Aquasana AQ-4000W Countertop Water Filter Reviews

Get clean, safe and tasty water straight from your tap with the innovative Aquasana AQ-4000W countertop water filter.

It filters water under pressure and is specially made to remove foul odor, contaminants, improve the taste and health benefits of water.

This countertop water filter is really easy to use and all you need for installation, is to attach the diverter to your sink tap and you are ready to go.

The Aquasana AQ-4000W countertop water filter uses three filtration systems to remove 97% chlorine and is NSF certified to get rid of 76 other contaminants including lead and harmful pharmaceuticals.

It has a twin cartridge that when used with the carbon, ion exchange and sub-micron filters, cleans water under high pressure for more effective results.

This unit uses Selective Clayrum filtration that leaves healthy Totally Dissolved Solids (TDS). These include magnesium, calcium, and potassium.

It filters with 450 gallons capacity, which lasts up to six months in the average household. One complete filter use can save up to 4000 plastic water bottles.


  • Leaves water with an amazing taste.
  • Has an upgraded design that stops leakages from the bottom of the unit.
  • Easy to maintain.
  • Durable.


  • Can only be used with cold water.
  • Frequent reports of swivel collar leaks from buyers.

Product Overview

ProductAquasana AQ-4000W Countertop Water Filter Reviews
Rating3.8 out of 5 stars (More than 309 reviews)
Recommended price69.99 USD (Check the latest price at

Product Specification

FeaturesHousing filter
FiltersActivated Carbon, Catalytic Carbon, Ion-Exchange, Absolute Sub-Micron Mechanical Filtration
AQ-4035 replacement filter
Flow rate0.5 GPM
Capacity450 Gallons / 6 Months
Filter changing indicatorN/A
Dimensions12 x 7 x 4 inches
Weight0.16 ounces

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Aquasana AQ-4000W Countertop Water Filter Reviews