Delicious, healthy, clean water from every tap in your house is now easier to get than ever. The EQ-300 Rhino Whole House filter system is one of a very few whole house water filter systems certified by NSF International for contaminant reduction – the gold standard in water filtration.

Look for whole system certification, not just the media

Having a certified system means that both the media and components are certified together for holistic and reliable system performance, not just that the media are known to reduce contamination. >> more info

Get a filter customized to treat your unique water issue

In addition to the basic systems available on our website, we can custom build systems to handle diverse water issues like chloramine contamination, well water, and high iron content. >> more info

See what our happy customers have to say about the EQ-300 systems

>> more info

Have a specific question?

Check out the FAQ section to see answers to the most frequently asked questions about hard vs. soft water, chloramine contamination, the media we use in our filters, and more. >> FAQ

Three-stage upflow design for superior contaminant reduction

Our award-winning whole house filters use a unique upflow design that eliminates channeling (which reduces filtration efficiency) and a three-stage filtration process that effectively reduces particles, dirt, rust, chlorine, water soluble metals*, scale*, herbicides*, pesticides*, pharmaceuticals*, and other harmful chemical compounds. >> more info

Ease of installation, ease of replacement

Aquasana whole house filters install easily with the help of a licensed plumber, and require no electricity or back-flushing. The system requires very little maintenance: replace the pre-filters when they change color (about every three months), and replace the media tanks every 300,000 gallons (about every three years for the average US household). >> more info

How do Aquasana whole house filters compare?

Performance	Chlorine Reduction	Water Testing & Customization	Ease of replacing the filter	No Electricity Required	No Backflushing Required	Satisfaction Guarantee
Aquasana EQ-300	>97%					90 Day
Leading Whole House FIlter	>50%

* Not part of NSF certification

NSF certified system

The Aquasana EQ-300 Whole House Water filter is certified by NSF International to NSF/ANSI standard 42. Many other systems on the market today claim contaminant reduction with certified media, but at Aquasana, we believe that the entire system and media should be certified. This holistic certification is important for two reasons:

Three-stage upflow design for superior contaminant reduction

Our whole house water system comprises three carefully sequenced stages, each with its own unique formula of high-potency contaminant-grabbing media. It's important to keep the media separate both to maximize contact time between the water and the media, and prevent mixing the different types of media. Mixing different filtration media can result in clumping and hardening over time, which causes channeling — where water flows through the same path through the media — minimizing effectiveness. We designed our sequenced three-stage, multi-directional flow system to optimize the contaminant reduction process and eliminate as much contamination as possible at each stage. Stage 1 is a sediment pre-filter that removes particles, dirt, and rust — essentially the easy stuff to get out. In stage 2, water flows up through a blend of a patented copper-zinc blend and crushed mineral stone. This stage greatly reduces chlorine, water soluble heavy metals*, and scale*. Then the water flows down to our third and final stage, where the high-grade activated carbon finishes the filtration process, reducing herbicides*, pesticides*, pharmaceuticals* and other chemical compounds* that may be present in your water.

* Not part of NSF certification

The EQ-300 Aquasana Whole House filter system is the only system that can be customized for your unique water needs at the best price — satisfaction guaranteed

Customizable

For unique water filtration

Custom-built systems that address well water, chloramine-treated water, heavy sediment or other specific contaminants are available at an additional cost.

Not sure what's in your water?

Aquasana can help you take the first step towards healthy water by finding out what contaminants are present in your water supply with our myWater service. Call us, and our Water Specialists will facilitate a test of your water with National Testing Labs.

To learn more, call one of our water quality specialists

(866) 662-6885

* Not part of NSF certification

Our whole house filter removes >97% of chlorine in your water and is certified by NSF International to NSF/ANSI standard 42

The EQ-300 Aquasana whole house filter system comes with a 90-day satisfaction guarantee and a 3-year warranty.

Ease of installation, ease of replacement

The system is easy to install with the help of a licensed plumber and requires no electricity or back-flushing. It installs where your water line enters your home - typically where your hot water heater is located. It can be installed inside or outside your home, and needs only be protected from extreme temperatures or direct sunlight. The system comes with everything you need for installation. System maintenance is easy: just replace the two main filter tanks every 300,000 gallons (about 3 years for the average household), and you can replace them yourself without a plumber's assistance. Simply shut off the water at your system with the provided valve, detach your main tanks (bottom and top tanks), and replace them with the new EQ-300R tanks. No messy, time-consuming, media-only replacements required. The process takes minutes.

