Aquasana Under Counter Reverse Osmosis Water Filter - AQ-RO3
$399.99 $279.99
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Aquasana Under Counter Reverse Osmosis Water Filter - AQ-RO3
$399.99 $279.99
We're sold out, so buy the Aquasana 4 stage Reverse Osmosis (RO) system directly from the manufacturer by clicking here.
If you want to remove fluoride, nitrate, arsenic and other hard to remove contaminants and want the convenience of a separate faucet with the cleanest water possible, this is one of your options.
Your other option is a new water filter that changes everything! The Propur Promax Countertop and Propur Promax Under Counter Water Filter Systems. These water filters perform as well as an RO system with a much lower cost. Learn more here.
The Aquasana Reverse Osmosis (RO) Water Filter System carries NSF 42, 53, and 58 certifications and is certified by NSF to remove 74 contaminants. Aquasana uses their “Claryum” filtration technology to remove chlorine and chloramines, VOC’s including TTHM’s, lead, mercury, MTBE; and the RO filter to remove arsenic, fluoride, nitrate and nitrite, radium 226/228, and the other “RO only” contaminants.
Made in the USA.
Why NSF Certifications are Important
If you are evaluating other Reverse Osmosis water filter systems, be sure to ask if the filters have certifications for 42, 53 & 58 by NSF which is an independent third party tester. Also, ask for a copy of the test report. The report will show you what percentage of each contaminant the filter removes.
Some systems aren't as effective as others. We selected this RO system as the best because it had three certifications by a third party and the test results were better than other systems tested. We've read hundreds of test reports and this filter's results really stood out. View the test report at the bottom of this page.
This RO System Remineralizes Your Water
Some have expressed concern that the effectiveness of RO filters causes them to remove some desirable minerals such as calcium, magnesium, and potassium from your drinking water.
To counteract this, Aquasana includes a “remineralization” component after the RO filter that adds these desirable minerals back into your filtered water.
If you'd prefer not to have an RO system remove and then remineralize your water, you have other options that are highly effective at removing contaminants. Check out the Propur Promax Countertop and Propur Promax Under Counter Water Filter Systems. These water filters perform as well as an RO system with a much lower cost. Learn more here.
Why Choose Reverse Osmosis?
Reverse Osmosis filter systems offer the highest level water filtration available for home use. In addition to the activated carbon filters, a Reverse Osmosis system employs a Thin Film Composite (TFC) membrane capable of removing many toxic contaminants other methods cannot, such as Arsenic (pentavalent), Barium, Fluoride, Nitrate and Nitrite, Perchlorate, Radium 226/228, and Selenium. Reverse Osmosis filters carry their own, specific NSF certification, 58. The best systems and the only ones you should consider will also have NSF certifications 42 and 53, and remove all of the key contaminants we have been tracking in our previous filters.
Because of the science behind Reverse Osmosis, these systems require a separate holding tank (2-5 gallons) that you will need space for, and also produce waste water so they will need to be tied into your drain. Most systems come with “quick-connect” attachments making DIY installation possible, but it will be more involved than a regular under the counter filter and you will probably need a plumber. It's typically a 1-2 hour job.
- Filter Life: 6 months-2 years
- Filter Cost: $23.99-$64.99
- Filter Media: carbon, ion exchange/RO
- Flow Rate: 0.5 GPM
Have more questions? Call us at 1-800-221-5109 or email us.
Want to see the Aquasana RO system test results? Click here for the full test report!
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This filter uses leading-edge technology to reduce and remove a broad range of over 200 contaminants including:
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Features of the ProOne Under Counter System - ProMax PMC-4000
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Need something more portable? This filter is available in a Countertop style.
Third-Party Test Results
Tested by a Third-Party Lab
This filter was tested by a certified lab. Read the Test Results for the ProOne Under Counter Water Filter System here.
FAQs
Frequently Asked Questions
1. How do I know when to replace my filter cartridge?
- When the flow rate diminishes.
- When you notice a change in taste or odor.
- Approaching a years’ usage.
- We recommend you drain your system and remove the filter element.
- When ready to use, just reinstall the filter and flush for about 3 minutes before use.
- The actual life expectancy of your filter will vary depending on the specific chemistry and level of contaminants present in your water source.
- We recommend you replace your filter every 9-12 months.
