Aquasana AQ-4000 Reviews: Worth Buying Counter Water Filter?

Aquasana AQ-4000 ReviewsWant the best countertop water filter at your kitchen counter? Then after reading the Aquasana AQ-4000 review , you might find what you need!

We all know a countertop water filter doesn’t require any installation process or plumbing. It is perfect for instant drinking water within your reach, fit for an RV, rental house, hostel, or anywhere where you cannot do plumbing, or simply you don’t want it.

In this Aquasana review, you will learn that it is also among the best countertop filters available in the market, not just for its performance but also for its classy design.

In-depth Analysis Of Aquasana AQ-4000 Reviews

In-depth Analysis Of Aquasana AQ-4000

We will go through every single point, feature, functionality, performance, and life span of this product to let you decide if it is fit for your household or not.

Its Filtration System                 

The new Claryum Filtration Technology is innovative in design and performance, containing a pair of cartilage with three different phases that include charcoal filters, ion exchange, and microfiltration, thus removing more than thrice contaminants as other top pitcher filters .

Twin Cartridge

Remove haziness (99%), sedimentation (99%), unwanted smell & taste, lead, VOCs (99.4), MTBE (89), mercury (96.6%), THMs , chlorine 99%, pesticide, herbicide, maintain pH and its 5-micron filter eliminate cyst also cryptosporidium & giardia by 99% along with 50 different contaminants for your unfiltered tap water.

Filter Lifespan

They last up to six months which means their filter can purify 500 gallons of water .


Each system is provided with a complete one-year warranty to ensure you get the best quality and if you are still not satisfied with the purchase, simply return it within 90 days.


This countertop is tested and certified by ANSI/NSF 42, 53, 401, and especially P473 standards to ensure you get the best quality drinking water.


Not only quality-wise, this countertop AQ-4000 filter stands among the best but also it is super affordable and much cheaper than other related countertop products available on the market.

Filtration Speed

The innovative dual cartridge countertop filter attaches to standard kitchen taps in no time. It delivers approximately 30 gallons of clean and safe water per hour for drinking or other kitchen chores.

Preserve Natural Minerals

Its smart, innovative filtration system eliminates unwanted pollutant s and retains magnesium, calcium, and potassium in filtered water beneficial for you.

Other Features

  •       Dimension: 12 x 7 x 4 inches
  •       Weight: 3 lb
  •        Pressure range: 20-80 psi
  •        Temperature range: 40-90 Fahrenheit
  •         Filter type: inline

Customer Reviews

The unit includes a Brass adapter to accommodate many types of faucets. Because the hose endpoints are color-coded, making installation easy, connect white to white and blue to blue. Unlike the previous version, this lacks this feature, now for a crucial piece of advice on upkeep. Grains of dirt will block the screen opening where the purified water exits from it occasionally. To avoid it, detach this small section, remove the three small screens, and clean it using a q-tip to solve the problem. So the flow rate from the filter should go back to normal.

Tyler Peterson
<b>Tyler Peterson</b>

Rather than hunting for filters or reading reviews, I opted to browse through the NSF registry and see which filtration systems were certified in each of the four areas. But there were just a few countertop units in each criterion, and this one is among them, so I just bought it and didn’t regret it a bit.


I’ve been using this company’s filtration for a long time. I’ve tried different filters, but this one filters water exceptionally well, and if you want to change the entire system, you can because the pricing is extremely fair.

Alex. J
<b>Alex. J</b>

Frequently Asked Questions (FAQs)

What is mainly eliminated from contaminated tap water?

This filtration system is NSF/ANSI recognized to eliminate up to 99 % of lead and many other contaminants, including asbestos, pharmaceuticals, chloramines, PFOA & PFOS, herbicides, pesticides, industrial solvents, mercury, and other volatile organic compounds (VOCs).

Which is better, RO or carbon filtration?

Carbon filters successfully eliminate the taste and smell of chlorine and chloride. Also, capture large particles and sedimentation. In reverse, osmosis is much better and can destroy nearly everything from a tap or well water; if large particles eradicate first to avoid filter membrane damage, then the efficiency of RO increases.

Can this countertop be used with a different faucet?

Yes, this countertop directly fits with your kitchen faucet effortlessly in no time with its provided hose and valve, so you can now have clean and filtered water with just one push on the knob.

Does water become too soft?

This system clearcut all contamination and harsh ion and metals from water and adds back naturally occurring minerals found in water like calcium, magnesium, and potassium, which is essential for our body to balance the amount of sodium in filtered water.


  •         It is compact in size as compared to other filters.
  •         Its hose valve allows the switch between tap and filtered water.
  •         Under budget and certified by NSF.
  •         It doesn’t  strip vital minerals from water.


  •         Sometimes the diverter valve gets stuck.
  •         Replacing filters is a little complicated.


After analyzing and interpreting everything about this Aquasana AQ-4000 review, we can say that this countertop not only delivers the best quality drinking water and ensures built customer satisfaction. Make sure it is certified and comes with a warranty to get a new one if something happens.

Now, who doesn’t want such an excellent product which is affordable and easy to install and take care of? So what are you waiting for? Go and grab one for your home sweet home.

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