A best filterless air purifier not only protects you from germs, bacteria, and allergies but also saves you from extra filter replacement cost and filter cleaning fatigue. Moreover, filterless air purifiers are less costly, lightweight, travel convenient, and easy to use.
Several air purifiers are available in the market that uses the latest technology like Thermodynamic TSS Technology or negative ions in place of HEPA filter and activated carbon filter. These air cleaning technologies effectively eliminate smoke, allergies, bacteria, mold, spores, and bad odors.
In the list of best filterless air purifiers for allergies in 2021, I combined all those air cleaning machines that purify your small room, bedroom, or large apartments without any extra filter replacement or maintenance cost. You can check every important specification like room coverage, air cleaning capability, design, silent operation, and power consumption of every air purifier in the list.
- Our Top Picks
- List of Best No Filter Air Purifiers 2021
- 1. Airfree Lotus – Overall, Best Filterless Air Purifier in 2021
- 2. Airfree P3000 – Ultra Quiet Small Air Purifier with NO Filter 2021
- 3. Airfree Tulip – Noise Free Filterless Air Purifier for Bedroom, Dorm, or a Nursery 2021
- 4. Envion Ionic Pro Turbo – Best for Cold and Flu Viruses in 2021
- 5. IonPacific Ionbox – Best Negative Ion Generator Under 100 in 2021
- 6. Clarifion – Filterless Mobile Ionizer & Travel Air Purifier 2021
- Why You Need A Filterless Air Purifier? Benefits and Advantages
- Disadvantages of a Filterless Air Purifier
- Best Filterless Air Purifier – Expert’s Tips and Buying Guide
Our Top Picks
List of Best No Filter Air Purifiers 2021
|Model||Dimensions (inches)||Max. Noise Level (dB)||Power (W)||Area (sq.ft.)||Rating||Price|
|Airfree Lotus||7.7 x 7.7 x 12.6||No Noise||52||650||⭐⭐⭐⭐⭐|
|Airfree P3000||8.4 x 8.4 x 10.4||No Noise||52||600||⭐⭐⭐⭐⭐|
|Airfree Tulip||5.7 x 5.7 x 13.3||No Noise||44||450||⭐⭐⭐⭐⭐|
|Envion Ionic Pro Turbo||7.5 x 28.5 x 9.5||40||12||500||⭐⭐⭐⭐|
|IonPacific ionbox||6.1 x 4.4 x 2||No Noise||1.5||500||⭐⭐⭐⭐|
|Clarifion||9.61 x 5.24 x 2.24||No Noise||1||150||⭐⭐⭐|
1. Airfree Lotus – Overall, Best Filterless Air Purifier in 2021
Airfree Lotus is a 100 % ozone free air purifier with no filter technology. It is also CARB (California Air and Resources Board) certified and comes with a sleek design and multi-color nightlight function. It will fit with your home decor and ultra-quiet. This small filterless air purifier is the permanent solution for dust, allergies, and smoke.
The design of Airfree Lotus is unique and complex. It opens its pedals when it starts running. This portable air purifier offers 9 beautiful colors like Red, Pink, White, Violet, Blue, Dark Blue, Green, Yellow, and Orange that calm your nervous system and help you sleep easily. Airfree Lotus is 13 inches in height and 7.7 inches in width. It is incredibly lightweight (5.6 lbs.) you can easily place it on a tabletop, desk, or anywhere in your room.Filtration System
Airfree Lotus offers one of the best filterless air cleaning systems in the world. Exclusive Patented Thermodynamic TSS Technology kills germs, pollen, pet dander, mold spores, viruses, ozone, and other organic pollutants by heating them at 400 °F. Remember, this heating process doesn’t use an ionizer, UV light, or ozone. Therefore, it might be suitable for people with asthma and other breathing issues.Area Coverage
Airfree Lotus can clean 650 square feet of the area. As you know, Airfree Lotus doesn’t use any air filter for cleaning and purifying the air; therefore, there is no air changes per hour rating (ACH) and clean air delivery rate (CADR).Noise Level
Airfree Lotus is the best no filter air purifier for those who cannot bear even a slight sound. You will not hear any sound while this air purifier is cleaning the air.Power Consumption
The rated power consumption of the Airfree Lotus air purifier is 52 watts. You need to run this air cleaner for 24 hours because the cycle of Thermodynamic TSS Technology should not be interrupted.
