Best Filterless Air Purifiers – 2021 Top Picks

| Last Updated: July 21, 2021

Gone are the days when the world only knew of filtered air purifiers. Technological advancements have paved the way for filterless air purifiers, which stand out for their low maintenance costs and wide coverage areas. Here, we cover all you need to know about filterless air purifiers.

When it comes to the world of air purifiers, the options are seemingly limitless. Each model feels more innovative than or equally as good as the other. This can cause a great dilemma for you, the buyer, because you can’t decide on the best.

However, today’s article will help defeat this dilemma as it will provide insights related to the best filterless air purifiers currently on the market.

So, if you happen to be looking for the perfect filterless air purifier, you have come to the right place!

Comparison Chart of the Best Filterless Air Purifiers

IMAGEPRODUCT
  • It Functions Soundlessly
  • Runner-Up Choice on Our List
  • This Device Uses Thermodynamic TSS Technology to Sterilize Air Completely
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  • Best Value for the Money
  • Is Compact and has a Sleek Design
  • Removes Allergens and Pollutants From the Air
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  • Is Safe to Use Around Children
  • Doesn’t Make a Lot of Noise While Operating
  • Uses Thermodynamic TSS Technology to Purify the Air
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  • It Cleans the Air Effectively
  • It is Small in Size and Therefore Very Portable
  • This Air Purifier Can Produce 20 Million Negative Ions Per Second
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  • Best Filterless Silent UV Air Purifier
  • Removes 99% of odors, allergies, germs, mold, contaminants
  • Comes with a lifetime warranty for peace of mind
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How to Choose a Filterless Air Purifier

When buying a filterless air purifier, there are a few features you should always keep in mind.

Purifying Technology

First of all, you should consider which technology you want to go for. Among filterless air purifiers, you can opt for purifiers that use ionization or ultraviolet purifiers. It all depends on the nature of the contaminants.

Area Coverage

Room coverage is another essential thing. You should opt for an air purifier with greater coverage. You should measure the area (in square feet) to ensure you get the right model.  

Best Choice Products Living Home Office Ionic Air Purifier

Energy Efficiency

Next is the energy consumption. Of course, a purifier that uses excess or is wasteful with electricity is no good for you. Always opt for energy-efficient models.

Noise Production

Another vital feature to look for happens to be the noise level. The quieter an air purifier is, the more preferable it is going to be for the entire household (especially during the night).

The Size

Lastly, the size of the air purifier should be taken into consideration. A larger and heavier purifier would be difficult for you to move around. Such a model will also take up more space. Try and go for compact yet powerful units.

Review of the Best Filterless Air Purifiers

As mentioned before, choosing from a selection of filterless air purifiers can cause a lot of confusion. However, in this section, you will be able to read detailed reviews of the best filterless air purifiers.

So, let’s dive straight in!

Best Overall

Airfree Air Purifier Onix3000

Airfree P3000 Filterless Air Purifier - Air Free Home Air Purifier Requires No Filter, Fan, or Humidifier

Specifications

Decibel Level: N/A

# of Fan Speed Options: N/A

Coverage Area: 650 sq ft

Dimensions: 8.4 x 8.4 x 10.4″

Weight: 3.5 pounds

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Review

This Airfree filterless air purifier may be small in size, but it is definitely no less (performance wise) than many others. It has a ceramic core which can reach up to a temperature of 400 degrees Fahrenheit.

The Airfree air purifier doesn’t rely on a HEPA filter or an ionizer to purify the air. Instead, it makes use of something known as the Thermodynamic TSS technology. This purifies the air by completely eliminating all contaminants present in the air instead of filtering them out.

It pulls the air in and, with the help of its ceramic core, which heats up to 400 degrees Fahrenheit, it completely sterilizes the air. This device then cools the air before sending it out into the room again.

The best part about this filterless unit is that there are no filters for you to replace and maintain. There are no ion emissions to worry about either. All you have to do is simply turn this little device on and let it do its work.  Moreover, it can clean the air in your room up to 99.99%. This means it provides you with completely clean (bacteria-free air).

Along with that, it also deals with household allergens which include pet dander, mold, dust mites, etc. Another feature of this purifier is that it is entirely silent. So, you can use it comfortably, even in your bedroom.

