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Water filters

Aquasana AQ-4000
Approximate retail price:
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Summary: This model has been tested by our experts.
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Community icon32 people have reviewed this model.
Type: Countertop water filters
About - Aquasana AQ-4000

The Aquasana AQ-4000 is part of the water filter test program at Consumer Reports. In our lab tests, water filter models like the AQ-4000 are rated on multiple criteria, such as those listed below.

Lead removal:
Lead removal indicates the percentage of lead that was removed by each filter.

Chloroform removal:
Chloroform removal rates the percentage of chloroform removed. A filter's ability to remove chloroform predicts how well it will remove organic compounds as well as byproducts created by disinfectants used by water systems.

Flow rate:
Flow rate is how fast a gallon of water filtered through the cartridge. The criteria for flow rate scores differ between different types of filters. Faucet-mount, countertop, and undersink models have the same criterion; carafes and reverse osmosis models each have their own.
About This Brand

This company's countertop models use a dual-filtration system that includes an ion-exchange method in the water-filtration process. Its products are sold online and in plumbing-supply outlets.

Features & Specs - Aquasana AQ-4000
info Filter cost 108
info Filter-life indicator Yes
More features and specs
User Reviews - Aquasana AQ-4000
User Reviews
Already own it? Write a review
aquasana under the counter water filter
It Did Work For A While
Then It Started Leaking
Best Uses
the problem is the hose that connects the 2 filters. Mine started leaking and then filled up the outer housing. The hose was leaking on both sides. I'm a handy man, so I thought I would just change the hose. I loosened the stainless steel crimpon clamps, and pulled, but the plastic housing broke on both sides. Not good quality! I phoned Aquasana and they offered a new housing for $39, but it's the same housing for 20+ years, so it will probably leak too at some point...
How long have you owned it:
More than six months
Bottom Line
No, I would not recommend this to a friend.
Hardware is a pain
Water tastes good
Cartridge Hard To Change
Best Uses
I've been using this for nine years and have been mostly satisfied. I dread changing the cartridges though. I have Band-aids on my knuckles right now from trying to change them. Lately the counter-top unit has been leaking. Company changed the casing for free. Now the nozzle on the faucet sprays everywhere. I'm getting tired of the hassle so and looking for a different brand.
How long have you owned it:
More than six months
Bottom Line
Yes, I would recommend this to a friend.
great tasting water
Easy Install
Filter Lasts Long
Great price
Great taste
Best Uses
use the countertop filter for more than 3 years and we love everything about this product. The filters last longer then the recommended 6 months.
How long have you owned it:
More than six months
Bottom Line
Yes, I would recommend this to a friend.
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