Airfree Lotus is the best filterless air cleaning solution for allergies, dust mites, pet dander, smoke, and bad smells. This silent air purifier does not require any filter replacement or extra maintenance cost. It is very suitable for a quiet and peaceful sleep.
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2. Airfree P3000 – Ultra Quiet Small Air Purifier with NO Filter 2021
Airfree P3000 is another filterless air cleaner that uses Thermodynamic TSS Technology to destroy germs and contaminants. It is 100 % ozone free, exceptionally quiet, and certified by the California Air and Resources Board (CARB). Moreover, the blue nightlight function helps you sleep peacefully at night.
Airfree P3000 air purifier offers an excellent design with a refined and fancy finish. It is 10 inches in height, 8 inches in width, and exceptionally lightweight (3.3 lbs.). If you are looking for a desk air purifier, Airfree P3000 is the best choice for you.Filtration System
In addition to its unique feature, Airfree P3000 offers Exclusive Patented Thermodynamic TSS Technology that draws the air into the air purifier and heat to the point where all germs, bacteria, and viruses could survive. This process eliminates mold, spores, smoke, household odors and entirely safe for people with asthma and other breathing and respiratory issues.Area Coverage
Airfree P3000 can cover 650 square feet area and best filterless air purifier for home and offices. There is not an ACH and CADR rating available because Airfree P3000 is not a regular air purifier.Noise Level
Airfree P3000 is completely silent that you will be confused that your air purifier is running or not. I recommend this air purifier for bedrooms because of its ultra-quiet operation and blue nightlight option.Power Consumption
Airfree P3000 offers 52 watts of power consumption. It would be best to run this air cleaner for 24 hours to complete the Thermodynamic TSS Technology cycle.
Airfree P3000 provides maximum protection against germs and bacteria at a reasonable price. Ultra-quiet for peaceful sleep and suitable for people with asthma.
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3. Airfree Tulip – Noise Free Filterless Air Purifier for Bedroom, Dorm, or a Nursery 2021
Airfree Tulip is a CARB certified mid-range air purifier with anti-stress light. Thanks to Thermodynamic TSS Technology, this air cleaner eliminates germs, bacteria, mold, spores, and smoke quietly and effectively. It is 100 % ozone free and highly suitable for people with asthma and respiratory issues.
Airfree Tulip has a curvy and sleek design with 13 inches in height and 5.7 inches in width. It offers traditional bottom to top airflow system. Its beautiful shape fits with any decor. This tabletop air purifier is just 2.4 lbs. in weight and very easy to use anywhere in your home.Filtration System
Airfree Tulip offers Thermodynamic TSS Technology for killing germs, viruses, and bacteria. This technology is completely quiet and saves you from extra filter replacement and maintenance expenses.Area Coverage
Airfree Tulip air purifier can protect up to 450 square feet of the area from smoke, pet smell, cooking odor, cigarette smoke, pollen, pet dander, mold, and spores.Noise Level
Thanks to Thermodynamic TSS Technology, Airfree Tulip is completely noise-free. It offers you 10 different nightlight colors so you can enjoy a peaceful sleep.Power Consumption
Airfree Tulip offers 44 watts of power consumption. You need to run this air purifier for 24 hours to maintain the cycle of Thermodynamic TSS Technology.
Airfree Tulip is a portable and small filterless air purifier that can fit in any room, bedroom, and office. It offers a completely silent operation with low energy consumption. Moreover, its ozone free and high suitable for kids room and people with asthma.
