes first set of professional grade filters and all parts needed for installment
  • Faucets are all metal, 100% lead-free in 3-color options

Info & Guides

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BrandISPRINGAquasanaAPEC Water SystemsAquasana
Name6-Stage Under Sink Reverse Osmosis Drinking Water Filter System with Alkaline Remineralization, NSF CertifiedOptimH2O Reverse Osmosis Claryum Under-Counter Water Filtration System with Oil-Rubbed Bronze FaucetEssence Premium Quality 75 GPD pH+ Alkaline Mineral Under-Sink Reverse Osmosis Drinking Water Filter SystemOptimH2O Reverse Osmosis Claryum Under-Counter Water Filtration System with Chrome Finish Faucet
Contaminants FilteredLead, Chlorine, Copper, Fluoride, IronLead, Chlorine, Bacteria, Copper, Fluoride, IronLead, Chlorine, Bacteria, Copper, Fluoride, IronLead, Chlorine, Copper, Fluoride
House Hold Size3-4 people3-4 people3-4 people3-4 people
IncludesFaucet,Filter,Installation kitFaucet,Hardware,Installation kitFaucet,Installation kitFaucet,Hardware,Installation kit
Filtration MethodActivated Carbon,Alkaline or Calcite,CTO,GAC,Hollow Fiber Membrane,SedimentCarbon BlockAlkaline or Calcite,Carbon Block,Coconut Shell Carbon,SedimentCarbon Block
Number of Stages6 Stage3 Stage6 Stage3 Stage
FeaturesAutomatic shutoffNo additional featuresAutomatic shutoffFilter change indicator
Product Type Filter System Filter System
View ProductView ProductView ProductView Product



Fitting size (in.)
Product Depth (in.)
Product Height (in.)
Product Width (in.)


Application Type
Water Treatment
Bacteria Reduction (%)
Chlorine reduction (%)
Oil-Rubbed Bronze
Contaminants Filtered
Lead, Chlorine, Bacteria, Copper, Fluoride, Iron
Copper Reduction (%)
Ease of Install
Drilling Required
No additional features
Filtration Method
Carbon Block
Fitting style
Quick connect
Fluoride Reduction (%)
House Hold Size
3-4 people
Faucet,Hardware,Installation kit
Iron Reduction (%)
Lead reduction (%)
Maximum feed water pressure (psi)
Maximum feed water temperature (F)
Maximum filtered water flow (gallons per min.)
Minimum feed water pressure (psi)
Minimum feed water temperature (F)
Number of filters included
Number of Stages
3 Stage
Pack Size
Product Type
Filter System
Product Weight (lb.)
Replacement Filter Type
Under Sink Replacement Filters
Water Filtration System Type
Reverse Osmosis

Warranty / Certifications

Certifications and Listings
ANSI Certified,NSF Certified
Manufacturer Warranty
2 Year Limited

Questions & Answers


What is the total vertical space required for installation, with room to change the filters?

Asked by Annx April 11, 2021

I don't own the home anymore, but it was under the kitchen sink. It was a little tight when we changed the filters. My water was questionable at this house and this system worked very well.

How long is the poly tubing that's included with the faucet system?

Asked by JTP2 March 18, 2021

There are two. They are roughly 2 and 3 feet.

Do you have to use the provided faucet? 

Asked by KimVH March 3, 2021

No, but the faucet you use has to match the connector to the filter. FYI: We have recommended the filter to several friends and family members and all have chosen to use the faucet that comes with the filter.

Can the tank be set on it's side during operation or does it have to be upright to work properly?...

Asked by TBone February 24, 2021

Tank is hermetic so in theory you can. It does have a membrane compressed air in the low side, water in the high side, the water flows in both directions depending on the pressure.

How can I install this system for water dispenser on countertop and to the ice maker line to refrigerator?

Asked by Deb In Florida February 12, 2021

You can go to your local hardware store and get another fitting just like the one Aquasana sent you with your install kit. Install that fitting right on top of the fitting you installed from Aquasana then hook up the service line to your counter top dispenser. Now you have a place for the water line that feeds your filters and the water line that feeds your refrigerator. I hope I made this clear. Glad to help.

How can I get filter replacement for AQ-RO3

Asked by Duds February 2, 2021

You should be able to order them from the website or have them put on Auto-Ship.

I have the Aquasana app, but the percentage of the filter life isn't showing. My Bluetooth is on. Any suggestions? I changed the battery around, thinking the installer had it in wrong. Which way does the battery go?

