5 Best Filterless Air Purifiers of 2023

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From hundreds of options finding the best filterless air purifier isn’t so easy.

But afraid not!

We’re here to help you find out the best no filter air purifier that will significantly improve your living conditions.

Best Filterless Air Purifier

We’ve searched, tested, and compared a number of latest models to check manufacturers’ claims so that you can find the right one. Finally, we’ve short-listed 5 high-quality, top-rated units.

We’ll provide you with more useful information in our Buying Guide at the end of this filterless air purifier reviews. We hope this will certainly help you make a wise buying decision.

So, explore now the top 5 and take a deep breath!

Filterless Air Purifiers Top Picks

Short in time? No worry.

We’ve added the following comparison chart for your faster checking!

Here are the Best Filterless Air Purifiers in 2023 Review

Making a list of the top- quality and practical filterless air purification system is a tricky task for sure. In fact, the quality vs. cost argument is the first issue you have to deal with.

However, without wasting much of your time, we’re going to make our reviews of 5 top-rated filterless air purifiers for your home or office.

 Keep reading!

1. Airfree P1000 – Best Medium Room Filterless Air Purifier

Airfree P1000 – Best Medium Room Filterless Air Purifier


  • Filterless & patented thermodynamic TSS technology
  • Coverage area: 450 square feet
  • Consumption 43W
  • Adjustable, blue night light
  • Made in Europe
  • CARB-certified

This is the top class filterless air purification system ever from the pretty established brand Airfree.

It creates the cleanest, freshest air.

Airfree P1000 is a master of destroying numerous allergens, viruses, bacteria, and many other carbon-based contaminants. It can generate the cleanest, most refreshing air possible within large space up to 450 sq. ft.

It effectively destroys even the microorganism.

The secret of such capacity consists of its ‘patented thermodynamic TSS technology.’ This technology is so powerful that it’ll effectively destroy even the microorganism of your home.

It saves you both money and time.

There is no hassle of filter cleaning or replacement. The convenient filterless technology of Airfree P1000 saves both money and time of its users. Additionally, the unit has a very low energy consumption as there is no use of fans or filters.

It integrates with your home décor

It’s worth noting that the unit is incorporated with award-winning design. 10.4-inch height and 8.4-inch diameter make the unit compact and space saver. This compact and attractive design easily integrates with your home décor.

 Is that all?

This little boy is perfect for nurseries and bedrooms. Firstly, it’s a completely silent air purification solution. So, you’ll enjoy a peaceful indoor atmosphere.

Secondly, there is an adjustable, smooth blue night light. This fancy night light will help you to create a comfortable and cozy environment in your bedroom.

So, switch on the device and let it do the job.


  • High-quality
  • Award-winning design
  • No dangerous emissions, No ozone
  • Quiet operation
  • Low energy consumption
  • Maintenance-free


  • The exterior may get warm that slightly affects the room’s temperature

2. AirFree T800 – Best Budget Air Purifier, (for small rooms up to 180 square feet)

AirFree T800 - Best Budget Air Purifier


  • Filterless & thermodynamic TSS technology
  • ISO laboratories’ tested
  • Maximum Coverage: 180 sq. ft
  • Consumption 45 W
  • Two years warranty
  • Made in Europe

If you’re looking for an efficient but budget-friendly unit to purify your home air, then AirFree T800 can be the right option for you. It’s undoubtedly the best budget air purifier that doesn’t compromise quality. Despite its pocket-friendly price, it includes all the essential features.

Designed for small room

This unit works well in rooms up to 180 square foot. For most personal applications, it’s a perfect size. You can comfortably use it in the office and at home, including the bedroom at night.

Great for most home settings

T800 features a slim and sleek design. This pretty cool design looks great in almost home settings without being too noticeable. The slim design makes it perfect to fit practically anywhere. Moreover, due to lightweight and compact, it’s portable.

Laboratory tested- No ozone, ions or UV light

The patented thermodynamic TSS technology produces no harmful emissions, ozone, ions or UV light. Importantly, ISO laboratories tests demonstrate that it actually eliminates ozone by 26%.