4. Envion Ionic Pro Turbo – Best for Cold and Flu Viruses in 2021
Envion Ionic Pro Turbo is a CARB certified ionizer for killing allergens, mold, spores, and bacteria from 500 square feet of area. It is very quiet (40 decibels), and you don’t have to bear the annual filter replacement cost. More than 1600 customers reviewed Envion Ionic Pro Turbo on Amazon and were completely satisfied with its performance.
Envion Ionic Pro Turbo is 27 inches in height with back to front airflow system. At the top, you will see a control panel with 4 indicators like fan speed and cleaning indicator. You can easily move Envion Ionic Pro Turbo in your home because it’s very lightweight (8 lbs.).Filtration System
Envion Ionic Pro Turbo uses an ionizer to trap viruses and allergens. The ionizer emits negative ions, charges the airborne pollutant particles, and Eliminates staph and strep bacteria from the air.Area Coverage
Envion Ionic Pro Turbo can clean 500 square feet of the area every 20 minutes in one hour. The clean air delivery rate (CADR) is 85 cfm in general. The CADR is relatively low as compared to the other top-rated air purifiers in the market.Noise Level
The minimum noise level of Envion Ionic Pro Turbo is 40 decibels. Although Envion Ionic Pro Turbo does not use any fan, the noise level should be lower. If you clean the collective blades on time, the noise level will be as soft as possible.Power Consumption
Envion Ionic Pro Turbo is an energy-efficient air purifier and offers 12 watts power consumption. You don’t have to worry about extra electricity expenses when you run this air cleaner for a whole day.
Envion Ionic Pro Turbo is a simple air purifier that uses an ionizer to remove germs, bacteria, and other allergens. There is no filter replacement cost. It is very quiet, but the CADR rating is low for 500 square feet of area.
5. IonPacific Ionbox – Best Negative Ion Generator Under 100 in 2021
IonPacific ionbox is the smallest ion generator available in the market. It can easily fit in the size of your palm but powerful enough that it generates 20 million negative ions per second. If you are looking for an effective and affordable solution for allergies, smoke, pet dander, pollen, mold, and other allergens, IonPacific ionbox is perfect for you.
IonPacific ionbox is 6 inches in height and 4 inches in width. It is exceptionally lightweight (0.3 lbs.) and very convenient to bring anywhere with you. If I tell you that the IonPacific ionbox is the best filterless air purifier for travel, it will not be wrong. You can connect it with any regular power socket or USB port. You can find these cheap USB cables for running this mini air purifier anywhere in the world.Filtration System
IonPacific ionbox emits negative ions for killing germs, bacteria, and viruses. When you run this air purifier in your home, it emits 20 million negative ions per second and removes tobacco smoke & odor, airborne bacteria, allergens, pollen, harmful dust, pet odors, and pet dander from the air you breatheArea Coverage
Moreover, this portable air purifier can easily clean 500 square feet of the area every 12 minutes in one hour. The air changes per hour rating (ACH) is 5X.Power Consumption
The dual voltage power of the IonPacific ionbox helps you connect anywhere in the world. The maximum power consumption of this small air purifier with no filters is 1.5 watts. One thing I want to remind you that when you run this air cleaner in your bedroom, you will hear a cracking sound. Moreover, the blue light can be disturbing for you because no option is available for turning it off.
IonPacific ionbox is a mini travel air purifier. The 20 million negative ions per second generated from this air cleaner purify the air in your hose from germs, smoke, odors, and viruses. I recommend IonPacific ionbox for personal use or a tiny room or bedroom.
6. Clarifion – Filterless Mobile Ionizer & Travel Air Purifier 2021
Clarifion is a simple and portable air purifier (9 inches in height and 5 inches in width) and one of the best and safe ion generators available in the market. It is very easy to install, ultra-quiet, and energy-efficient. If you are looking for a filterless air purifier for a very small room (150 sq. ft.), Clarifion is a perfect choice for you.
