Filterless Air Purifiers

Keeping clean air at home should be a top priority for every homeowner who is interested in having a welcoming and healthy living environment. In this matter, an air purifier is the best ally that does an amazing job of removing impurities from the air. If you could see the amounts of impurities in the air that you breathe daily, you wouldn’t think twice before buying an air purifier. Among all the models available, you will find the filterless one that, although seems unlikely, can remove as many air pollutants as the one with a filter. If you are curious to learn more about this intriguing device, keep reading.

Top Rated Filterless Air Purifiers

Air Oasis 3000 G3 Airfree Onix 3000 LightAir IonFlow Evolution 50 Airfree T800 Envion Ionic Pro Turbo
Blueair Pure 121 Image GermGuardian AC5250PT Image LEVOIT LV-H132 Image GermGuardian AC4825 Image Hamilton Beach 04384 Image

Technologies Used

AHCPO and Bi-Polar Ionization Thermodynamic TSS Negative Ions Thermodynamic TSS Electrostatic

Filtration Rate

Kills 99% of carbon-based molecules like smoke, mold, bacteria, and viruses Removes mold, allergens, dust mites, bacteria, viruses, pet dander, tobacco smoke, and ozone Eiminates 90% of impurities in the air Destroys mold, allergens, dust mites, bacteria, viruses, pet dander, tobacco smoke, and ozone Kills 99.9% of bacteria, dust, mold, viruses, odors, and allergens

Ozone Emission

0.05 PPM 0 PPM 0 PPM 0 PPM 0.05 PPM

Area Coverage

3,000 sq. ft. 650 sq. ft. 540 sq. ft. 180 sq. ft. 65 sq. ft.

Noise Level

0 dB 8 dB 5 dBA 10 dB 2 dB

Working Temperature

0 °F – 120 °F 0 °F – 400 °F 0 °F – 250 °F 0 °F – 320 °F 0 °F – 200 °F

Warranty Period

3-Years 2-Years 2-Years 2-Years 1-Year

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Air Oasis 3000 G3

The number one choice of customers is the G3 model coming from Air Oasis that can handle rooms as large as 3,000 sq. ft. meaning you can use it in large rooms, offices, and even open spaces. It’s a tower purifier made of aluminum and polymers that bring a classy touch to your home. The manufacturer offers a generous 3-year warranty for this highly-efficient air cleaner. The only maintenance task is to replace the AHCPO cell once every three years when the alert notifies you.


It uses two innovative technologies, namely a photo-catalytic UV lamp that kills carbon-based particles like smoke, mold, and bacteria, and a Bi-Polar ionization technology that releases ions to eliminate impurities from the air. Additional characteristics are:

  • Its operating relies on an Advanced Hydration Photo Catalytic Oxidation(AHCPO) that basically neutralizes carbon-based particles and uses hydro-peroxides to disinfect the air
  • It’s more energy-efficient than other similar items due to the photo-catalytic operation that doesn’t involve large fans to force the air through thick filters
  • You won’t have to worry about noise either and it’s very easy to use as well, with only one button to control it


This model will help you deal with allergies. The airborne dust, dander, and pollen will not wear you down or rob you of a restful night sleep. Some of its performance features are:

  • The unit is able to reduce aeroallergens up to 99%. In addition to this, you can say goodbye to unwanted odors and stale air
  • With it, you can breathe fresh and healthy air with ease. The purifier can reduce odors and VOCs up to 99%
  • It can also get rid of mold, viruses, and bacteria in the air and on surface up to 99%. As you can see, this is currently one of the most efficient product on the market


This product measures 4”x4”x15.5” and it only weighs 6 pounds. This means that you can take it with you wherever you go. Its ozone output is of 0.05 parts per million which mean that it’s not harmful to our health. The positive to negative ion concentration is of 20,000,000 cm3. The greatest thing about this product is the fact that it doesn’t affect your energy bill regardless of how constant you use it. This is because it only uses 15-watts. If you use it daily for 4h continuously, it won’t cost more than a coffee at Starbucks. Furthermore, the unit is made from anodized brushed aluminum and polymers. Thus, it will last for many years to come.

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Airfree Onix 3000

Coming from a series of similar filterless purifiers, this one seems to be the favorite of customers who loved its small shape and ease of use. It can be used in rooms of 650 sq. ft. and it’s generally purchased for bedrooms because it’s very small and has an adjustable nightlight at the top. It’s based on a simple method that provides maximum results in eliminating odors, mold, dust mites, smoke, bacteria, and other allergens in the air. It’s warranted to operate free of defects for 2 years after the purchase date and any malfunction will be handled by the manufacturer.