Asked by Sonata January 23, 2021

Good luck with the bluetooth. I never got it to work. Now as for the filter, I love it and am on the automatic replacement program.

I recently just replaced my filters for the first time in my 3 stage filter system. Very easy to do but now my water pressure from my faucet is very weak. Any ideas? Thanks.

Asked by Billy6698 January 19, 2021

There is a flow restriction valve in each of the canister heads. Why? Because you can unscrew the canister w/o a leak.  You need at least 40 psi of pressure for the water to pass. Sometimes the valves fail. I had to punch out my first filters valve to get it to flow. Now it flows great. But the canister will shoot out water if disconnected. I have to make sure the water is off and the pressure relieved before removing canisters now.  I recommend putting in a particulate filter before the Aquasana filters so the valves don’t get plugged/damaged.

I purchased my unit at Home Depot. Can I still signup for your filter purchase program ?

Asked by Ceros Roman nose January 12, 2021

Anyone can sign up for the filter program.

What micron are the filters

Asked by Donna D January 7, 2021

Hello, Thank you for reaching out to us. The 3-Stage system includes a 20-micron pre-filter before the two Aquasana Claryum® filters. This pre-filter increases the capacity of the system from 500 gallons to 600 gallons. In addition, it improves the flow rate in high sediment areas. If you have any further questions feel free to contact us at 866-662-6885. Thank you, Aquasana Customer Support

OptimH2O Reverse Osmosis Claryum Under-Counter Water Filtration System with Oil-Rubbed Bronze Faucet - page 2

Customer Reviews

  • 4.5
    out of 1,155 reviews
  • 91% recommend this product
Filter by:
Showing 1-10 of 1,155 reviews
Wanted to love it
First of all this unit will be removed and returned when my plumber comes by. Installation wasn’t easy, needed pliers to install the 1/4 inch outlet hose. Of course one on the cartridges started leaking. Water flavor is good. We wanted to love this unit, but it has to may issues.
by If only
Amazing Product!!!
I absolutely love my Aquasana 3-Stage under counter filter! I've been buying bottled water for years and was looking for a more sustainable and cost friendly solution. Not only is it reasonably priced, but most importantly the water tastes super clean and delicious. It really makes drinking water more frequently easy!
by JeanB
I purchased the standard 3-Stage Filter System
In early November, I purchased the 3-Stage Water Filter system. It took me approximately 1-½ hours from start to finish. Upon completion, I removed the plastic insert to start the system and turned on the water supply. Amazingly, there were no water leaks. I flushed the system for 10 minutes, as required, and afterwards, had my first glass of filtered water. The water was delicious! I couldn't have been more satisfied. I unequivocally recommend the Aquasana filter system I have purchased, to anyone wanting wanting an easy-to-install, inexpensive, under-counter system.
by willie f
Good product; great value.
Reliable product. Good product; great value. Good product; great value
Second time cartridge sump busted
2nd time a cartridge sump busted. Much water damage. No reply from Aquasana, like before. Had just received replacement cartridges a few days before. Filter warning light did not come on. BEWARE AQUASANA
by Lennyjack
Response from Aquasana Customer SupportJul 24, 2020
Thank you for reaching out! We apologize if our service did not meet your expectations, and we appreciate you taking the time to share your concerns!   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-6pm CST, and weekends from 9am-5pm CST.   Thank you,   Aquasana Support
Do not like it
i hate it. It’s very noisy !!! It takes five minutes to empty tank and three hours to refill. Too slow of a process! Very very noisy!
by Lynnie
Great Product and easy to install
This product is awsome and very easy to install. The water is very clean, refreshing and tastes great. Filters lasted more than 8 months. The Andriod app helps a filter life remaining. Great product
by Humsleo
When we had our kitchen of forty years remodeled, our contractor suggested that we add a bar sink. It was on this sink that we added the Aquasana three stage under counter water filter. Since we have had it installed we not only use it for drinking water but for our coffee maker and when preparing tea. As time goes on I know we will use it even more.
by Happy Family
Pleased with the water taste and pressure.
We are enjoying the new water filter. Decided to give it a 4 only because of the noise when it is filling. When we touch the faucet base, it is much quieter. Need to make sure you push the white hose into the remineralizer and the box - almost a clicking noise. We are very pleased with our purchase and to have good tasting clean water!
by Su2i3Q
Aquasana Review
Great product easy to intall..........,,,,,,,,,,,,,
by Rick V
Showing 1-10 of 1,155 reviews