It handles airborne microorganisms…….and much more

This Airfree air purifier is a good safety measure for flu season. It can handle airborne microorganisms that are removed inside the unit at temperatures of close to 400 °F.

Do you know that it can destroy viruses, bacteria from your home?

Yes, it can. AirFree T800 can destroy bacteria, viruses. Additionally, it removes dust mites, mold, pet danger, and organic odors.

Your electric bill won’t increase

Don’t worry about the electric bill, because it produces the required heat by using a minimal amount of power.

Is it loud?

No, this bad boy is completely silent while it’s running.

What more can you ask for?

Grab one today and start enjoying high-quality air in your home.


  • Distinctive design
  • Plug & play operation
  • Environment-friendly
  • Small and portable
  • Completely silent operation
  • No Maintenance
  • Affordable


  • Small room coverage
  • At first use, it produces noticeable smells a bit like plastic

What is Thermodynamic TSS technology’?

This technology uses the ‘boiling water’ theory to work. It means that heat is its primary tool to destroy microorganisms with 100 percent efficiency.

3. AirFree Onix 3000 Air Purifier – Suitable for Large Room

AirFree Onix 3000 Air Purifier


  • Filterless
  • TSS air sterilizing technology
  • Tilt sensor
  • Maximum coverage area: 650 sq. ft
  • Consumption 51W
  • Voltage: 110 – 127 V

This AirFree Onix3000 is a popular model on the market today. It comes with many fantastic features. It effectively purifies home air without producing any harmful side effect or ozone.

It destroys mold, allergens…….and much more

Onix3000 is run by ‘patented thermodynamic TSS technology.’ This excellent feature kills allergens, mold, dust mites, viruses, and bacteria and much more. Additionally, it can remove the putrid smell of tobacco and other carbon-based pollutants.

No tension of cleaning or replacing the filter

As it’s a filterless unit, the users are free from the tension of replacing the filter frequently. It requires only 110 to 127-volt power to function perfect for a 650 square ft. house.

It’s quite silent.

Importantly, its operation is completely quiet. It does not produce any annoying sound. As a result, you can enjoy a calm environment in your bedroom or office.

So, how can you beat that? With so many exciting features at your disposal, can you afford not to acquire this top-rated air-purifier?


  • Award-winning, Attractive design
  • Lightweight and compact
  • Large room coverage
  • Energy efficient
  • No harmful emissions
  • Completely silent


  • The exterior of the unit gets warm will in operation
  • Not good for removing certain chemicals, pet hairs, dust and odors

A comparative discussion of these 3 models

Are you confused to choose from these models of the same brand Airfee?

Let’s make the difference clear to you.

Airfree offers models for every room size (small, medium and large). In these three models Airfree has used the innovative Heat Sterilization technology that makes these three models 100% effective in destroying microorganisms. All these three models come with almost the same features except the different coverage area.

AirFree T800Airfree P1000Airfree onix 3000
Coverage area: up to 180 square ft.
Specialty: small & portable
Coverage: up to 450 sq ft.
Specialty: Adjustable night light
up to 650 square feet.
Specialty: Adjustable night light

In summary, these three models are the fantastic line of filterless air purifier for sterilizing your home or office air and keeping you safe from all the harmful viruses, bacteria and other germs. So, according to your room size pick the right one.

4. Air Oasis 1000G3 – Perfect for Allergies (For medium to large indoor rooms)

Air Oasis 1000G3


  • Simple On / Off Power Switch
  • Scientifically Tested and Doctor Recommended
  • Maximum coverage: Up to 1000 square feet
  • ETL 867 Certified

Next, we have this antibacterial, quiet, compact unit with unmatched air quality improvement in its class. Air oasis offers this latest Air & surface purifier 1000G3 that comes with large coverage, bacteria and mold purifying technology and much more. The unit is scientifically Tested and Doctor Recommended.

