Best Ionic Air Purifiers of 2022

How a little negativity can benefit you.

Ionic air purifiers use negative ions to get rid of common airborne pollutants such as dust and allergens, but are they effective? There has been quite a debate going on about whether ionic purifiers are even safe. What is the true science behind it? And what do the experts say?

The best ionic air purifiers use a combination of filters and an ionizer to eliminate pollutants from your air. Are they worth it? Let’s find out.

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Product Comparison Table

Product Image of the Pure Enrichment® PureZone™ Elite True HEPA Large Room Air Purifier, Energy Star Rated, UV-C Light, Air Quality Monitor, 4 Stage Filtration - Helps Destroy Bacteria, Smoke, Pollen & Dust (White)
Best 4-Stage Filtration
Pure Enrichment PureZone
  • Smart technology filter
  • UV-C light included
  • Many health benefits
Product Image of the Fellowes AeraMax 300 Large Room Air Purifier Mold, Odors, Dust, Smoke, Allergens and Germs with True HEPA Filter and 4-Stage Purification, White (
Best Two-Stage Filtration
AeraMax 300 Air Purifier
  • Effective carbon filter
  • Plasmatrue technology
  • High-performance mode
Product Image of the Airthereal APH260 Air Purifier for Home, Large Room-True HEPA Filter with UV and Auto Modes-Removes Allergies, Dust, Smoke, and Odors, 152 CFM, Pure Morning
Best for Medium-Sized Rooms
Airthereal Pure Morning Air Purifier
  • Smart features
  • Timer
  • UV-C light and ionizer

What Is an Ionic Air Purifier?

An ionic air purifier comes in different variants. The most popular, and effective, is a filter purifier with a built-in ionizer. Here, the ionizer function is usually optional.

An ionizer works by emitting negative ions into the air. These electrically change the molecules present in the surrounding atmosphere. Negative ions bind to positive ions, such as dust, pollen and bacteria.

When the two bond together, they form dense particles that can’t float in the air. Next, the heavy particles will fall to the ground or the nearest object, such as the couch or bed. You can then remove them by vacuuming, sweeping or wiping the areas.

Manufacturers claim that ionizers are highly beneficial for individuals with severe allergies and asthma. But is this true?

There’s quite a lot of debate on whether ionizers are beneficial or not. Manufacturers claim high effectiveness, but scientific studies have shown otherwise.

Benefits of Ionizers

As there are disadvantages to ionizers, there are also benefits. We strongly believe that whether you’ll find an ionizer beneficial depends on your needs.

Improving Mental Health Conditions

Ionizers are shown to have certain positive effects on our mental health. Research suggests that exposure to negatively charged ions improved certain conditions, such as anxiety and depression (1).

The studies are currently incomplete and inconsistent. Still, it could be a few steps towards helping individuals with mental health conditions.

Use in Hospitals

Ionizers have been shown to have great benefits when it comes to controlling the spread of infections in hospitals. Studies show that these devices significantly alter the electrostatic environment. Moreover, the negatively charged ions also caused bacteria and viruses to be repelled from plastic surfaces (2).

How to Find the Best Ionic Air Purifier

Once you’ve settled on the decision to get an ionic air purifier, here are a few things to consider:


Size plays a significant role in where the unit can be placed and how strong it is. Small air purifiers with ionizers are generally meant to cover small areas. Typically, this means areas ranging between 100 and 200 square feet.

Larger units can cover areas of up to 1000 square feet and more. However, these are also quite cumbersome and require more room.

Useful Features

Ionic air purifiers can be found as simple machines or high-tech cleaners. Here are a few features we appreciate in an ionic air purifier:

  • Fan speed: Different fan speeds are a must-have option, whether it’s two or four speeds to choose between. A faster fan will extract more air at a time, cleaning more efficiently. On the other hand, a lower speed will be quieter and suitable for night use. However, make sure the unit is effective at every speed.
  • Air quality detector: This feature is very useful since it can be difficult to know how much or if your air is polluted. Units with this feature will usually have a color-changing light that indicates how polluted your air is.
  • Filter change indicator: Guessing when it’s time to change the filters can be tricky. Luckily, most units have a solution. Many ionic air purifiers with filters will have a filter replacement indicator to let you know when it’s due.


Ionizers produce negative ions, but how many it produces can be helpful to know. The more negative ions a unit provides, the higher its effectiveness. This can be tricky to figure out as not all manufacturers mention these numbers.

The number is usually displayed as per second, such as 10 million negative ions per second. For an effective ionizer, choose a unit that produces over 3 million ions per second. Although 1 million sounds impressive, it won’t be doing much to clean your air.

Best Ionic Air Purifier Reviews of 2022

Using an ionic air purifier has its benefits and disadvantages; however, it depends on your situation. To find our three best ionizers, we researched the top choices thoroughly to ensure unbeatable quality. Our experts discussed which features were important and how the individual units would perform.