1. What is the difference between city water and well water? — City water is pre-treated to make sure it is free of bacteria, viruses and common contamination sources. City water is regulated so that the contaminants regulated by the EPA fall within or below EPA guidelines. Well water is untreated water from an underground aquifer that is pumped into a house. Well water may contain higher than average levels of iron or sulfur, or other contaminants.

2. Why are whole house water filters considered point of entry systems? — The filtration system is installed at the point where the main water supply enters the home, delivering filtered water to all subsequent outlets.

3. What is hard water? — Hard water contains a higher than average amount of dissolved minerals (primarily calcium and magnesium), and a higher concentration of multivalent cations (Ca2+ and Mg2+).

4. Does having hard water mean it is contaminated? — No, hard water is more of a nuisance than a health issue, and is not considered contaminated. Most water sources in the USA are considered hard. Is hard water safe to drink? — Yes, hard water is healthy enough to drink.

5. What is soft water? — Having soft water means you have a lower concentration of dissolved minerals and multivalent cations in your water. The most recognizable trait of "soft" water is how much more soap lathers, as opposed to hard water, in which soap lathers less.

6. Does having soft water mean it is clean water? — Soft water does not mean clean water. Your water can be soft and still have contaminants present in the water. Soft water simply has a lower concentration of dissolved minerals and multivalent cations. Is it safe to drink? — Yes, soft water is considered potable as long as the water has not passed through a sodium-based water softener. Drinking water from a sodium-based softener increased your daily intake of sodium, which can lead to health problems in sodium-sensitive individuals.

7. What is a water softener? — A water softener is a system designed to remove/reduce calcium and magnesium from the water by exchanging it with sodium (or sometimes hydrogen or potassium). This is done through an ion exchange resin that alters the molecular structure of the calcium and magnesium from a divalent ion to a univalent ion, making the water "softer." Do softeners reduce chemical contamination? — Softeners do not remove chemical contamination themselves, but softeners sometimes have a carbon filter working in conjunction with the softener to treat contamination.

8. What type of filtration mediums do you use in the top tank of the EQ-300? — The EQ-300 top tank contains a KDF-55 medium (A mixture of 55% copper and 45% zinc mineral alloy) for the reduction of chlorine and certain heavy metals*, as well as a crushed mineral filter stone to enhance the water's pH and control scale* on internal plumbing. Both media are bacteriostatic*, which means they prohibit bacteria and algae from growing or developing within the system.

9. What type of filtration mediums do you use in the top tank of the EQ-300-WELL? — The EQ-300-WELL top tank contains a KDF-85 medium (A mixture of 85% copper and 15% zinc mineral alloy) for the reduction of chlorine, hydrogen sulfide and heavy metals like iron, as well as a crushed mineral filter stone to enhance the water's pH and control scale on internal plumbing. Both media are bacteriostatic, which means they prohibit bacteria and algae from growing or developing within the system.

10. What is KDF? — KDF stands for kinetic degradation fluxion, which is a redox filtration medium. KDF uses a unique combination of copper and zinc that creates an electrochemical reaction. During this reaction, electrons are transferred between molecules, creating new, harmless molecules and compounds. Free chlorine, for instance, is changed into benign, water-soluble chloride, which is then carried harmlessly through the water supply. Similarly, some heavy metals* such as copper*, lead*, mercury* and others, cling to the medium's surface, thus being effectively removed from the water supply.

11. What type of medium is used in the bottom tank of the EQ-300 — The EQ-300 bottom tank contains a carbonized coconut shell medium that reduces synthetic chemicals* and VOC's*.

12. What type of medium is used in the bottom tank of the EQ-300-Well? — The EQ-300-WELL bottom tank contains a carbonized coconut shell & catalytic medium that reduces synthetic chemicals, hydrogen sulfide gasses and VOC's.