The secret of its high-efficiency is due to the combination of germicidal UV-C, AHPCO ionization and Bi Polar filterless air purification technologies. In fact, this filterless air purifier with Ionizer works better than any air purifier with carbon and HEPA for removing particles out of the air and surface disinfection.

It’s a Strong Allergy Relief

1000G3 is an Ultraviolet (UV-C) light air purification system. That means it uses a “UV-C” germicidal light to kill 99% airborne bacteria and viruses in the air and on surfaces. Not only that, it defeats allergy-causing dust, pollen, smoke and even the smallest particles with high efficiency. Overall, it’s one of the best air purifiers for mold and allergies that produces sterilized, clean air for you to breathe.

This bipolar air purifier beats mold-related issues.

Air Oasis 1000G3 effectively kills mold. So, Physicians treating allergies and mold-related illnesses across the United States recommend this model to help people breathe easier and feel better.

Extra-Strong Odor Control

This purifier will let you say goodbye to unwanted odors and stale air. It removes VOCs and odors up to 99 percent. Enjoy fresh, healthy air all the time.

Third-party lab tested

1000G3 is third-party lab tested to eliminate 99.99% of H1N1 Influenza virus in 20 minutes or less. So, there is no scope of flu this season!

Covers maximum 1000 Square Feet!

This little boy has large and effective coverage zone which is up to 1,000 square feet. However, a larger version available! For larger spaces, this brand offers another model Air Oasis 3000G.

 Blends in seamlessly into any home décor

 The slick and modern design blends in seamlessly into any room. So you don’t have to worry about any unsightly products.

Operation is nearly silent

This intelligently designed air purifier ensures maximum protection without all the noise. The fan noise is less than 5dBA.


  • No Filters to Replace
  • Intelligently Designed
  • Energy-efficient—uses only 15 watts
  • Virtually Silent Operation
  • Strength Odor and Germ-Killing action
  • Compact, Lightweight and Easily Portable
  • Cost-effective


  • The price is a little higher for budget-conscious customers

5. IonPacific ionbox Filterless Mobile Ionizer (for medium size rooms up to 500 square feet)

IonPacific ionbox Filterless Mobile Ionizer


  • Filter-less & patented negative ion technology
  • 20 million negative ions/sec
  • Built-in dual voltage power supply
  • USB Plug for PCs, Laptops or Cars
  • Coverage area: 500 square ft

Do you need an affordable, travel-friendly no-filter air purifier? Then, consider acquiring this IonPacific-ionbox filterless air purifier. This high-density negative ion generator is a result of years of study in the UK and USA engineers. It comes with many unique features to ensure safer, cleaner, fresh and overall better quality air that your health deserves.

Discharge almost 20 million negative ions/second

Are you wondering what the necessity of such a large amount of negative ions?

Actually, the more an air purifier discharges negative ions, the more potential it is to terminate the airborne microorganisms.

The engineers made it available for all after several more in-depth studies on ‘negative ion technology.’ This negative ion generator can discharge almost 20 million negative ions/ second which is the highest amount of negative ions released by any air purifier ever.

Tested and Proven efficiency

The performance and effectiveness of this mini air purifier are individually tested. It guarantees that you’ll breathe HEALTHIER AIR in your home.

Better health with a peaceful atmosphere

This negative ion generator air purifier purifies your home air within the fastest time with the destruction of the most amounts of microorganisms. It can also remove any odor and eradicate deadly viruses, bacteria, dust, allergens, and so on. This no ozone air purifier ensures you better health with a peaceful atmosphere.

You can run it without increasing your energy costs.

IonPacific-ionbox doesn’t force you to pay more electric bill as it can function with a lower voltage. The result is more savings and lower utility bills.

Never worry about replacing the filter!

The purifier does not let your money wasted on frequent filter replacement as it works without filter. So, no hassles of maintaining or purchasing and replacing an expensive filter!

Clean air in any environment

You can travel with it internationally and use it anywhere without the hassle of finding the right electrical converter. It features a built-in multi-power supply. So, you can connect it to your PC, Car, RV or any USB outlet to run it. Additionally, it runs at an ultra-low 1.5 watts.

