The 7 Best Water Ionizers: Reviews & Ultimate Guide


This is our review of the best Water Ionizers of 2023.

We reviewed several water ionizers and found out that the Tyent ACE-13 Water Ionizer is the best one overall.

There are several factors to look for when buying a water ionizer and to save you time we spent long hours reading & researching to find out the best overall water ionizer. And because there isn’t a one size fits all because each family has its unique situation, we also identified the best option for different situations.

You will find out the best water ionizers available today, their pros and cons, an explanation of why they are better for specific situations, and a complete buying guide with all the relevant information that you need to know to choose the best water ionizer system for you.

Let’s get started!

Our Top Picks for Best Water Ionizers

7 Best Water Ionizers Reviewed

After investing our time researching and reviewing several water ionizers, we identified the 7 best options for different purposes.

We’ve invested the time so you don’t have to:

  • Best for: Overall
  • Dimension: 11.8 x 5.3 x 13.8 inches
  • Weight: 11 pounds
  • Filter Longevity: 950 gallons (6 months)
  • ORP Capacity: -1.150mV
  • pH Range: 1.7 to 12.5
  • Plates: 13
  • Warranty: Lifetime

In our view, the Tyent ACE 13 Water Ionizer is the best overall water ionizer available in the market. This high-end device comes with 13 hybrid plates for maximum efficiency, dual ultra-filtration capabilities, an auto-clean option, and a touch screen with several features.

The Tyent ACE 13 Water Ionizer is designed with medical-grade solid/mesh hybrid plates, which are more durable and have an extensive area that allows a more efficient process. This allows the device to produce great-tasting alkaline water that is full of antioxidant properties.

And this water ionizer comes with an in-built filtration system that is top of the class. Its Dual 0.01 Micron Dialapure Filters removes around 200 harmful water contaminants like chlorine, rust, sediments, VOCs, and more.

The Tyent ACE 13 Water Ionizer is packed with great features, such as:

  • Capacitive touch screen to allow quick and seamless operation
  • JOG dial interface that lets you choose different water pH modes for you and your family
  • Auto-fill quantity selector to stop the water flow when the cup or pitcher is full
  • Configurable auto-clean option so that you don’t have to manually clean it
  • Replacement filter indicator alarm to let you know when it’s time to change the filter

And if all of these weren’t enough, the manufacturer offers a 75-day satisfaction guarantee that allows you to return the water ionizer if you are not satisfied, and a lifetime warranty which shows the trust they have in their product.


  • 13 hybrid plates for maximum efficiency
  • Large pH range
  • Auto-cleaning ability
  • Dual micro-filtration
  • Featured-packed touch screen
  • 75-day satisfaction guarantee
  • Lifetime warranty


  • Price
  • Best for: Overall (Runner-up)
  • Dimension: 11.1 x 15.2 x 5.3 inches
  • Weight: 11 pounds
  • Filter Longevity: 1000 gallons
  • ORP Capacity: -950mV
  • pH Range: 2.7 to 11.5
  • Plates: 9
  • Warranty: Limited Lifetime

The Aqua Ionizer ionHealth is one of the best water ionizers available. This top-of-the-class water ionizer gives you flexibility as it can be installed on the countertop or under the sink, comes with a smart faucet, and has a lifetime warranty.

The Aqua Ionizer ionHealth comes with dual NSF-certified filters that can remove up to 99.9% of water contaminants. The system includes a reminder to let you know when it is time to change the filters.

This system also includes a smart faucet that controls the water ionizer and lets you select the type of water you want to drink. The system can be installed on the countertop or under the sink, giving you the flexibility to choose the way that better suits your needs.

The Aqua Ionizer ionHealth includes some nice and modern features, like automatic cleaning, LCD control, touch smart faucet, which gives you more control of the system.

This device comes with a lifetime limited warranty, which should give you peace of mind if you decide to invest in this product.


  • Smart faucet included
  • Auto-cleaning ability
  • Large pH range
  • Dual micro-filtration
  • Flexibility to be installed under the sink or countertop
  • Lifetime limited warranty


  • Price
  • Filters longevity
  • Best for: Value
  • Dimension: 16 x 12.75 x 8.5 inches
  • Weight: 12.65 Pounds
  • Filter Longevity: 1000 gallons
  • ORP Capacity: -900mV
  • pH Range: 3 to 11.5
  • Plates: 9
  • Warranty: Limited Lifetime

The Aqua Ionizer Deluxe 9.5 is the best value choice for a water ionizer. Not as feature pack as the previous options, but it also comes with half the price of the top choices. But it still has great features, like a wide and adjustable pH range, auto-cleaning mode, allows 7 water mode settings, and comes with a lifetime warranty.

