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The THD-RO3-R consists of Carbon (Stage 1) and Claryum (Stage 3) filter cartridge replacements for the THD-RO-3 OptimH2O Reverse Osmosis Drinking Water System. Aquasana OptimH2O delivers the best drinking water available for optimal hydration. It is the first system of its kind to pair powerful reverse osmosis filtration with Claryum selective filtration PLUS re-mineralization. Removes the most contaminants from your water while maintaining the benefits of healthy minerals that other reverse osmosis systems simply remove. Reverse Osmosis is the only proven water filtration method on the market to effectively remove fluoride from regular tap water. Aquasana’s filter removes over 95% of fluoride for optimally healthy, clean water. The OptimH2O also re-mineralizes water to put back the healthy minerals lost in the reverse osmosis process like calcium, magnesium, and potassium for optimally alkaline, pH balanced water.
- Replacement cartridge for AQ-RO3.56
- Carbon and claryum filters (stage 1 and 3) should be replaced every 6 months or 365 Gal. for optimal filter effectiveness
- Other reverse osmosis systems typically reduce 5-15 contaminants, Aquasana reduces 74
- Reverse osmosis reduces 14 impurities including fluoride, nitrates, nitrites, lead, radium and arsenic
- Selective claryum filtration reduces 60 contaminants including chlorine, chloramines, heavy metals, pesticides, and herbicides
- Re-mineralization designed to provide healthy amounts of calcium, magnesium and potassium for optimally alkaline, pH balanced water
- Full system NSF certification, not just select components like tubing or tanks, Aquasana proudly displays the NSF logo for standards 42, 53, and 58
- Unlike other water filter certifications, full NSF certification requires extraction testing to ensure the system does not leach contaminants back into your water
- Removes up to 99% of contaminants including arsenic, chlorine, lead, fluoride, heavy metals, chloramines, mercury, asbestos, and more
- 1 year manufacturer’s warranty and toll-free lifetime support backed up by Aquasana water filtration specialists based in Texas (866) 662-6885
- Replacements engineered for ease; eco-friendly carbon and claryum filter housings easily twist off so replacing your filters is a snap
| Weight | 1.3 lbs |
|---|---|
| Dimensions | 5.13 × 11.00 × 2.50 in |
| Brand/Model Compatibility | AQ-RO3.56 |
| Features | Twist and lock design |
| Filtration Method | Carbon Block |
| Model | THD-RO3-R |
| Number of filters included | 2 |
| Pack Size | 2 |
| Replacement Filter Type | Reverse Osmosis Replacement Filters |
| Water Filtration System Type | Reverse Osmosis |
95 reviews for Aquasana Stage 1 and 3 RO Filter Replacement
Only logged in customers who have purchased this product may leave a review.
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Gilberto Walter (verified owner) –
Being a long time customer of Aquasana, starting with a countetop filter years ago and eventually upgrading to an undersink unit, there was no question about choosing the OptimH2O reverse osmosis unit for our new home. Installation went without a hitch and I even learned a bit about working with PEX in the process. Customer service has always been top notch and warranty replacement was above and beyond with a previous filter unit.
Greg Hartmann (verified owner) –
It is the only water filter we’ve ever used of this kind (RO variety), but we love it. My in-laws have a similar product that they paid WAY MORE money for that doesn’t even add the minerals back to the water, so I think this company really knows what it’s doing.
Joyce Schmeler (verified owner) –
I like the result but replacing cartridges extremely difficult for arthritic old lady. And now there is a leak and the plumbers I have called say they have no experience fixing this product. So while the result is good, maintenance of the system seems problematic except for an experienced (and strong) do-it-yourselfer. Additionally, the Aquasana help line provides little or no assistance or guidance.
Della Tillman (verified owner) –
The filters I have previously replaced and they are easy to do. The one thing that I am wondering about is a sound every once in a while that sounds like someone farting coming from the filter system. It is quite funny but I am wondering if this portends a problem.
Cathy Moen (verified owner) –
Any consumable water we use at home or on the go.
Finn Kirlin (verified owner) –
We love our Aquasana RO filter! In fact, we just had a plumber out for another household plumbing issue and he commented that this RO system is the best one out there We feel good knowing that we’re drinking pure, clean water! We love it!
Christiana Bergstrom (verified owner) –
I bought this system for my daughter and grandchildren because our local has a higher Chromium 6 level than allowed by law. The water is fine, it tastes like water with less Chloramine smell. The engineering of the equipment is in question regarding the venting at the key hole on the filtered water faucet. The key hole allows water to run out when the waste line is clogged. system overflows. I’m not sure, but why wasn’t this discharge routed through the waste line to pressurize it to unclog it? As far as the water quality goes I cannot test it to say it’s great or bad, I don’t have the equipment nor do I want to spend hundreds of dollars to have it tested.
Jonathon Weissnat (verified owner) –
Love this filter system! Puts the minerals back in your water
Gerda Walsh (verified owner) –
I have an auto immune situation and I actually tested out allergic to my town’s water through skin allergy testing. Then I was tested on my skin with the aquasana water and it was fine. no allergy! I recommended this system to another neighbor who also has auto immune disorder. I like this system.
Michel Lemke (verified owner) –
The RO Unit works very good and the reorder filter system is great.Customer service very helpful.Easy to switch out filters.
Carson Cartwright (verified owner) –
I just wish you would filter Fill and recharge Faster
Joey Schmidt (verified owner) –
The filters work great to remove impurities. Easy to change.
Chasity Tillman (verified owner) –
We use this product as our main source of water in the home.
Eva Dicki (verified owner) –
These replacement filters are easy to install. Five minutes Max and no post installation break-in period.
Sage Corkery (verified owner) –
Extremely easy to replace so long as you remember the position of the filter as it is removed.
Al Connelly (verified owner) –
If you know about the disaster with Flint water you’ll love having the peace of mind that this product will deliver.
Samantha Zemlak (verified owner) –
We had the 2 filter under counter type before we bought the RO System. Apart from it taking a while to fill, and let run after, it works a charm and the water is good. Great product and good service. I have water for life which is most reliable. Thank you Aquasana.
Velma Bergstrom (verified owner) –
I like that the product is shiped to me every 6 months. Which is how I know when it is time to replace the filters.
Jerome Collier (verified owner) –
I love my Aquasana Reverse Osmosis filter. We have used the water filters for years. I was excited to get the Reverse Osmosis filter because it also removes fluoride. The water taste is fantastic. I love that it also comes with a remineralizer.
Chesley Trantow (verified owner) –
I feel I have found the ideal filter system. Great quality water with easy replacement filters. Thanks