Here are the best ionic air purifiers:

1. Pure Enrichment PureZone Elite Purifier

Best 4-Stage Filtration

With this air purifier, you can enjoy almost perfect air. This machine traps and eliminates 99.97 percent of particles as small as 0.3 microns in size with a four-stage purification system. The four-stage system ensures that everything, including dust, pollen, and allergens, is zapped from the air. In fact, this system also removes germs, fungi, bacteria, and viruses.

We love that this works in small and large rooms. It has a coverage of 190 square feet, cleaning at 120 cubic feet per minute. That’s pretty speedy! So whether you’re using this for a living room, bedroom, office, or another large room — it will be a great choice for a pure home.

The Pros

Smart Technology Filter

Using a true HEPA filter, you may think it will be complicated to use. But that’s not the case. This air purifier has smart technology to let you know when the filter needs replaced. Being activated with carbon and medical-grade true HEPA, you only need to replace it twice a year.

Just Note

Every time you replace the filter, make sure to use a genuine Pure Enrichment version.
Go From Room to Room

With the generous coverage, you may want to move this from room to room. It’s never been easier. Weighing less than 10 pounds and equipped with an easy-lift handle, you can transport this throughout the home with no problem.

Many Health Benefits

What can you expect from this air purifier? Well, it will decrease restlessness, so you’ll wake up feeling more refreshed. It can reduce cold symptoms, and it sanitizes the air which is terrific for people with allergies. Finally, it can eliminate airborne irritants and odors such as dust, pollen, smoke odor, pet dander, and more.

UV-C Light Included

On its own, it sanitizes the air. But the UV-C light goes the extra mile by destroying illness-causing microorganisms with up to 98.3 percent success.

The Cons

Hard to Get Replacement Filters

Considering you’ll need to replace the filters every six months, they should be easier to buy. However, it’s hard to find them online, and if you do, they can be pretty expensive. Perhaps contact the manufacturer before buying to see the best way to get these filters.

Loud Noise Level

You may find this too noisy for your liking. If you like to sleep in silence, then this won’t be welcome in your bedroom. Customers found it irritating. However, if you like white noise, then this will be a good purchase for you!

Additional Specs

Size 9 x 7 x 25 inches
Recommended Room Coverage 190 square feet
Additional Features Smart technology, easy lift handle, built-in UV-C light
Types of Filters Activated carbon, true HEPA, UV-C light, ion release
Filtration Stages Four-stage

2. AeraMax 300 Air Purifier

Best Two-Stage Filtration

If you or another person in your house is dealing with allergies or asthma, this unit may help. It features a True HEPA filter that effectively removes up to 99.97 percent of airborne pollutants and allergens. Tiny dust mites and pet dander won’t escape the fine filter.

To keep dust out of the air, the ionizer releases negative ions that make dust too heavy to float. It also produces no ozone, so you and your family will only have clean air to enjoy. The purifier is certified by Allergy Standards as well as the Asthma and Allergy Foundation of America, so it’s likely more trustworthy against allergies than other air ionizers.

The Pros

True HEPA Filter

A True HEPA filter is the way to go if you’re dealing with allergies or asthma. It captures even the tiniest particles at the size of 0.3 microns.

The HEPA filter has been protected against the growth of mold or bacteria. It’s coated in an antimicrobial treatment that prevents any of the pollutants it captures from ruining the filter. This helps to extend the life of the filter as well.

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Effective Carbon Filter

If you’re often bothered by odors in your home, the carbon filter can help. The activated carbon will effectively absorb odors from various sources such as pets, cooking and cigarette smoke.

PlasmaTrue Technology

PlasmaTrue Technology releases negative ions that bind to dust particles. The particles are then too heavy to float in the air and will fall to the nearest surface.

Many customers were pleased with this function since it keeps dust out of the air. It does require additional cleaning, but the dust won’t be inhaled as easily.

Good for Large Rooms

This purifier will cover an area between 300 and 600 square feet. It’s excellent for a living room or large bedroom.

High-Performance Mode

For anyone dealing with allergies or asthma, AeraMax has created a high-performance mode. When in this mode, the purifier will work at high speed to quickly remove any impurities that could be bothering you.

Auto Sensor

Knowing how polluted your air is can be tricky. We often end up wasting energy by running the high speed when not necessary.

The auto sensor function will monitor the air quality and then adjust the fan speed. This ensures clean air without wasting energy.

The Cons

High Pitched Noise

When the ionizer is on, you might notice a high pitched noise coming from the unit. Several customers have also noticed this, and although it’s not too loud, it can be annoying. Turning off the ionizer will help.

Additional Specs

Size 8.1 x 16 x 25.1 inches
Recommended Room Coverage 300 to 600 square feet
Additional Features PlasmaTrue Technology, AreaSafe filter treatment, High-performance mode, auto mode, ionizer
Types of Filters True HEPA, carbon
Filtration Stages Two-stage

3. Airthereal Pure Morning 7 in 1 Air Purifier

Best Ionic Air Purifier for Medium-Sized Rooms

For medium-sized rooms, the Pure Morning APH260 is an excellent unit. It features a three-stage filtration system, plus a UV-C light and ionizer.

