Best Negative Ion Generators Reviewed

Tyler Winship
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There’s a growing number of people suffering from Electromagnetic Hypersensitivity (EHS) and the main culprit is thought to be our modern wireless society which exposes us to numerous sources of electromagnetic radiation or EMF in our environment.

One solution is to change your bedroom and sleep in the basement or attic. You could also try sleeping in a tent which helps eliminate outside sources of EMF.

Alternately, you could try a negative ion generator. The jury’s still out on whether they really work or not but at least they’re never going to kill you. (There’s only a slim chance of that from a defective one anyway.)

Here’s a review of the best negative ion generators so you don’t have to get electrocuted to get one.

Green Air Encore HEPA and Odor Fighting Filter Air PurifierBest OverallGreen Air Encore HEPA and Odor Fighting Filter Air Purifier
AirTamer A310Budget PickAirTamer A310
Biota Bot Air PurifierUpgrade PickBiota Bot Air Purifier

1. Green Air Encore HEPA and Odor Fighting Filter Air Purifier

Our rating: 9 / 10

Green Air Encore HEPA and Odor Fighting Filter Air Purifier

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  • Well built
  • Works quietly
  • Compact and light-weight
  • Fits nicely in bedrooms
  • Great air purifier
  • Superior Usability

First on our list is the Green Air Encore HEPA and Odor Air Purifier. It comes with iONcluster Technology that generates negative ions to improve air quality in your home or office. The negative ions eliminate dust, pet dander, pollen, mold, and any other airborne particles.

This air purifier will improve airflow in your room by eliminating particles one micron and above. It removes 99.97% of airborne particles. It uses a HEPA filter that is certified to reduce particles in air of about 0.3 microns. This air purifier has an activated carbon filter that traps odor causing particles, and releases clean air.

The Green Air Encore HEPA and Odor Air Purifier comes with a sleep timer that automatically shuts off the unit after about 8 hours to allow you to enjoy over night sleep uninterrupted. It is compact and lightweight making it easy to use in any room.

2. Biota Bot Air Purifier

Our rating: 9 / 10

Biota Bot Air Purifier

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  • Pre-assembled and ready to use
  • Quiet and efficient
  • One-year limited warranty

The Biota Bot Air Purifier with ionizer is designed for room or office sizes up to 860 square feet.

This benefits include three modes of operation, including HEPA, radiation and negative ions. The high-rate negative ions removes airborne contaminants, especially in large spaces and recirculate air as much as 10 times per hour. No filters needed, and it’s pre-assembled, so it’s ready to use right out of the box. Comes with a one-year limited warranty.

This device is equipped with negative ion-producing ultra-violet lamp, air purifier and ozone LED lamp, using a UV lamp in the top, there are three modes of operation: radiation mode, negative ions mode and ozone mode.

3. Ivation 5-in-1 HEPA Air Purifier & Ozone Generator

Our rating: 8 / 10

Ivation 5-in-1 HEPA Air Purifier & Ozone Generator

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  • Includes UV Light
  • Has many advanced features
  • Five in-one function
  • Large area covered
  • Quiet operation
  • Value for money


  • A bit pricey
  • Can’t be used with high blood pressure patients

One of the best negative ion generators on the market, the iVATION Air Purifier comes with five in-one flexibility. This includes air purification, odor removal, deodorization, air sterilization, and the UV light to kill airborne bacteria and virus.

You have the option to choose from the four different settings, depending on your specific needs. These include the low and high fan settings, the pure air blast, and the turbo air filter option.

What’s not to love about this set? It’s a 5-in-1 unit, which means that you have more than one function. In this case, you can choose to convert it into an ionizer, air sterilizer, air deodorizer, and carbon filter. The iVATION is also loaded with many advanced features, including a large HEPA filtration system.

4. AirTamer A310

Our rating: 8 / 10

AirTamer A310

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  • Lightweight and portable
  • Works off USB power
  • Easy to use
  • It’s got an affordable price
  • Suitable for high-quality filtering
  • The different color options makes it stand out
  • Fits in almost all spaces

Pro : * Personalized Negative Ionization – The A310 – Portable Air Purifier uses a single compact fan to generate a powerful negative ionization field that is directly connected to your body. This feature creates a personalized negative ionization field that improves how individuals feel due to its ability to neutralize a wide variety of harmful airborne pollutants. This customized ionization field, that is felt directly on your body, helps reduce allergies and asthma, decrease stress, and improve overall breathing. The negative ionization field produced by the A310 is comparable to being in an ocean breeze or mountain stream.