Return Policy
Return Policy:
If not satisfied, return the filter in the original packaging within 30 days of receipt for a full refund less return shipping costs.
Shipping
Shipping Information:
Ships FREE via UPS and typically arrives within 3-6 business days.
Have more questions? Call us at 1-800-221-5109 or email us. -
ProOne ProMax Dual Under Counter Water Filter System
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Do you want the cleanest water? Choose the ProOne ProMax Dual Under Counter Water Filter System.
The ProOne (formerly Propur) Dual-Stage system includes a 5-Micron pleated pre-sediment filter which helps protect your Propur filtration system by reducing the damaging effects of sediment such as dirt, sand, debris, rust and other sediments commonly found in aging water supply pipes before your supply water reaches the filtration system. Ideal for use with city or well water.
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This filter uses leading-edge technology to reduce and remove a broad range of over 200 contaminants including:
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Read the ProOne ProMax Under Counter installation instructions.
Features of the ProOne Under Counter System - ProMax PMC-4000
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- Premium quality housing and fittings (all NSF approved materials)
- Includes countertop faucet in polished stainless
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- Flow rate: 0.2 - 1.0 gallons/min
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What Makes this Under Counter Drinking Water Filter so Special
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- Does not remove minerals from your water like Reverse Osmosis water filters
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- Removes/reduces fluoride and over 200 water contaminants
- Tested by an independent, certified third-party lab
- No power required!
- Long-lasting filter life (up to 1 year) (need a replacement filter? Click here)
- Easy to replace filter element
Need something more portable? This filter is available in a Countertop style.
Third-Party Test Results
Tested by a Third-Party Lab
This filter was tested by a certified lab. Read the Test Results for the ProOne Under Counter Water Filter System here.
FAQs
Frequently Asked Questions
1. How do I know when to replace my filter cartridge?
- When the flow rate diminishes.
- When you notice a change in taste or odor.
- Approaching a years’ usage.
- We recommend you drain your system and remove the filter element.
- When ready to use, just reinstall the filter and flush for about 3 minutes before use.
- The actual life expectancy of your filter will vary depending on the specific chemistry and level of contaminants present in your water source.
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4. How do I know when it's time to replace the Pre-Sediment Filter?
- It really depends on how much sediment you have in your water. You should change it when you notice cloudiness or white specks.
Return Policy
Return Policy:
If not satisfied, return the filter in the original packaging within 30 days of receipt for a full refund less return shipping costs.
Shipping
Shipping Information:
Ships FREE via UPS and typically arrives within 3-6 business days.
Have more questions? Call us at 1-800-221-5109 or email us. -
ProOne ProMax Countertop Water Filter System
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Propur is now ProOne - same company and great products, just sporting a new name.
This filter uses leading-edge technology to reduce and remove a broad range of over 200 contaminants including:
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- Water disinfectants - Chlorine & Chloramine
- Inorganic non-metallics
- Herbicides
- Pharmaceuticals
- PFOA
- PFOS
- Micro-organisms
- Micro Plastics (down to 2 microns)
- 1,4 dioxane
The advanced Promax filter technology is effective at removing contaminants that previously required a reverse osmosis and carbon filter system!
Tested by a certified third-party lab to meet NSF 42, NSF 53, and NSF P231 standards.
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Features of the ProOne Countertop System - ProMax PMC-3000
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- Premium quality housing and fittings
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- ABS plastic housing - BPA & BPS free
- No power required
- Easy to replace filter element
- Includes a diverter valve allowing you to switch between filtered and direct faucet water
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- Flow rate: 0.2 - 1.0 gallons/min
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What Makes this Countertop Drinking Water Filter so Special
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- Removes/reduces fluoride and over 200 water contaminants
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Also available in an Under Counter style.
Third-Party Test Results
Tested by a Third-Party Lab
This filter was tested by a certified lab. Read the Test Results for the ProOne ProMax Countertop Water System here including Micro Plastics Lab Tests.
FAQs
Frequently Asked Questions
1. How do I know when to replace my filter cartridge?
- When the flow rate diminishes.
- When you notice a change in taste or odor.
- Approaching a years’ usage.
2. What if I don’t use the system for an extended period of time?
- We recommend you drain your system and remove the filter element.
- When ready to use, just reinstall the filter and flush for about 3 minutes before use.