IonPacific ionbox is small, but don’t let its size fool you!

This little boy comes with dimensions 6.1 x 4.4 x 2 inches that weigh only 4.8 ounces. The coverage area is also five times more than any purifier of its class. What’s more, it delivers up to 10 times as many as ions compared to other ionic air purifier unit of its class.

Incredibly budget-friendly

 Lastly, we’d like to make a mention of honor for the price that it offers. Comparing its features and benefits it offers, IonPacific ionbox has made its way affordable for buyers who’re in a tight budget. Overall, for budget-minded people, it’s an excellent option.


  • High-quality construction
  • No costly maintenance or any cleaning required
  • Simple but modern design
  • ZERO Ozone
  • Versatile and travel-friendly
  • Ensures better health and sleeping


  • Few users report a noise problem

How to Choose the Right Filterless Air Purifier – Buying Guide

When it comes to buying the perfect filterless air purifier, the experience is a little different than purchasing an air purifier with the filter.

There are several things that you need to think about, when buying the best air purifier without filter.

These are:

Maximum Area Coverage/ Range

 The first consideration is the coverage area of the unit. The effectiveness of air purification unit is based on the square footage of the room. Measure the room of the size you want to appear by. Popular rooms for air purifier include bedrooms, kitchens, living rooms and home offices. Make sure that the unit will be able to support the space where you’ll put it.

Pro- tip

Choose the model with coverage rating slightly higher than your intended room size.

Noise Level

Also, consider the noise level. This is important if your air purification unit is working in a bedroom or office where noise will be a concern. For a very quiet air purifier look for one marked 15 decibels or less.


The weight of an air purifier unit affects to its mobility. If you need to move the unit around, to different places of your home, choose the model that will give you a lot of versatility. However, a filterless unit isn’t heavier than 10 pounds. But 3 to 7 pounds is ideal for a lightweight air purifier.

Others Features

Today’s air purification units come with various advanced features that may be an important consideration for you in considering the right model. Features such as multiple speeds, a remote control, air quality sensor, auto shut-off and so on. Remote control can be convenient for changing the settings across the room. Handles will allow for greater flexibility if you need to move the unit around the house. Wi-fi connectivity is an excellent option for monitoring and adjusting your air purification unit on the go.

Pro tip

To remove pesky airborne pollutants, select the model that is capable of removing at least 99% of airborne particles.


Most air purifier ranges from $50 to 600+. The most significant factors in determining the price are purifier’s coverage range, type of purification, and features. However, keep in mind that models with fancy features will cost you a lot.

 What is a filterless air purifier?

In general, air purification systems use different types of filters to capture the various elements that are in the air. Undoubtedly, these filters are handy. But they are costly, requires regular cleaning, replacement and maintenance. However, a filterless unit minimizes those hassles of filters.

A filterless air purifier is a device that purifies the air without the need for a filter. They use different types of purification methods to make your air clean, fresh and healthy.

How No filter system Works

As the name suggests, there is no physical filter in a filterless system to purify the air. It uses simple technologies other than filters to remove the airborne particles.

There are different methods that no filter air purifiers use for the purification process. Some of these methods are:

  • The ionization method
  • The Electrostatic precipitation
  • Heat sterilization/Thermodynamics method
  • Ozone generation
  • UV-C rays method
  • Photocatalytic oxidation

 Most of the airborne particles and germs are consisted of positively charges ions. The unit that uses ionization technology produces a steady stream of negatively charged ions.

These negatively charge ions attract the positive ions of airborne contaminants and form an ionic bond. When they clasped together, the particle’s cluster becomes very heavy. As a result, they can’t remain in the air and settle in the device.

In the thermodynamics method, the power of heat is used to remove microorganisms and germs from the air. It just passes the air through very high temperature (400- degree Fahrenheit) to kill microorganisms present in the air. Thus, they give you a healthy living or working environment.

Some units of this category use the power of UV-C light to eradicate the harmful contaminants of air.