The Aqua Ionizer Deluxe 9.5 comes with 9 platinum-coated titanium long-lasting plates making the electrolysis process more efficient. It also allows a wide pH range to choose from, which goes from 3 to 11.5.

Another great feature of this water ionizer is its ability to self-clean so that you don’t have to do it manually and it will extend the life of the device.

The Aqua Ionizer Deluxe 9.5 comes with a limited lifetime warranty, so you don’t have to worry about this purchase in the future.


  • Wide pH range
  • Auto-cleaning ability
  • Large pH range
  • Lifetime limited warranty
  • Easy to install


  • Some customers complained about the touchscreen responsiveness
  • Best for: Good Choice
  • Dimension: 5.25 x 4.3 x 13 inches
  • Weight: 10.45 pounds
  • Filter Longevity: 1.000 gallons
  • ORP Capacity: -800mV
  • pH Range: 4.0 to 11
  • Plates: 7
  • Warranty: 5-year warranty

Another good choice for a water ionizer is the Aqua Ionizer Deluxe 7.0. This affordable water ionizer comes with a carbon filter that can last for one year, a 5-year warranty, an auto-cleaning feature, an LCD screen that allows you to customize up to 7 water modes, and can generate water with pH from 4 to 11.

The Aqua Ionizer Deluxe 7.0 has 7 plates of plated coated titanium, which are durable, efficient, and allow the generation of good quality alkaline water, with pH that can go up to 11 and ORP up to -800.

This device includes an efficient carbon filter with good longevity, as it can last around one year and filter around  1.000 gallons of water.

The Aqua Ionizer Deluxe 7.0 includes some nice features, like the option to configure up to 7 water modes to let you choose the pH water modes that you use the most, self-cleaning ability to ensure the plates are cleaned after a predefined usage, and a backlit LCD to make all these customizations.

The manufacturer of this water ionizer offers a 5-year warranty, which shows the trust it has in its product.


  • Price
  • Good pH range
  • Customizable water modes
  • Good carbon filter longevity
  • Auto-cleaning ability
  • Easy to install


  • Can only be installed on the countertop
  • Doesn’t have as many options as more modern versions
  • Best for: Budget
  • Dimension: 6.69 x 4.33 x 10.16 inches
  • Weight: 3.30 pounds
  • Filter Longevity: 2114 gallons 
  • ORP Capacity: -500mV
  • pH Range: 3.5 to 10.5
  • Plates: 5
  • Warranty: 1 year

The best budget choice for a water ionizer is without a doubt the AquaGreen Water Ionizer. This device combines a great price and top features of a good water ionizer, like self-cleaning, good pH range, ability to set different water modes, and includes a durable water filter.

The AquaGreen Water Ionizer has 5 plates which are enough to generate water with a wide pH range from 3.5 to 10.5, but the ORP range can only go down to -500mV, while not bad it still isn’t as good as other options we have in our top list.

This water ionizer includes an in-built carbon water filter capable of removing several contaminants from the water before it starts the electrolysis process, which is good to deliver clean and alkaline water.

The AquaGreen Water Ionizer has a much lower price than other water ionizers, but it still includes several modern features like the ability to define up to 7 water modes to allow you to choose water with a specific pH for different situations, auto-cleaning ability to ensure the machine is effective and last long, and an LCD to let you know the current information of the system.

It only comes with a 1-year warranty, which, not being bad, is not as good as other more expensive options that include a lifetime warranty.


  • Price
  • Good pH range
  • Customizable water modes
  • Good filter longevity
  • Auto-cleaning ability


  • ORP range
  • Just 1-year warranty
  • Some customers complained about the quality of the materials
  • Best for: Under Counter
  • Dimension: 11.8 x 13.9 x 5.3 inches
  • Weight: 11 pounds
  • ORP Capacity: -1.150mV
  • pH Range: 1.7 to 12.5
  • Plates: 13
  • Warranty: Lifetime

Tyent has another great model, this one an under-the-counter water ionizer, that for us is the best in this category: the Tyent UCE-13 Plus Under Counter Water Ionizer. This modern water ionizer machine has the same great specifications as the ACE-13 model, like 13 hybrid plates, dual ultra-filtration capabilities, auto-cleaning option, and much more.

The Tyent UCE-13 Water Ionizer comes with 13 platinum-coated titanium hybrid solid/mesh plates which are highly durable and efficient, allowing to generate water with a high range of PH and ORP.

This device also includes an in-built dual ultra-filtration system, capable of removing harmful contaminants such as chlorine, organic and inorganic components, to ensure that the alkaline water you drink is also clean and free of contaminants.