Bottom Line

The Airfree Air Purifier Onix3000 is a brilliant unit if you are looking for a small, noiseless air purifier. It is free from all types of filters and doesn’t require a lot of care and maintenance to have it working effectively. It is a good choice for anyone looking for a hassle-free air purifier.

Pros

Functions Without Noise

Doesn’t Require a Lot of Maintenance

Doesn’t Produce Any Ozone Emissions

Uses Thermodynamic TSS Technology to Purify the Air

Cons

Some People Might Not Appreciate This Unit’s Lack of Portability

Best for the Money

Ionic Pro 90IP01TA01W Turbo Ionic Air Purifier

Envion Ionic Pro 90IP01TA01W Turbo Ionic Air Purifier, 500 sq ft Room Capacity, Black

Specifications

Decibel Level: N/A

# of Fan Speed Options: N/A

Coverage Area: 500 sq ft

Dimensions: 7.5 x 28.5 x 9.5″

Weight: 7.8 pounds

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Review

This Ionic air purifier has a slim and sleek design making it easy to fit into any kind of interior. This purifier uses negative ions to purify the air in the household. It functions by emitting negative particles into the air.

These negative particles latch on to the contaminants such as dust mites, pet dander, mold spores, bacteria, etc. This makes the particles heavier and causes them to sink and settle on the surface. The settled particles can be swept up and cleaned, thus leaving the air clean for you to breathe.

This purifier is a good option for all those who suffer from various allergies and even people who suffer from breathing problems such as asthma. The modern technology effectively gets rid of all pollutants and provides everyone with cleaner air to breathe. It also frees the air of all foul smelling odors caused by smoke and mold, as well as the smell of pet dander.

Since this purifier doesn’t use any filters, it is easier to clean as well. The purifier itself does not take a lot of space, but still has a room capacity of 500 square feet. Moreover, it doesn’t need a lot of energy to function effectively. On average, it consumes less energy than a fluorescent bulb or nightlight would.  

Bottom Line

Overall, the Ionic Pro 90IP01TA01W Air Purifier is a good buy at a reasonable amount. It has all the features of a good air purifier and more. It is portable, which means it can be used in multiple locations and can be set up easily (where and when needed). Although it does require frequent cleaning, the entire cleaning process is an easy one.

Pros

Very Easy to Clean

Easy on the Budget

Portable Air Purifier

Doesn’t Make a Lot of Noise

Provides Crisp and Fresh Air

Doesn’t Consume a Lot of Energy

Cons

While Easier to Clean, it Needs to be Cleaned Quite Frequently

Editor’s Pick

Airfree T800

Airfree T800 Filterless Air Purifier, Small, White

Specifications

Decibel Level: N/A

# of Fan Speed Options: N/A

Coverage Area: 180 sq ft

Dimensions: 6 x 6 x 14″

Weight: 1.7 pounds

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Review

Like all other air filters from Airfree, this one also makes use of the Thermodynamic TSS Technology. This technology enables the air purifier to sterilize the air and make it pollutant-free up to 99.99%. It does so by heating up the polluted air and purging it from all types of bacteria and germs.

It is fairly simple to use due to not having any complex functions for you to make sense of. It takes care of particles such as dust, pet dander, dust mites, and mold spores to ensure your household can breathe clean air. It is safe to use around kids and helps prevent allergies and breathing problems.

This air purifier is very compact and is best suited for smaller rooms and spaces. Furthermore, it works very silently and can be used in bedrooms, lounges, and even guest rooms.

Bottom Line

If you are looking for something that is small yet effective, then the Airfree T800 can prove to be a good option for your household. This is another filterless air purifier which is easy to operate. It doesn’t produce a lot of loud noise so you won’t be disturbed during night time. It is ideal for smaller rooms and offers portability for you to place it anywhere you wish. This unit is safe for kids who have allergies or breathing issues and require clean air.

Pros

Ideal for Smaller Spaces

Lightweight and Portable

Equipped With Cutting Edge Technology

Helps Produce Clean Air to Prevent Allergies and Breathing Issues

Cons

Doesn’t Perform Very Well Against Dust and Smoke

Takes Quite Some Time to Completely Purify the Air

Best Filterless Silent UV Air Purifier

Air Oasis 1000-G3

Specifications

Decibel Level: N/A

# of Fan Speed Options: N/A

Coverage Area: 300 sq ft

Dimensions: 4 x 4 x 14.13″

Weight: 6 pounds

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What Recent Buyers Report

The Air Oasis 1000-G3 is regarded as a must-have filterless air purifier. One user lauded the product for improving the air quality in her bedroom by removing dust particles and pet dander, allowing her to enjoy a good night’s sleep.

