Aquasana AQ-4000W Countertop Water Filter System

Families who are looking for a more economical way for getting healthier, cleaner water need to look no further than the Aquasana AQ-4000W water filter system. The AQ-4000W was named as one of the top healthiest gadgets in the year 2011. This countertop water filter system offers the unmatched water filtration technology from Aquasana in a package that is portable and convenient.


To use the system another hole in the sink is not necessary. All you will need to do is attach the diverter to your current faucet and the unit will sit on your counter, taking up a very small amount of space.

What Kind of Filtration System Does it Use?

The water filter uses a unique twin cartridge system. The system uses an ion exchange, carbon filtration, as well as sub-micron filtration. The tap water is pushed through a filtration material that covers over 2 million sq. ft. of surface area. This allows it to remove three times as many contaminants that some of the other pitcher filtration systems that are on the market.

What Contaminants Does it Get Rid of?

There are some filter systems that will strip out healthy TDS and will leave you with water that has no magnesium, calcium, or potassium. The Aquasana filtration system is designed in a unique way so that it will remove the pollutants, get rid of odors, and improve the overall taste of your tap water without removing the healthy minerals. This leaves you with the best water for optimum hydration.

The certified contaminant reduction is 97.4% for chlorine, 99.9% for particulates, 99.9% for cyst live cryptosporidium, 99.3% for mercury, 81.8% for MTBE, and 99% for turbidity, volatile organic compounds, and asbestos.

Can you Switch from Filtered to Unfiltered Water?

You can easily switch from filtered to unfiltered water. There is a hose that connects to your faucet. The connector has a lever that will allow you to direct the water flow through the filters and then out of the faucet. You can control the stop and the flow of the water as you want or need. The lever looks like a paddle.

Does it Come with a Warranty?

The countertop filter system comes with a 90 day warranty. The warranty program is one of the best around, but it is unlikely that you will need it.

Pros and Cons

There are many great things about this particular countertop water filter. Some of the positive aspects of the water filter include:

• Easy to install
• 90 day warranty
• Compact design
• Affordable price

Some of the complaints about this particular countertop water filter include:

• May start to leak from the diverter, but customer service will replace if this starts to happen
• Water flow is slower
• Parts are plastic and can break easily


At a price of $80 to $100, the Aquasana AQ-4000W offers a great countertop water filter at a reasonable price. The unit is quite compact, so it will easily sit on almost every countertop without being much of a nuisance. Installation is quite easy as you will simply place a piece over your current faucet. The hose will go through to the piece that sits on the counter. Once you have installed the countertop water filter, you can begin using it right away.

The Aquasana 4000W provides users with drinking water that is cleaner, healthier, and tastes much better. For the convenience and portability, this countertop water filtration system is definitely worth the upfront costs, especially when you consider the amount you will save when you no longer have to purchase bottled water.



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Aquasana AQ-4000W Countertop Water Filter System Review
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Aquasana AQ-4000W Countertop Water Filter System Review
Our review of the Aquasana AQ-4000W. This is the best countertop water filtration system in our opinion.