One of the differentiator factors of the Tyent UCE-13 Water Ionizer is its sleek and modern design: it is an under the counter machine with a special faucet with a full touch screen system that allows you to control different factors of the system, like the water mode you want or the self-cleaning ability.

And like other Tyent products, this water ionizer includes a 75-day satisfaction guarantee and a lifetime warranty, demonstrating once more how much they trust the quality of their products.


  • 13 hybrid plates for maximum efficiency
  • Large pH range
  • Auto-cleaning ability
  • Dual micro-filtration
  • Under the counter design
  • 75-day satisfaction guarantee
  • Lifetime warranty


  • Price
  • Not easy to install
  • Best for: Dispenser
  • Dimension: 11 x 5.5 x 12.5 inches
  • Weight: 13 pounds
  • Filter Longevity: 600 gallons
  • ORP Capacity: -450mV
  • pH Range: 9 to 9.5
  • Warranty: 1 year

The Pure Hydration Alkaline Water Ionizer is a good choice if you are looking for a dispenser water ionizer. This water ionizer can deliver alkaline water at the touch of a button without having to be connected to electricity, and comes with an ultra-filtration system included ensuring that the water is also free of contaminants.

The Pure Hydration Alkaline Water Ionizer produces water with a pH level of 9 to 9.5, and ORP from -400 to -450 mV. While this pH is good for alkaline water, it doesn’t allow you to customize the range like other water ionizers.

It also includes an ultra-filtration system that can remove more than 220 common water contaminants like chlorine, lead, mercury, pesticides, etc.

The Pure Hydration Alkaline Water Ionizer doesn’t need to be connected to electricity to work like other water ionizers, which gives you more flexibility to install it when it better suits you.

It comes with a 30-day money-back guarantee and a 1-year warranty, which is not as good as other water ionizers that have a lifetime warranty. But if you decide to subscribe to their 6-month auto-refill service for filters, you will have a lifetime warranty on this machine.


  • Price
  • Dual ultra-filtration system
  • Doesn’t require electricity
  • Dispenser design
  • Easy to install


  • Limited pH and ORP range
  • Can’t customize water PH
  • Some customers complained about the on/off button

Buying Guide for Water Ionizer

There are several factors to take into consideration when buying a water ionizer, and with so many options available in the market, it is not a simple task to make the right choice for you and your family.

That is why we present a curated selection of the best water ionizers for different situations, and we also created a comprehensive buying guide for water ionizers so that you can understand the most important factors and be able to make the best purchase decision.

What to Consider When Choosing the Best Water Ionizer

When researching for a water ionizer to buy, these are the key features that you should consider:


Buying a water ionizer is not cheap, and you should consider the cost associated with it before you buy it, to ensure you make the right choice.

There are different water ionizers in the market, and the price range is big, as they can go from $500 to $5.000, depending on several factors.

That is why it is important to decide your budget and the factors that are important to you, to choose the right option for your needs and budget.

pH Range

The biggest feature of a water ionizer is its ability to change the pH of the water, and be able to generate alkaline water.

The pH scale goes from 1 (very acidic water) to 14 (very alkaline water), being 7 considered neutral water.

The best water ionizers allow you to change the pH in a large range, to let you generate water more acidic with lower pH that is useful for cleaning, and water more alkaline with higher pH for drinking and cooking.

ORP Range

ORP, or oxidation-reduction potential, is the capability of a water ionizer in reducing oxidation levels. A lower ORP value means that the water should be more healthy to drink.

The theory is that by reducing the oxidation level of the ionized water, fewer free radicals that cause oxidation will be present in the water, and less damage would be caused in your body.

Number of Plates

Plates are essential in a water ionizer because they are used to convert acidic to alkaline through the electrolysis process.

The more plates a water ionizer has, the more effective it will be at producing alkaline water with a lower (and better) ORP value.

You will find water ionizers with plate counts that can range from 5 to 11 plates, so depending on the number of plates, the higher number typically is better but also more expensive.

Countertop  vs Under Counter Water Ionizer

This is an important factor because depending on the space that you have available in your kitchen, you might decide from the start if you want to look for a countertop or an under the counter water ionizer.

If you don’t have much countertop space, you might want to go for an under counter water ionizer, but if you don’t have much space available under the counter, you will need to go for a countertop unit and you need to make sure it fits in the available space.

In-built Water Filter

Water Ionizers will typically have filtration systems to remove harmful water contaminants and produce clean water.

Different filters will be able to remove different types of contaminants, so it is important to know which contaminants you need to deal with, to ensure you choose the water ionizer with the right water filter in it.