Smart and Innovative

The patented Thermodynamic TSS technology heats the air inside to 400F to kill even the most resistant microorganisms. The purified air is cooled before being released into the room so it’s safe to touch and keep around children. This means that it’s very safe to use, without any ions, ozone, or UV light involved so you can trust it to purify your nursery or bedroom. Some of its features are:

  • Powerful – It moves air through a process of air convection at a rate of 14 m³/hr
  • Continous Operation – It’s completely silent as it only produces a noise of 30 dB
  • Safe – It doesn’t emit ozone or ions

Highly Efficient

It’s highly recommended for sensitive people who might feel uncomfortable around devices that emit byproducts or that use filters that retain impurities. Since it doesn’t use any filters or complicated procedures, maintenance is not something you should worry about. Some of its particularities are:

  • Automatic – Due to the fact that it’s extremely safe, it has an auto-shutoff protection
  • Indicator Light – The indicator light will let you know whether it is operating or not
  • Capable – This unit has been designed for large spaces that measure up to 650 sq. ft.


This model is so energy-efficient that it consumes as many watts as a small light bulb. It does not require maintenance or filters, so you don’t have to worry about additional costs. The product moves air through natural air convection, just like the way hot air ballons function. The air intake happens at the bottom and the outflow at the top. If you’re looking for a model that will eliminate harmful ozone, fungus, bacteria, allergens, viruses, mold, dust and more.

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LightAir IonFlow Evolution 50

An air purifier has never looked so stylish and sleek before the development of the Evolution Ion Flow, a high-end device that boasts a very interesting design. It’s powerful enough to handle a 540-sq. ft. room with the ionic technology that releases ions and negatively charges the particles in the air. Once charged, they are attracted by the metal part in the middle that will gradually get dirty depending on how many impurities it collects.


The test results show that it’s capable of removing up to 99% of harmful particulate matter without creating ozone like the majority of other brands. Even though it doesn’t measure a lot, you will find that it can remove:

  • Allergens
  • Smoke
  • Pollutants
  • Fine dust
  • Bacteria and viruses


This model will consume less than 7 watts per hour. That is considerably less than the common purifiers. As well as, the low power usage will allow you to keep it functioning for the whole day. Some of its particularities are:

  • It removes bad smells
  • Easy to use and maintain
  • It doesn’t require filters

Highly Convenient

It can be placed on the floor or on a table thanks to the wide base that sustains the tower housing made of glass and metal. The light inside the glass part can be turned on or off to complement the rest of your home. When it gets too dirty, you simply remove and wash it then put it back on and it is ready to start the purifying process all over again. During functioning, it only creates 5 dB so it’s virtually silent and discreet. For any problems, you might experience with it, note that it is covered by a 2-year warranty to help you enjoy the highest performance.

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Airfree T800

This is another model designed by Airfree that can be used in rooms of 180 sq. ft. only so it’s a more compact and light-duty purifier. It’s smaller in size for easy portability and it can be placed on a shelf without worrying it will fall. This model has the capacity to remove mold spores, dust, pet dander, and pollen. In addition to this, it’s compact and lightweight.

Exclusive Patented Technology

This product has been independently tested in real life working conditions which means that it has proved its efficiency. Every micro-organism that passes through the device through the patented system will be able to be captured. Some of its features are:

  • No Ozone – You can rest assured about your safety due to the fact that it doesn’t emit dangerous emissions such as ions, ozone, and UV lights
  • Whisper-quiet – The operation won’t make any loud noises which means that you can make it operate throughout the night
  • Energy-efficient – It has a low energy consumption which means that you don’t have to worry about the energy bill going up

Design and Specifications

This model is compact and lightweight. It measures 5.1” x 5.1” x 12’ and it weighs 1.5 lbs. This means that you can take it with you wherever you go. In addition to this, it comes with 2-Years warranty which means that you can take it with you wherever you go. Additionally, it also has a consumption of 33-watts which means that it has an energy-efficient operation. Therefore, you can keep it functioning for the whole day.

Smart and Innovative

Based on the same smart technology, it can kill allergens, impurities, mold, pet dander, dust, household odors and bacteria with ease, leaving the air cool and clean. It can draw around 14,000 liters of air daily and it instantly sterilizes it by heating it to 400F. Some of the particularities are:

  • Sterilized Air – You can keep it working in scorching hot air due to the fact that the sterilized air will be cooled before being returned to the environment
  • Removes Micro-organisms – You will enjoy the fact that you will be protected from the flu and cold since it kills bacteria and viruses
  • High Capacity – The purifier has the capability to clean a room that measures 180 sq. ft.