Con : Several users have stated that unless you’re willing to pay a large amount of money for your air purifier, you may want to consider a different machine. The Pure Enrichment A310 does have many positive aspects, such as being portable and having a small footprint, but it’s simply not powerfully enough to thoroughly clean the room.

5. Biota Bot #MM108 Desktop Air Purifier True HEPA Ionic Air Filtering System

Our rating: 6 / 10

Biota Bot #MM108 Desktop Air Purifier True HEPA Ionic Air Filtering System

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  • * A 5-stage ionizer that deals with bacteria
  • mold
  • viruses
  • dust
  • and pet odors * Automatically adjusts its settings according to the environment * It’s lightweight
  • allowing you to easily move it around the house * Ultra quiet


  • * The many different buttons can be confusing to use for a first time user * Some users complained about it being too noisy

Bacteria, Bad Smells, and Virus.

The Biota Bot Air Purifier claims to have five different stages of air purification, which include negative ions, activated charcoal, carbon filter, HEPA filter, and static electricity dispersion to get rid of smoke, pet smells, dust, and more. And they all work in conjunction to filter the air inside your room.

The Ionic air purifier is compact, and has a slim profile, although it’s a little heavier than initially expected. The design is sleek, and the brushed nickel finish gives it a sophisticated and modern look. The button controls are touch sensitive, and you can easily toggle through the automated modes with the touch of a button, or if you prefer, manually adjust the sensitivity of the fan speed, air quality indicator, timer, etc.

6. Twin Air Pro Negative Ion Generator / Ionizer

Our rating: 3 / 10

Twin Air Pro Negative Ion Generator / Ionizer

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  • Effective ionization
  • Dimmable LED light
  • Untreated recycled wood casing
  • Choice of three different fragrances: lemon, peppermint (our favorite), and forest
  • Works well as a nightlight

Frequently Asked Questions (FAQ)

Do negative ions make you feel better?

So what are negative ions, anyhow? They are atoms or groups of atoms with one or more extra electrons, which causes them to have a negative charge. They are created by the neutralization of oxygen and some other chemical elements by natural processes like sunshine, waterfalls, and even the human body (via breathing and perspiration).

Negative ions have been said to have myriad health benefits, including fighting fatigue, eliminating odors, improving sleep, treating depression, and even fighting cancer. There hasn’t been a lot of objective scientific research to back these claims up, but some doctors and researchers do endorse their general positive mood-boosting properties.

Can negative ions be harmful?

When you are exposed to a high concentration of negative ions, you can become dizzy and even experience mild headaches. For this reason, negative ion generators should be placed in well-ventilated areas. If you start to feel sick from being in an area that has a negative ion generator, simply leave and go into an area that does not have the generator.

Negative ion generators are very useful for anyone who experiences seasonal allergies or asthma. In addition, negative ions can promote a sense of well being, allowing you to be more productive and creative throughout the day.

What is the best ionizer?

The best ionizer for home use is the Sharp Co-YH300W 3-stage negative ion air purifier. It eliminates many airborne particles and eliminates bad odors, creating a better air quality. For a more powerful generator, the Sotaire Oxygenics xtremefair Air Ionizer is clear winner as it produces more negative ions per minute than any other ionizer on the market today!

Do air ionizers really work?

Yes, they really do. But not all ionizers are created equal. Many of the claims of ionizers are simply not true. Others are only partially true.

There are several claims about air ionizers that are completely obvious to anyone with a bit of mechanical understanding. For example, “ionizers help keep the air around you purified” is certainly not true. The positive ions are simply neutralized by adding electrons from the surrounding environment, or they are simply attracted to neutral objects. Neither of these effects is particularly noticeable in our surroundings.


We had the opportunity to review many buying options that fit various budgets, so take what is useful to you from our presentation. Just have a good time while shopping, and you will be done before you know it. It's a simple process that will allow you to narrow down the best possible option available to you in an efficient manner.

Our Recommendation

Green Air Encore HEPA and Odor Fighting Filter Air PurifierBest OverallGreen Air Encore HEPA and Odor Fighting Filter Air Purifier
AirTamer A310Budget PickAirTamer A310
Biota Bot Air PurifierUpgrade PickBiota Bot Air Purifier