You can check the contaminants of your water in different ways: by checking the CCR of your water provider or by checking the water of your home by yourself, using a  water test kit.

Filter Longevity

As mentioned in the previous topic, water distillers will have in-built water filters, and they won’t last forever because they can only filter a determined amount of water.

So you will need to replace the filter cartridge of your water ionizer from time to time, and that activity will be determined by the longevity of the filter.

The ideal solution would be a combination of good longevity and decent price, to not have to change the filter quite often and minimize the recurring cost of changing the filter.

Easy Installation

Water ionizers are not as difficult to install as other types of water filters, so you should be able to do it by yourself.

Then, the installation complexity will also depend on the type of water distiller you choose. A countertop water distiller installation process is straightforward, the installation process of an under counter water distiller is slightly more complex and you might need to use some tools, but you should be able to do it anyway.

Warranty & Support

Purchasing a water ionizer is a big investment, so you should choose a device with a good warranty and support to give you the trust when doing this purchase.

An extended warranty also means that the manufacturer trusts the quality of its product, which is a good indication.

Good support is also important because it might have some questions or issues with your water ionizer, and it’s good to have someone to help you with this.

What is a Water Ionizer?

Put it simply, a water ionizer is a machine that allows you to change the pH level of the water. This type of device uses the electrolysis process to separate the water into alkaline and acidic streams.

People use this to get alkaline water (water with higher pH) to drink, which is known to bring some health benefits and for being tastier than acidic water.

A water ionizer can also produce acidic water that can be used for cleaning, disinfection, and sterilization purposes.

What is Alkaline Water?

Water pH can vary from 0 to 14, and water with a pH level of 7 is known as neutral, water with a pH lower than 7 is known as acidic, and water with a pH higher than 7 is considered alkaline.

So alkaline water is water with a higher pH, and it is believed to have benefits to our health, reducing the harmful effects on oxidation in our body.

Differences Between Alkaline Water and Regular Water?

The main difference between alkaline water and regular water is its pH level. Typically regular water has a pH of 7, and alkaline pH levels can range between 8 and 9.

Alkaline water usually has higher levels of minerals such as calcium, magnesium, sodium, and potassium which are beneficial for you. And it is also known for having a sweeter taste than regular water, which some people prefer.

How Does a Water Ionizer Work?

As mentioned before, a water ionizer is capable of altering the pH of the water through the electrolysis process.

When the water enters the water ionizer this device uses its charged plates to separate the magnesium and calcium minerals from the bicarbonates, creating two different streams of water, one alkaline stream with the magnesium and calcium minerals, and an acidic water stream with the bicarbonates.

The water ionizer is connected directly to your faucet and has a diverter to pass the water through the machine when you need alkaline water, and the acidic water stream that is not used is discarded through a hose into the kitchen sink.

Water Ionizer Benefits

Ionized or alkaline water produced by a water ionizer has some advantages, such as:

Improve Water

Ionized water is a bit sweeter than regular water, and this taste is preferred by many. Of course, it is a personal preference, but typically people prefer the taste of alkaline water.

Several Health Benefits

Alkaline water is said to have several benefits, but not all of them are scientifically backed up, so we are going to list them with this caveat, and try to mention studies that sustain a specific benefit when we found them:

  • Reduces acid reflux: Some studies prove this benefit of alkaline water, as it was found that water with a pH of 8.8 inactivates an enzyme that is known to be linked to acid disease [1]
  • Better hydration: Another benefit of alkaline water is that due to its minerals it hydrates better because the water is easily absorbed by the body. Some studies start positively testing this theory [2]
  • Reduces bone loss: The high level of minerals like calcium and magnesium of alkaline water contribute positively to the deceleration of bone, as some studies have shown [3
  • Contains antioxidant properties: Some people claim that due to the low ORP levels and oxidizing agents of alkaline water, it has antioxidant properties which are good for our health. Some studies have shown benefits in animals, for now [4, 5]
  • Colon-cleansing properties: Other studies have shown positive impact of drinking alkaline water in the way our colon works [6, 7]
  • Improves skin health
  • Helps weight loss

Water ionizer Disadvantages

Water ionizers also have some disadvantages, such as:

Focus is Not to Remove Contaminants

Unlike other water filters that remove contaminants from the water, water ionizers just change the water pH, but won’t clean it. Some will have an in-built water filter that can remove some contaminants, but may not remove the contaminants that you need to deal with.

So if you need to remove certain contaminants from your water, you should buy a water filter that is capable of removing or reducing the amount of these contaminants.