The best part is that no residues are left behind so it can be used even by the most sensitive of you. Since it doesn’t rely on a filter, it’s easier to maintain and it will not involve further costs. It’s covered by the same 2-year warranty as the other Airfree purifier so you can enjoy peace of mind. What’s worthy to mention is the fact that it removes the need for extra costs as the product is filterless.

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Envion Ionic Pro Turbo

Out of a series of three models designed to purify the air without using any filters, the Ionic Pro Turbo is the most powerful one. It works perfectly in medium to large rooms so you can trust it to clean living rooms, kitchens, or offices. It’s tall but very slim, with a narrow shape that makes it easy to fit in the tightest corners. It looks more like a tower fan but it’s actually a purifier and even though it’s not the most stylish appearance, it can be very discreet, especially since it’s so silent in operating. It utilizes the ionic technology that electrically charges particles and attracts them in order to leave the air clean and with a pleasant smell. With the front-loading blades, it manages to collect the impurities and it also makes it very easy for you to wipe them off from time to time to keep it clean. It only comes with a 1-year warranty but reportedly, it has a long life expectancy.

No Filter vs. Filter Room Purifiers

Every time you encounter a different and more intriguing device, it’s natural to be skeptical until you learn more about it. If filter purifiers never made you question their efficiency because you were familiar with how they worked, things could get tricky with the filterless ones. A quick comparison of the two will help you discover which one is best for you.


In terms of efficiency, the two types provide similar results so you won’t regret choosing any on the two. While one uses a filter to capture air impurities, the other is based on physics to reach the same purpose. However, HEPA purifiers have proven to be more effective in eliminating a wider range of impurities, which is why they are more popular. Also, they are more suitable for people with allergies because they target dust mites and manage to retain more particles from the air.


For some customers, the lack of maintenance is a key feature of filterless purifiers so they opt for this type to eliminate the need to buy and replace filters. This also means that the long-term costs are reduced and there are fewer chances of getting into contact with the dust and debris while cleaning or replacing the filter. Still, the operating of the filterless one is intriguing for many so they prefer going for the regular purifiers or the models with a washable filter.


Whilst the initial cost for a purifier without a filter is higher when compared to the normal ones, you will find that as time passes this turns into an investment. Over time, you will get your money back. The reason why we are highlighting this is that with the usual purifiers, you will have to change the filter every 3 months in order to maintain the same efficiency. Whereas, with a filterless one, all that you will have to do is to clean it.

Allergy Triggers

In order to relieve yourself from allergies, you have to change the way you live and your choices. There are numerous things around your home that can act as a trigger rather than your helping hand. This is why you need to purchase a filter. They are so powerful that they will be able to deal with any possible triggers. In fact, there are no triggers that don’t get eliminated by the purifiers. Below you will find a list of the things that can make you sneeze, have a runny nose, red and itchy eyes, wheeze, and itch.

Dust Mites

This is one of the most common triggers that you will find in any household. It’s actually one of the main cause of asthma in children. Your home environment is the perfect area for them to grow and multiply. They enjoy temperatures that are above 75 degrees Fahrenheit and a humidity between 75% to 80%. If the humidity falls below 50% they will simply die.

You can find them in your pillows, mattresses, carpeting, and upholstered furniture. It doesn’t necessarily mean that your house is dirty if you have them. In fact, when you vacuum, they float in the air and settle once you are done.

To minimize them you have to remove any curtains and drapes in the bedroom and keep pets out of the area where you sleep. In addition to this, wash bed linens frequently in hot water and keep humidity low. In order to eliminate them completely, you will need the help of a purifier.


If you’re suffering from allergies since you’re young, you may already know that pollen is found everywhere as it comes from trees, grass, flowers, and weeds. Different people can be allergic to different types of pollen. It’s inevitable for your home to have pollen particles because it comes from everywhere. We are surrounded by it.

In order to manage the number of pollen particles in your home, you need to opt for wood flooring. This is because they are much easier to clean. In addition to this, we recommend that you wear a mask when you thoroughly clean your home. Likewise, with dust mites, it’s best that you keep a purifier in your living room and bedroom especially during spring. That’s when the dust particles double.


You may be already aware that this is a fungus which causes spores that float in the air. If a person comes in contact with a large amount of them, there are dreadful repercussions. Dust allergies may be the least painful one to deal with. As a rule of thumb, you have to remember that there are different kinds of mold. Some you can see and some you don’t.

It’s worthy to mention that mold lives everywhere. This includes fallen tree leaves and your home. Places like your bathroom, kitchen, and bedroom. We strongly advise that you seek the help of a specialist to get rid of it completely. Meanwhile, you need an air filter that will suck up those spores way before they get to you.