Aquasana and Aquaox are top water filter brands. However, in our opinion, Aquaox is the winner of the two because it’s more durable, has a more comprehensive filtration process, and doesn’t require any maintenance for optimum performance. Here is what we found out in the Aquaox vs Aquasana battle:

Quick Comparison

Let’s do a quick head-to-head of both filter brands in specific areas:

In terms of cost: Aquasana is far more affordable than Aquaox. However, Aquaox offers payment in installments (monthly) to compensate for its very high cost.

In durability: Aquaox has the upper hand. It can last up to 2 decades for a family of four. Aquasana filters, on the other hand, last between a period of 5 -10 years.

In filtration performance: they’re both excellent. However, we favor Aquaox’s 7-stage filtration with Aquasana’s 5-stage process.


Aquaox Water Filter

  • Seven filtration stages

  • Remove 99.9% of contaminants

  • Capacity of 2 million to 3.2 million gallons

  • 1-year money-back guarantee period

Aquasana Water Filter

  • Five filtration stages

  • Eliminate 77 water contaminants

  • Capacity of 600,000 - 1,000,000 gallons

  • 90-day money-back guarantee period


Aquasana is one of the leading water filtration brands in America. Their whole house water filter systems are known for significantly solving water contamination issues for the entire house. Regardless of the household’s water source (well water or city water), Aquasana’s water filtration systems are the ideal solutions to your water troubles.

Notable among Aquasana’s water filters are Rhino® 1,000,000 Gallons and Rhino® 600,000 Gallons. These filters are specifically designed to treat and filter city water. Aquasana also has a system to tackle well water contamination: the Rhino® Well Water with UV whole house water filter system. Aquasana also has a salt-free water conditioner.


Like Aquasana, Aquaox is another reputable water filtration brand in America known for having high-quality filters. Aquaox has three whole house water filters. The first filter is Aquaox Regular which has a capacity of over 2 million gallons. The second filter is Aquaox XL which has a capacity of over 3 million gallons. The third option is the Aquaox reverse osmosis kitchen sink which is best for those who only want to filter drinking water from their water tap.

Aquaox Regular is better suited for small to medium houses (with a maximum of 4 bathrooms) and primarily residential buildings. On the flip side, Aquaox XL is meant for filtration on a larger scale. It’s better suited for commercial buildings with at least four bathrooms. Aquaox’s filter options are designed to be self-cleansing.

Media & Performance


Aquasana’s whole house filters have five filtration stages. Aquasana’s water filters are equipped with a sediment pre-filter, responsible for trapping and filtering out bigger contaminants such as silt, rust, etc., from your water supply. After the sediment filtration stage, the water goes through the system’s water softener cylinder.

Then it moves to the activated carbon filter’s filtration stage for further treatment and filtration. At this point, it will remove most of the contaminants. The fourth stage is the copper-zinc mineral filter, which removes contaminants such as pesticides, herbicides, heavy metals, and so on.

The final filtration stage is the post-filter which adds finishing touches to the already purified water. It removes whatever contaminants escaped the previous filtration stages and gives your drinking water an added level of protection.

Aquasana is a high-performing brand. So it is no surprise that their whole house filter systems can get rid of at least 75 contaminants.

Notable among these contaminants are:

  • VOCs
  • Pesticides
  • Sediments
  • Chlorine
  • Heavy metals (Such as mercury and lead)
  • Taste and odor
  • Industrial solvents

Finally, Aquasana’s options have NSF standard 53 and standard 42 certifications. Their whole house filters remove up to 99.9% of contaminants from your water supply.


This filter brand gives Aquasana’s whole house water filters a run for their money. As comprehensive as we thought Aquasana’s filtration process to be, Aquaox is even more comprehensive. Aquaox’s filters have a 7-stage filtration process, which is both incredible and outrageous.

Firstly, your untreated water goes through Aquaox’s sediment pre-filter, where the water is refined and prepped for further filtration. Larger contaminants such as rocks, dirt, hair, silt, rust, etc., are removed at this stage.

The second filtration stage of Aquaox’s whole house filters is the KDF® 55 filter which eliminates heavy metals such as mercury, lead, etc. It also sterilizes contaminants such as bacteria, fungi, and algae.

The third stage is the KDF® 85 filter which removes hydrogen sulfide from your water supply. The fourth stage is the Garnet filter. It performs the same function as the sediment pre-filter. It removes the larger contaminants the initial pre-filter missed.

The fifth stage of Aquaox’s water filters is the Centaur Catalytic Adsorptive Carbon filter. This stage eliminates hydrogen sulfide, VOCs, and chloramines from your water supply.

The sixth stage is the activated coconut shell carbon filter which removes contaminants such as chlorine and chlorinated solvents.

The last stage is the Filter-AG which eliminates turbidity and suspends material from your water. This prevents loss of water pressure in your pipes.

With such a comprehensive filtration process, Aquaox’s options can remove 99.9% of contaminants from the water supplied to your entire house.

The Aquaox’s filters remove the contaminants mentioned below:

  • VOCs
  • Bacteria, algae, and fungi
  • Chlorine
  • Trihalomethanes
  • Heavy metals
  • Chloramines
  • Trichloroethylene
  • Hydrogen sulfide
  • Tetrachloroethene and so many more.

Durability and Cost of Replacement


Aquasana’s house filter options are very durable. Its Rhino® 600,000 gallons is durable for six years, while its Rhino ® 1,000,000 gallons is durable for ten years. On the other hand, its well water whole house filters last for five years.

The costs of its replacement pre-filters and post-filters are very affordable. Plus, you may just need to change these filters about thrice in a year. The system is low-maintenance.


Their filters have a self-cleaning feature that automatically activates to backwash. This keeps the filter media of these whole house filters in optimum condition. With that said, they are virtually zero maintenance.

Once you install these filters, you don’t need to bother about replacing the filter cartridges. Aquaox’s water filters (1.2 million gallons) last for seven years.

Pros and Cons

Pros of Aquasana Whole House Water Filter

  • Aquasana filters are relatively affordable, considering their quality.
  • They are durable.
  • They come with a limited warranty period, the same as the expected lifespan of the filter.
  • Their filters come with a 3-month money-back guarantee period.
  • No drop in water pressure
  • NSF certification

Cons of Aquasana

  • It requires regular maintenance and filter replacements.
  • Low flow rate.

Pros of Aquaox Whole House Water Filters

  • Exceptionally durable: it can last up to 4 years for a family of 4.
  • Good flow rate
  • It comes with a 10-year warranty.
  • Zero-maintenance required
  • Has NSF certification
  • Self-cleansing feature

Cons of Aquaox

  • It is an expensive investment.
  • The digital head requires electricity to operate.


Both filters are excellent choices. Aquasana is best for budget-conscious buyers. They also have options for city water, well water, and microbial treatment.

On the other hand, Aquaox is best for people who are looking for long-term investment and a water filter that doesn’t require maintenance.

About the Author

Diana Masson

Diana works as a saleswoman in a hardware store. She knows the smallest differences between the various water filter brands and knows exactly what her customers want. Diana is a mother of 3 children and has been a homeowner for 2 years. Her family can rely on having the purest drinking water because she had a water filter installed herself last summer. Which one? Ask her yourself :)

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