3. How long will my filter last before needing to be replaced?
- The actual life expectancy of your filter will vary depending on the specific chemistry and level of contaminants present in your water source.
- We recommend you replace your filter every 9-12 months.
Return Policy
Return Policy:
If not satisfied, return the filter in the original packaging within 30 days of receipt for a full refund less return shipping costs.
Shipping
Shipping Information:
Ships FREE via UPS and typically arrives within 3-6 business days.
Have more questions? Call us at 1-800-221-5109 or email us. -
ProOne Dual Stage Countertop Water Filter System
From $229.95
Visit product page →Free Shipping
Do you want the cleanest water with the convenience of a countertop system? Choose the ProOne Dual Stage Countertop Water Filter System with the Promax filter.
The ProOne™ Dual-Stage system includes a 5-Micron pleated pre-sediment filter which helps protect your ProOne filtration system by reducing the damaging effects of sediment such as dirt, sand, debris, rust and other sediments commonly found in aging water supply pipes before your supply water reaches the filtration system. Ideal for use with city or well water.
Routine replacement of the 5-Micron filter element can help increase the effectiveness of your filtration system and can even change the taste of your drinking water.
This filter uses leading-edge technology to reduce and remove a broad range of over 200 contaminants including:
- VOCs
- Lead
- Fluoride
- Heavy metals
- Pesticides
- SVCs
- Water disinfectants - Chlorine & Chloramine
- Inorganic non-metallics
- Herbicides
- Pharmaceuticals
- PFOA
- PFOS
- Micro-organisms
- Micro Plastics (down to 2 microns)
- 1,4 dioxane
The advanced Promax filter technology is effective at removing contaminants that previously required a reverse osmosis and carbon filter system!
Tested by a certified third-party lab to meet NSF 42, NSF 53, and NSF P231 standards.
Installs in a few minutes. Read the installation instructions. Requires a standard faucet (one without a pull-out sprayer).
Features of the ProOne Dual Stage Countertop System - Promax PMC-3000
- Dual stage housings
- Premium quality housing and fittings
- Fits most faucets with removable aerator
- Optional adapter available for most other faucet types
- Includes one ProMax™ and one Pre-Sediment 5-Micron pleated filter elements
- BPA & BPS free filter housing
- No power required
- Easy to replace filter
- Includes a diverter valve allowing you to switch between filtered and direct faucet water
- Dimensions: 11" x 4.75" x 12.5"
- Flow rate: 0.2 - 1.0 gallons/min
- Filter life:
- Main Filter: Up to 1 year- click to order a replacement
- Pre-Sediment Filter: Depends on the amount of sediment in your water. Change when you see cloudiness or white specks - click to order a replacement
- 1 year warranty
- Compatible with salt-based water softeners
- Made in the USA
What Makes this Countertop Drinking Water Filter so Special
- As effective as a Reverse Osmosis water filter system
- Installs in minutes; click to read installation instructions here
- Does not remove minerals from your water like Reverse Osmosis water filters
- Portable, take it with you when you move
- Removes/reduces fluoride and over 200 water contaminants
- Tested by an independent, certified third-party lab
- Long-lasting filter life, up to 1 year (need a replacement filter? Click here)
Also available in an Under Counter style.
Third-Party Test Results
Tested by a Third-Party Lab
This filter was tested by a certified lab. Read the Test Results for the ProOne Countertop Water System here.
FAQs
Frequently Asked Questions
1. How do I know when to replace my filter cartridge?
- When the flow rate diminishes.
- When you notice a change in taste or odor.
- Approaching a years’ usage.
2. What if I don’t use the system for an extended period of time?
- We recommend you drain your system and remove the filter element.
- When ready to use, just reinstall the filter and flush for about 3 minutes before use.
3. How long will my filter last before needing to be replaced?
- The actual life expectancy of your filter will vary depending on the specific chemistry and level of contaminants present in your water source.
- We recommend you replace your filter every 9-12 months.
4. How do I know when it's time to replace the Pre-Sediment Filter?
- It really depends on how much sediment you have in your water. You should change it when you notice cloudiness or white specks.
Return Policy
Return Policy:
If not satisfied, return the filter in the original packaging within 30 days of receipt for a full refund less return shipping costs.
Shipping
Shipping Information:
Ships FREE via UPS and typically arrives within 3-6 business days.
Have more questions? Call us at 1-800-221-5109 or email us.
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