Why it Stands Out to Us

The Air Oasis 1000-G3 utilizes three powerful technologies to get rid of the most resilient mold, viruses, and bacteria from the air. You’ll notice a sudden improvement in your indoor air quality and your sleep.

Additionally, this portable air purifier is compact – it weighs three pounds and measures up to 14 inches high – yet has a coverage area of 300 sq. ft. It also removes unwanted air pollution and airborne contaminants while being quiet enough to place in your baby’s room.

Bottom Line

This filterless air purifier is ideal for your home. Its compact size and 3-in-1 air purification technology will ensure improved indoor air quality and a healthier you.

Pros

Minimal noise

Compact for use in any space

Can cover up to 300 square feet

Lifetime warranty except for parts that require replacing

3-in-1 UVC effectively removes 99% of microbes like mold spores and mycotoxins

Cons

Doesn’t completely eradicate odor

Limited number of control features

How Does a Filterless Air Purifier Work?  

Filterless air purifiers, as the name suggests, don’t make use of filters at all. Instead of using filters, these air purifiers emit a charge which latches onto the contaminants in the air. After the particles are charged, they are then gathered on an oppositely charged plate. This works very differently than filter-based air purifiers which usually filter the polluted air and output the clean air.

Airfree T800

Although both the filter and filterless air purifiers are beneficial in different ways, the filterless has some perks you won’t find in filter-based air purifier model.

Which Environment is a Filterless Air Purifier Best For?

The Air Oasis 1000G3 is fit for the following environments:

Bedroom

This device will help remove particle pollutants and bad odors from your bedroom to allow for a peaceful night. Place it far from the bed so the light from the power adapter doesn’t disrupt your sleep.

Offices

This filterless purifier will help you and your co-workers stay focused and feel comfortable in the office by removing harmful pathogens and improving the indoor air quality. You can also use multiple devices for efficiency.

Lounge Room

This device is also great for the most commonly used area in our home. It’ll make sure your indoor air quality is optimal for your guests or your family, as this air purifier will filter out odor and stale air in your lounge room.

Aspects to Consider Before Buying a Filterless Air Purifier

Here’s what you should be looking for in a filterless air purifier:

Energy Usage

An air purifier shouldn’t decimate your electric bill. Look for the Energy Star logo on the packaging to verify energy-efficient units.

Room Size

Most air purifiers list the suggested room size. Pick one that matches the size of your space for effective air purification.

Airfree Air Purifier Onix3000

Warranty

Some manufactures offer generous warranties to cushion users from product-related malfunctions. Why settle for a two-year warranty when you can find one that’s good for 10 years or a lifetime.

Noise

Watch out for an air purifier’s noise rating to ensure quality sleep. We recommend devices with a rating of 30 decibels or lower.

Filtered vs Filterless Air Purifier – How Do They Compare?

Both filtered and filterless air purifiers improve indoor air quality by removing pollution.

You can use both to eliminate harmful chemicals and gaseous pollutants from the air and neutralize unpleasant odors to reduce the chances of airborne diseases and relieve the symptoms of respiratory conditions like asthma.

Neither is perfect. The filtered purifiers can trap dirt, reducing their effectiveness, while filterless purifiers may allow some microorganisms to escape.

Here are other ways in which a filtered and a filterless air purifier compare:  

Filtered Air Purifier vs. Filterless Air Purifier

Compare by tapping or clicking below!

Definition

Filtered Air Purifier

Relies on filtration media to purify the air

Filterless Air Purifier

Doesn’t use a physical filter media

Noise

Filtered Air Purifier

The devices’ fans produce a lot of noise

Filterless Air Purifier

Considered very quiet

Operational Costs

Filtered Air Purifier

Expensive to operate and maintain due to power usage and the need to replace filters, respectively

Filterless Air Purifier

Operates under minimal power usage and has no filters to replace

Coverage

Filtered Air Purifier

Those equipped with the HEPA filter can clean up to 1,000 sq. ft.

