Aquasana 2 stage vs 3 stage

In this Aquasana 2 Stage vs 3 Stage comparison, you will find out all the differences you need to know about them to make the best decision for a home filtration system. These products are very similar, but there are some general things about these filtration systems that you may not be familiar with. And the differences between the two will definitely influence your buying decision.

Aquasana 2 step – Click here to check the price

Aquasana 3 step – Click here to check the price

Aquasana 2 stages vs 3 stages: which water filtration system is right for you …?

Construction and design

Aquasana 2 steps vs 3 steps

Aquasana 2-Stage Water Filtration System

The Aquasana 2 and 3 Stage Undercounter Drinking Water Filters are designed with the perfect blend of aesthetics and functionality. The filtration system is compact and designed in such a way that it can easily be placed under a standard kitchen sink. The 3-stage filter is slightly larger and heavier than the 2-stage 6-pound filter.

A similar, dedicated faucet is included with both filters. This faucet is all metal and 100% lead free. The water faucet is similar in size and dimensions to standard water faucets at 7 inches in height and within reach of the 4.75 inch spout. You need a ½ inch hole in the sink for this faucet. At a slight price variation, it comes in three different colors – brushed nickel, chrome, and oil rubbed bronze.

Taste and smell of filtered water

Being an in-line system, these two Aquasana models filter the water while you continue to use it rather than storing it. Plus, using selective filtration, these filters remove unwanted chemicals and contaminants from the water while leaving essential natural elements like calcium and magnesium. These elements are believed to be responsible for maintaining the taste of the water as it is. If you remove all of the items, the water will taste unnatural and off-putting. Thus, these two Aquasana filters do not compromise the taste of the water while ensuring its cleanliness.

Ease of installation and replacement

Perhaps one of the biggest advantages of these filters, you won’t need a plumber to install them like some of the other filters available on the market. They are easy to install and with the help of a drill and screwdriver, you will have access to clean, potable water in no time. Step-by-step instructions and parts needed for installation are included with the filters.

Plus, customers have only had good things to say about the easy-to-change filters. In both models, filter replacement is stress-free with a simple twist. There is no requirement for any tools or help.

Aquasana recommends replacing filters every 6 months or after you have passed the 500 gallon mark with the Aquasana 2 Stage Filter. The filters on the 3-stage Aquasana model can be replaced after 6 months or after using 600 gallons of water.

Like most water filters, you need to consider the cost of replacement filters. According to the official website, naturally the 3-stage filter is slightly more expensive than the 2-stage offer.

However, since 3-stage filters have the capacity to deliver 600 gallons of water compared to 500 from stage 2, the cost per gallon filtered is actually lower for the 3-stage filter.

Click here for more details on the Aquasana 2 scene

Click here for more details on Aquasana step 3

Filtration efficiency

Aquasana systems are the only systems on the market today to operate with Claryum filtration technology. These filters reduce up to 99% over 60 contaminants. This is considerably more than most filters currently available on the market.

The first and second stages are identical in both systems. Activated carbon, a common filtration medium is used in the first stage to filter out unwanted chemicals. The second stage consists of an ion exchange filter where the micro-pollutants which have escaped the activated carbon are taken care of.

3-Stage Aquasana, as the name suggests, has an additional stage in filtration, where the water finally passes through a submicron filter. Capable of filtering particles as tiny as 0.35 microns, also captures asbestos and chlorine resistant cysts in water, making it even safer to drink.

Filtration capacity

Each 2-stage Aquasana filter set claims to give 500 gallons of clean water, while each filter set in the 3-stage Aquasana model claims to give 600 gallons of water. The additional filter of the 3-stage Aqausana is responsible for increasing the capacity of the system.


Aquasana 2 and 3 stage filters are certified by the NSF (National Sanitation Foundation) and ANSI (American National Standards Institute) systems as one of the most effective contaminant removal systems.

Operating state

The flow rate of both filters is the same at 0.5 gallons per minute and the operating pressure is in the ideal range of 20 to 80 psi. This secures your pipes and prevents leaks. The operating temperature of the two filters ranges from 40 to 90 degrees, which is similar to that of almost all other products.

Additional features

Aquasana 2 on 3

Aquasana 3-stage water filtration system

A remarkably useful feature common to 2 and 3 stage filters includes the alert for filter replacement. A built-in alarm that beeps and flashes when it’s time to change filters is the highlight of these filters. Few products on the market have this additional alert. This alarm works on battery and the filter is equipped with a Lithium battery for this purpose. This battery can be easily replaced once depleted after its autonomy of nearly 1600 hours. If you prefer the alarm not to let you know when to replace the filter, you can easily remove the battery. It does not interfere with the operation of the filter.

In addition, these filters are designed with the environment in mind and their design is environmentally friendly with a minimum of disposable plastic parts.

Since their replacement items are over 95% biodegradable carbon, you can recycle them yourself by recycling the numbered plastic pieces and putting the carbon in a compost pile or garden soil.

Overall performance

Most customer reviews largely applaud the performance of these filters. Ease of installation and replacement are the main advantages of these Aquasana filters. The flow is sufficient for home use and the design is so compact that it doesn’t take up much space and is barely noticeable.

However, the need to replace filters every six months is considered the biggest drawback compared to some of the other filters on the market, most of which only need to be replaced after 12 months.

Click here to see Aquasana 2 Stage Reviews and Ratings

Click here to see Aquasana 3 Stage Reviews and Ratings


A one year warranty is offered on both filters. They also come with a 90-day warranty from the date of purchase.


When it comes to comparing the Aquasana 2-Stage vs. 3-Stage Water Filtration System, it’s a personal choice. But the best filtration system is definitely the 3-stage filter. For some, this extra layer of protection will give them the peace of mind that they are drinking the safest water possible. But the 2-stage filter is fine too, it’s all based on what makes you most comfortable.

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