Water ionizers are expensive devices, and some of them can cost more than one thousand dollars. So, make sure it makes sense for you to make a significant investment in one of these devices.

Water Ionizer Installation

A water ionizer is not extremely complex to install, you just need to connect it you your faucet. You should follow the manufacturer’s instructions, but usually, this type of device can be installed in a few steps, as listed below:

Step #1 – Turn off the water:

The initial step to installing a water ionizer is to turn off the main water source and drain the water from the system.

Step #2 – Choose the water ionizer location:

Then, you need to choose where you want to install the water ionizer. Make sure you select a place with enough room to install it, and that you choose a place near the kitchen sink and which you can access easily.

Step #3 – Connect the faucet diverter:

Next, connect the faucet diverter that will allow you to choose if you want the water to run normally or if it should be diverted to the water ionizer.

Step #4 – Prepare the water ionizer:

Using the manufacturer’s guide, make sure the water ionizer is prepared and all the assembly and connections are done.

Step #5 – Connect the diverter to the water ionizer:

I snow time to connect the installed faucet diverter to the water ionizer. Use the plastic hose to link the faucet diverter to the water ionizer.

Step #6 – Test it:

In the last step, you want to check if everything is working properly. So, just turn on the power and then the water and check if there are no leaks, and that everything is working as expected.

Water Ionizer Maintenance

Water ionizers are easy to maintain, and there are basically two activities that you might need to do:

Water ionizer filter replacement:

If your machine has an in-built water filter you will need to replace it from time to time, usually every 6 months, but check the manufacturer’s guidelines and swamp it according to the defined timelines.

This is a straightforward activity that will only take you a few minutes. You just need to take out the old filter, replace it with the new one, and flush it before using the machine.

Water ionizer internal cleaning:

A Water ionizer should be cleaned with some periodicity to avoid performance degradation and maximize its longevity.

Some water ionizers have a self-cleaning feature that will save you from having to do this task manually. But if you have to do this activity manually, make sure you follow the manufacturer’s instructions to avoid any issue with the machine.

FAQ About Water Ionizers

Here are some answers to frequently asked questions about water ionizers.

What is the cost of a water ionizer?

The price of a water ionizer can vary a lot, depending on several factors like brand, longevity, quality, pH range, ORP range, number of plates, etc.

You will find water ionizers from $500 up to $5.000, a wide price range.

Can I install a water ionizer myself?

Usually yes, as water ionizers are not difficult to install.

Even if you are not great at doing these types of manual activities, water ionizers can be installed in a few steps. Just make sure you follow the detailed instructions provided by the manufacturer of your device.

Can I still use my tap water when I connect a water ionizer to my faucet?

Absolutely! When you connect a water ionizer to your faucet it has a diverter that lets you choose if the tap water flows directly from the faucet or if it goes through the water ionizer.

Why do some water ionizers let me change pH levels?

First, because water ionizers also allow you to generate acidic water, that can be useful for other purposes different from drinking, like cleaning or disinfection.

Then, even when you want to drink alkaline water, you might want to start increasing the water pH slowly to get used to its flavor.

Another reason is that different people might preferer distinct levels of alkalinity, so if you have more people in the same household, each one can adjust the water ionizer to produce alkaline water according to their preferences.

How many plates should a water ionizer have?

There is no right number of plates, but it’s important to understand what a higher number of plates does.

The higher the number of plates of a water ionizer, the powerful it is, so the ionization process will be better and quicker.

That being said, typically the price also increases with the number of plates, so it is important to find the right balance for your needs and budget.

Can my pet drink alkaline water?

Yes! Pets can drink alkaline water as humans can.

How long does ionized water stay ionized?

Usually, ionizer water stays ionizer for 18 to 24 hours, as after this period it starts losing its antioxidant properties.

Can I store alkaline water?

Yes, you can store it in a glass or BPA-free plastic container or bottle, if well isolated.

But as mentioned above, it will lose its antioxidant properties in 18 to 24 hours, which will impact its quality if you drink after this period.

Can I use a water ionizer in an RV?

Yes! YOu just need to make sure you have enough space for the water ionizer machine, and that you can plug it into a power source.

The connection to the faucet can be easily done and undone, so you can move from your house to an RV easily, and vice versa.

Our Verdict

Alkaline water has several benefits to your health, and the best way to get it using a good water ionizer machine.

After reading our guide you should know by now the most important factors to look out for when buying a water ionizer, and you should also know the best options available in the market, and how they suit different situations.

For us, the best overall choice is the Tyent ACE-13 Water Ionizer, but all the water ionizers we have in our top are great options, so you can’t go wrong with any of them!