Aquasana 3-Stage Under Counter

Aquasana 3-Stage Ratings

Design - 90%
Features - 87%
Performance - 87%
Capacity - 79%
Ease of use - 91%


Very Good

We like this unit because it is easy to install, low maintenance and highly efficient. Furthermore, it was designed with environmental concerns in mind.

User Rating: 4.85 ( 1 votes)

When it comes to the water filter industry, there are certain brands that stand out due to their experience in this industry as well as due to their good understanding of the market’s needs. Since water filters are rather new appliances, most people find them complicated and difficult to use. It is essential for water filters to be not only efficient but also easy to use, particularly easy to install. This is where Aquasana filters come in the picture. These filters can easily be installed by anyone. Furthermore, they are certified by the NSF and are very easy to maintain. Since the most convenient home filters are the under-sink ones, let’s take a look at the Aquasana Drinking Water Filter 3-Stage Under Counter.


The design of under sink units isn’t very important because these filters aren’t in plain sight. However, since most people use the place under the sink for storage, it is essential for an under sink water filter to be compact and take little space. We are happy to report that it has a very convenient and modern design. It can be mounted on the side of the under-sink cabinet and takes little to no space. Furthermore, this filter also comes with a stylish designer faucet with an all metal construction and 3 finish choices: brushed nickel, oil rubbed bronze and chrome.


The filter uses the NSF certified Claryum filtration technology. This means that this technology has been independently tested and it proved that it removes over 97% of 60 common tap water contaminants, delivering pure, great tasting water. This 3 stage filtration system filters heavy metals (such as mercury and lead), cysts (even the ones that usually resist chlorine such as cryptosporidium and giardia), pesticides, volatile organic compounds, herbicides and much more. In fact, if you compare this unit with any of the lead pitchers on the market, you will notice that the Aquasana under sink unit is a product with a higher value as it filters 10 times more contaminants.


The under counter filter is designed in order to filter the dangerous contaminants that are usually found in tap water, without meddling with the beneficial minerals. Most water filters on the market, especially the ones that use the reverse osmosis technology filter all compounds found in tap water, including potassium, calcium, and magnesium which are in fact beneficial to everyone’s health. However, this is not the case of this water filter. The unit uses activated carbon which targets herbicides, pesticides, MTBe and VOCs. The second stage uses catalytic carbon in order to target chlorine and chloramine and the third stage uses an ion exchange technology in order to filter heavy metals.

Ease of Use

This filter is very low maintenance. In order to replace the filter cartridge, all you have to do is twist off the cartridge capsules, replace the used cartridge with a new one and twist the capsule back on. Furthermore, this unit has a rather large capacity. In fact, its capacity is almost 15 times bigger than that of a leading gravity-based pitcher. For an average family, a 600-gallon capacity means that you only have to replace the filter cartridges twice per year. However, you don’t need to guess when the filter needs to be replaced as this unit comes with a smart alert system which lets you know when the cartridge’s capacity has been reached.

Other considerations

If you are uncertain of whether or not it delivers everything that it promises on paper, you should know it is certified to NSF/ANSI Standards 42 & 53 and that it comes with a 90-day satisfaction guarantee. The unit can be acquired for $174.99 and it also comes with a 1-year warranty. Furthermore, this unit is also environmentally friendly. It is designed in a way that reduces plastic waste by using as little disposable plastic parts as possible. The fact that it eliminates the need of buying bottled water altogether is also an important environmental factor to consider. Last but not least, this filter will pay for itself as no longer buying bottled water will be a great way to save money. This unit will lower your drinking water costs to 9 cents per gallon.