Filterless air purifiers offer a wide variety of different benefits.

Some of the most outstanding benefits of using a filterless air purifier follow here in short.

They don’t require much maintenance

The excellent and most lucrative benefits are the users don’t need to spend extra money on replacing the filter after some months or years. Additionally, as there is no filter, there is no pain of cleaning the filter stinks.

 They are perfect for people highly-sensitive to noise

Best filter free air purifiers don’t produce much noise. And there is no fan in the filterless units. So, you won’t need to deal with a lot of noise. If you’re very sensitive to noise, then you’ll probably appreciate this quietness. The noiseless operation is one of the most significant benefits of no filter unit over a true HEPA air purifier.

 They are energy efficient

There is no fan in a filterless system. With fewer components to power, it uses less electricity than any filtered counterparts.

 They don’t dry out the indoor air.

 Users of air purifier with filter complain that they wake up with sore throats in the morning. But this is not the case for filter-free units. A filterless unit purifies the air without significantly change the humidity to its surroundings. So, you don’t need to worry about the indoor dry air and sore throat when running a filterless system in your bedroom.

Moreover, filterless units are lighter, portable. They are also cheaper than filter type air purifier.


Nothing is an unmixed blessing in the world, and so everything has few or more shortcomings. Same is the case with the filterless units.

Here follow some of its’ significant demerits.

Less effective compared to HEPA air purifiers

Most of the filterless purifiers are not as capable as HEPA filters. The reason is- the inbuilt plates for attracting harmful invisible particles are not so much active. Moreover, the machine becomes weaker when a mass of dirt accumulates on the plates.

 Less effective against odors

The filterless systems are less effective in removing odors as compared to air purifiers having carbon filters. However, ozone-generation filterless air purifier is effective in elimination odors, smoke from the air.

 Seen to release Ozone

Ozone-generation filterless air purification systems are often seen to release Ozone that is harmful to a human body.


How do I choose the right air purification system with perfect coverage?

Always pick a model that will exceed the square footage size of your room size. If your intended room size is 400 square feet, opt for a model rated with 500 square feet coverage.

How do I find out the square footage of my room?

It’s simple! To calculate the total size, you need to measure the length and width of your room in feet. Round up the data if needed. Then multiply these two measurements, it’ll give you the total square footage.

For example:

Length 30 ft. x Width 15 ft.= total 450 square feet.

 Do the purifiers that use ionization method to purify the air kill germs?

Yes, the ions that they produce can reduce or kill bacteria.

Are the UV-C lights inside the filter-free air purification unit safe for humans?

Yes, the UV-C rays that are used in this type of air purification system feature band of the electromagnetic spectrum of 400 nm to 10 nm. This length is shorter than the visible light and longer than X-rays. It kills microorganism of air without impacting human health.

Is it safe to keep air purifier on at all times?

No problem. You can keep your air purifier on 24 hours/ day, 7 days/ week. If you turn off the unit, the chances are that the microorganism may start to build up again. So, it’s recommended to keep your unit on all the time to keep virus and bacteria under control.

 Is it safe to use a filterless system that doesn’t have an ACH rating (Air Changes per Hour)?

ACH refers to per hour how many times an air purifier completely exchanges the air in a room. This rating is applicable only for filter type air purifier that has fans to suck in contaminated air.

A filterless unit doesn’t employ a fan to blow out the clean air. So, you don’t need to consider the ACH rating for a filterless unit.

Does an air ionizer purifier remove odor from the air?

Ionizer air purifier units effectively eradicate common household odors from chemical cleaning agents, smoke, pets, cooking, and mold.


All the best filterless air purifiers that featured in our reviews are unique in their own right. So, it’s hard to select one particular unit. However, take into account your need and budget.

Hope, from our list you’ll be able to pick the right air filter that will fit your needs and budget.

So what are waiting for?

Grab one today and give your family the gift of fresh, clean air.

 Stay healthier!

 Thanks for staying with us up to the end of our filterless air purifier reviews.

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