Clarifion air purifier comes with an LED and different color nightlight that fits with your decor. But remember, the light can be irritating for your eyes in the dark. I recommend placing this mini air cleaner where you can’t see the light directly or cover the LED part. It is incredibly lightweight (0.6 lbs.) and can easily plug into your wall.Filtration System
Clarifion air purifier emits 10 Million negative ions per cm3 to kill germs, bacteria, and allergies and protect your immune system. These negative ions charge the airborne pollutant particles from smoke, pet dander, dust, mold and pull them down from the air you breathe. There is no filter replacement cost. All you have to do is, install the Clarifion air purifier in your home and let it do its work.Area Coverage
Moreover, Clarifion air purifier can cover 150 square feet of are maximum. If you are looking for a large room air purifier without any HEPA or carbon filter, Clarifion is not for you.Power Consumption
The power consumption of Clarifion air purifier is 1 watt, which is outstanding. Thanks to the dual voltage system, you can use this energy-efficient air purifier anywhere in the world. Moreover, it cleans the air very quietly; therefore, you can place it in your bedroom, office, kitchen, or dining room.
Clarifion is a filterless air purifier specially designed for allergies. It also cleans dust, mold, and other allergens from your small room or living room. Highly energy efficient and ultra-quiet. If you are having breathing issue, you must consider other CARB certified air purifiers.
Why You Need A Filterless Air Purifier? Benefits and Advantages
Most of the standard air purifiers use constant fan power to deliver fresh air from the filtration system to every corner of the room. But, the air purifiers without filters do not need continuous airflow for providing purified air to the user.
The standard air purifiers offer different layers or filtration systems like pre-filter, True HEPA filter, and activated carbon filter. These filters required some maintenance or replacement over time. In the case of filter-free air purifiers, you don’t have to bear the extra cost of filter replacement or maintenance.
As I mentioned earlier, the standard air purifiers use a fan for throwing fresh air. Therefore, they produce a little or high amount of noise according to the fan power. The filterless air cleaners are exceptionally quiet because they don’t use any fan.
Disadvantages of a Filterless Air Purifier
No-filter air purifiers have some disadvantages:
These air purifiers are not effective in dealing with particles because they don’t have HEPA filters and activated carbon filters.
The activated carbon filter effectively absorbs smoke, cooking smell, pet odors, VOCs, toxic gases, and other harmful chemicals. The filterless air cleaners do not have activated carbon filters; therefore, they cannot deal with smoke and household odors more efficiently.
Best Filterless Air Purifier – Expert’s Tips and Buying Guide
The filterless air purifiers use specific technologies like Thermodynamic TSS Technology or Negative Ions and kill the germs, bacteria, and viruses through an electrochemical process. They don’t take out the particles from the air; they just kill them and clean the air. This process can be helpful for some people, but others may not get benefits from it. Therefore, you should understand whether you need a HEPA filter for indoor air cleaning or an air purifier without any filter that can be sufficient for you and your family.
You need to check out first the size of your and the air purifier range before you are going to buy. If you have a small room, consider an air purifier that can cover medium to large-sized rooms. Moreover, most of the filterless air purifiers come with an area coverage of square feet (sq. ft.). This can include multiple rooms with open doors.
As you know, filter-free air purifiers do not use fans for throwing fresh air. Therefore, these air cleaning machines are highly energy efficient. On the other hand, you have to run these air purifiers 24 hours to gain maximum protection. So it is better to check the power consumption of an air purifier before purchasing.
Always remember with more fan power comes more noise level and energy consumption. Thanks to the latest technologies (Thermodynamic TSS Technology or Negative Ions), filterless air purifiers are ultra-quiet. When you are going to buy an air purifier that, don’t have HEPA filter or carbon filter, check or ask about the maximum noise level that the air purifier can produce.
Nightlight Turn-off Option
Most Filter-free air purifiers offer a nightlight option with different color ranges for peaceful sleep or relaxation. Always check if there is any turn off option available for these lights because these lights can be irritating for the eyes.