Filterless Air Purifier

The ionic air purifier can cover areas of up to 3,500 sq. ft.

Perks of Investing in a New Filterless Air Purifier

Air purifiers have a lot of benefits. They are an easy and efficient way to get germ-free and cleaner air. However, filterless air purifiers add a little more to the equation than that.

The first and foremost perk of a filterless air purifier is that it doesn’t need any filter replacements and related maintenance. This helps save on the additional cost as well down the line. Furthermore, filterless air purifiers don’t produce a lot of noise.

One more perk of the filterless air purifiers is that they are more portable than the filter-based air purifiers, due to being smaller in size.

We have shared with you several filterless air purifier reviews to help you make an informed buying decision. Selecting from the filterless air purifiers on our list can allow you to experience the benefits accompanying quality air purifiers without filters.  

Types of Filterless Air Purifiers

There are two different types of filterless air purifiers you should know about.

IonPacific Ionbox

Ionizers

These are perhaps the very first type of air purifiers made. They work with electrically charged plates.

The plate with the opposite charge collects all the pollutants on it and removes them from the air for a cleaner environment to breathe in.

Ultraviolet Purifiers

The ultraviolet light is very powerful. It can easily help erase particles like germs and bacteria from the air. This type of air purifier doesn’t need a lot of electricity to function and ensure you have clean air to enjoy.

How to Clean and Maintain a Filterless Air Purifier

Filterless air purifiers – which should be cleaned once a month – are the easiest devices to maintain. Here are the steps: 

  1. Unplug the purifier from the power source

  2. Lift and remove the top cover

  3. Remove the ionic blades with a large, metal object

  4. Clean the blades with a dry, or slightly damp, cloth

  5. Wipe out any dirt on the covers and exterior

  6. If the blades are damp, wait for about 24 hours before reassembling; otherwise, reassemble immediately

  7. Securely reinsert the collection boards back into the ionic base

  8. Return the collection blades’ cover and the top cover

  9. Plug the device into the power source and start it

Conclusion

Overall, filterless air purifiers are a good way to deal with a polluted air space indoors. They can effectively help reduce pollutants and allergens from the air and create a healthier environment. The best part is they are easier to maintain than filter-based air purifiers because they don’t use filters, which must be changed with time.

We hope our best filterless air purifier list aids you in finding the right product for you to invest in.

Air Oasis 1000-G3

People Also Ask

Below are some common questions surrounding this topic.

What is a Filterless Air Purifier?

It’s any air purification system that removes allergens without relying on a physical filter medium. Filterless air purifiers can be ionic – which absorbs particles from the air – or photocatalytic oxidation (PCO) devices.

Do Air Purifiers Kill Germs?

They can only trap airborne pollutants. Purifiers with a HEPA filter are particularly good at trapping germs and other viruses.  You can’t substitute washing your hands or cleaning surfaces in your home with an air purifier.

How Do I Make My Filterless Air Purifier Last Longer?

Adhere to the maintenance tips included in the packaging or manual and clean it once the indicator button turns red. Additionally, ensure the blades aren’t turning and are free of any current before applying water to avoid damage. Always remember to dry the blades after cleaning.

How Long Do Filterless Air Purifiers Last?

This will depend on the brand. The least expensive brand will last for a year while higher-priced devices can be good for five. It’ll also depend on how well you maintain it. Filterless air purifiers generally tend to last longer than filtered devices because you don’t need to change filters.

Do Filterless Air Purifiers Remove Mold?

Yes. Filterless air purifiers can eliminate 90% of mold from rotting wood or the bathroom through electrostatic precipitation, UV light, or ionization.

How Good Are Filterless Air Purifiers at Cleaning Household Air?

A filterless air purifier will clean out allergens, bad smells, pathogens, and any other harmful microbes from the indoor air. If most of your household members spend more time indoors, it’s paramount to invest in a good quality air purifier that can clean the air effectively in large living rooms.



My name is Bob Wells and I am a retired HVAC tech from Washington state. I am currently retired and no longer do much with HVAC, however, I feel like I have a lot of knowledge in the subject and I wanted to create a website where I could talk about what I've learned and help upcoming HVAC techs. Find more info about me and HVAC Training 101.