The display panel features seven touch-buttons to help you set the desired fan speed and mode. There are three fan speeds to choose between, and you can set a 12-hour timer if needed.

Both the UV-C light and ionizer are optional and can be activated from the panel. The ionizer will help to eliminate allergens and dust from the air, while the UV-C light kills bacteria and viruses.

There are a couple of smart modes to choose between. The unit is also fitted with an air quality sensor that helps the purifier to set the fan speed to suit the pollution.

The Pros

Wide Coverage

Although this purifier will only cover 355 square feet, it still has excellent coverage. It draws air in through the sides and front and emits clean air from the top. Airthereal claims that the unit will clean the air of the room in 10 minutes, making it highly efficient.

Smart Features

The APH260 comes with a few smart features to make it even more effective. When needed, you can activate the auto mode — here, the unit will monitor the air and adjust the fan speed accordingly. This feature ensures you get the most out of the unit without wasting energy on high speeds when not needed.

You can always check on the air quality thanks to the Real-Time Air Quality Indicator. The PM 2.5 sensor monitors the air and gives you a number. Numbers below 20 are clean but when it rises above, speed up the fan.

During the night or quiet hours, activate sleep mode. In this mode, the unit sets the lowest fan speed to clean your air quietly. It’s excellent for people who like to sleep in a dark room as there are no bright LED lights.


We can all be a bit forgetful from time to time — luckily, this purifier can help. As you activate it, set the timer to automatically turn the unit off anywhere between one and 12 hours after.

If needed, you can also set the unit to turn on automatically when you need it. This can come in handy if you want it to clean your air before you come home from work or school.

UV-C Light and Ionizer

This purifier will remove a significant amount of impurities from your indoor air. The UV-C light will kill bacteria and viruses by breaking down their molecules.

The ionizer helps to keep dust and allergens out of the air by bonding them with negative ions. You can then easily vacuum or sweep the dust away.

The Cons

Not Super Quiet

Although this purifier is quiet when on low speed or sleep mode, it isn’t as quiet as we’d like. It produces a white noise that is definitely noticeable.

Additional Specs

Size 13 x 6.7 x 21.2 inches
Recommended Room Coverage 355 square feet
Additional Features UV-C light, air quality monitor, auto mode, sleep mode, timer
Types of Filters Preliminary, True HEPA, activated carbon, UV-C light, ionizer
Filtration Stages Three-stage

Ionic Air Purifier Comparison Chart

Product Best Size Coverage (sq ft) Types of Filters Filtration Stages
Pure Enrichment Elite 4-Stage Filtration 9″ x 7″ x 25″ 190 Activated carbon, HEPA, UV-C, ion release 4-stage
AeraMax 300 Air Purifier 2-Stage Filtration 8.1 x 16 x 25.1″ 300 – 600 True HEPA, carbon 2-stage
Airthereal Pure Morning Medium-Sized Rooms 13 x 6.7 x 21.2″ 355 Pre, HEPA, activated carbon,UV-C, ionizer 3-stage

Disadvantages of Ionizers

The promises of ionizers are enticing. Particles such as dust, odors and even smoke are weighed down, eliminating them from the air we breathe. But what happens then?

Creates Dense Particles

As the ionizer releases negatively charged ions, these will be attracted to any positive object. This includes computer screens, TVs and even tabletops.

What the ionizer actually does is it eliminates particles from the air and then drops them on a nearby surface. This means you have to spend more time cleaning the “dropped” particles. After all, they will now be lingering on any positively charged surface.


Although ionizers can remove some airborne particles that can trigger asthma, there are other harmful effects (3). Some ionizers have been shown to produce certain amounts of ozone. You might know ozone as the protective layer of gas that keeps us safe from the strong rays of the sun.

However, ozone can also be harmful. When inhaled, it can cause respiratory issues, and worsen asthma or trigger attacks.

Take Note

Although ionizers don’t intentionally produce ozone, they do so as a by-product of their design and function. Ionizers release small amounts of ozone through the charging process (4).


Ionizers are often marketed towards individuals with allergies with the claim that allergens will be gone. However, when actually put to the test, these devices fall sort of flat.

Ionizers can remove smaller particles such as smoke, but they’re less effective on larger particles like pollen. It turns out, though, that pollen and dust are very common household allergens.

Creating Positivity With Negative Ions

The best Ionic air purifiers come with advantages as well as disadvantages. They work by producing negative ions that bind with positive particles. Once bonded, the particles become dense and too heavy to float. The particles will then fall to the nearest surface.

Despite often being marketed towards individuals with allergies or asthma, studies show that they aren’t as effective as claimed. However, if you don’t have allergies, but a lot of fine dust flying around, you could benefit from an ionizer.

Headshot of Matthew Sullivan

About the Author

Matthew Sullivan

Matthew is a freelance writer with several years of experience in DIY and HVAC. For as long as he can remember, Matthew has always found great pleasure in taking things apart and learning how to put them back together.