13. What percentage of chlorine do Aquasana Whole Home Systems remove? And for how long? — The EQ-300 is certified by NSF International to reduce >97% of chlorine for 300,000 gallons.

14. Does either the EQ-300 or EQ-300-WELL remove calcium? — No. The KDF medium in the top tank of these systems change the structure of calcium into a form of calcium called aragonite, which has trouble sticking to the inner walls of plumbing and therefore reduces the possibility of scale buildup in plumbing.

15. What is the flow rate of the EQ-300? — All Aquasana Whole House Systems perform at 7 gallons per minute (gpm).

16. Will I experience a drop in water pressure after installing the EQ-300 or EQ-300-WELL? — As long as your home is less than 3500 sq. ft. and you have 3-1/2 bathrooms or fewer, you should not experience any noticeable drops in pressure. If you have a larger home, we can build a custom system to deal with the typical water capacity of your home.

17. What is chloramine, and does the EQ-300 remove it? — Chloramine is a disinfection agent used as an alternative to chlorine in some city water treatment facilities. They use chloramines for two big reasons: (1) chloramine is less reactive, so it does not create as many disinfection by-products as chlorine, and (2) chloramine is more persistent, and remains in the treated water through the distribution network all the way to the taps in the homes the treatment facility serves. The EQ-300 is certified for the removal of chlorine, and the process of removing chlorine is similar in most respects to the process used to remove chloramine. The key difference is that chloramine exhausts the standard activated carbon in the bottom tank of the unit quickly, making the EQ-300 a little less effective at removing it*. For customers with chloramine in their water, we upgrade the media in the bottom tank of the EQ-300 to a catalytic activated carbon, which has a higher surface point. This type of activated carbon is able to handle the aggressiveness of the chloramine for a longer period of time than the standard coconut shell carbon used in the bottom tank of the standard EQ-300. The part number for this system upgrade is EQ-300C, and it is available for purchase by calling the Aquasana Water Specialists at 866.662.6885.

18. Does the EQ-300 remove bacteria or viruses? — No, if you are concerned about bacteria or viruses in your water supply, we recommend that you add a 0.35-sub-micron post-filter and an ultraviolet light sanitation system after the EQ-300. The AQ-UV-20 ultraviolet light sanitation system uses ultra violet radiation to sanitize drinking water as it passes through the system, which changes the DNA structure of microbiological contaminants and some cysts. UV light radiation also prevents bacteria and viruses from reproducing, and microbiological contaminants cannot survive without constant reproduction.
Important Note: The AQ-UV-20 will not sanitize properly without a sub-micron filter. If sub-micron filter is not used before the UV system, microbiological contaminants can hide behind microscopic particulates, which will cause the UV radiation to lose its effectiveness. This is known as a shadowing effect. A 0.35-sub-micron filter must be used before the UV system to prevent the shadowing effect.

19. Does the EQ-300-WELL remove bacteria or viruses? — Yes, the EQ-300-WELL sanitizes the water with its AQ-UV-20 ultraviolet light sanitation system in the last stage of the unit setup. The AQ-UV-20 ultraviolet light sanitation system uses ultra violet radiation to sanitize drinking water as it passes through the system, which changes the DNA structure of microbiological contaminants and some cysts. UV light radiation also prevents bacteria and viruses from reproducing, and microbiological contaminants cannot survive without constant reproduction.
Important Note: The AQ-UV-20 will not sanitize properly without a sub-micron filter (which is included in the EQ-300-WELL setup). If sub-micron filter is not used before the UV system, microbiological contaminants can hide behind microscopic particulates, which will cause the UV radiation to lose its effectiveness. This is known as a shadowing effect. A 0.35-sub-micron filter must be used before the system to prevent the shadowing effect.

20. Do I need a licensed plumber to install the EQ-300 or EQ-300-WELL? — Yes, Aquasana recommends you have a licensed plumber install the system for you, to ensure that the system is installed properly. Since most licensed plumbers carry insurance to cover any damages caused by an installation error, having a licensed plumber install the system for you will give you the security that the work was done properly and that the installation is backed up by the plumbing company's insurance plan. Not having the system installed by a licensed plumber will void the warranty of both the EQ-300 and EQ-300-WELL.

* Not part of NSF certification