7 Best Filterless Air Purifiers – No Filter Replacement in 2022

Filterless air purifiers, with the help of modern thermodynamic technology, can efficiently remove airborne pathogens, dust, dander, allergens, chemicals, fumes, and many other impurities, leaving pure and clean air behind. Some of the filterless air purifiers may rely on UV- light, and ionizers for the removal of airborne contaminants.

Moreover, unlike air purifiers with carbon and HEPA filters, filterless air purifiers do not contain any filter and hence no extra replacement cost every year. Another advantage of filterless air purifiers is that they operate entirely silent. Therefore they are an ideal choice for bedrooms, libraries, classrooms, living rooms, nurseries, and offices.

You will find hundreds of options while roaming around in the market, and it becomes difficult to figure out which one is best for you. In order to find a solution we have selected seven best filterless air purifiers and here is the review

7 Best Filterless Air Purifiers In 2021

1. Best Overall: Airfree P1000 Filterless Air Purifier

Rating: 4.2 / 5

Airfree P1000 Filterless Air Purifier

Airfree P1000 air purifier is best at destroying 99% germs, organic pollutants, and allergens within an area of 465square feet. It uses the patented thermodynamic TSS technology for sterilization purposes. It uses high temperatures to kill the germ, just as in boiling water.

Being an indoor product, the air purifiers are supposed to be well-matched with the home decor, but unfortunately, it’s not the case with every model. With a diameter of 8.4-inches and a height of 10.4 inches, it’s a small compact machine that sits in a small corner of the room, and its elegant design perfectly integrates with your home decor.

In the first stage of sterilization, the sucked air is thrown into the ceramic heating chamber. The temperature inside the chamber goes as high as 400 ºF, which is enough to kill all types of bacteria, viruses, mold, and mildews.

In the second stage, the air is cooled down so that it can be released back into the room as fresh air. It can purify 14,000-20,000 liters of air every hour. So it’s quite evident that it will work perfectly within the supposed coverage area.

The most fantastic thing about this whole process is that there is no ozone production at all. As there are no UV-lights or ionizers that generate negative ions for cleaning purposes, it does not emit ozone at any stage of sterilization. Being an ozone-free device, it may grab the attention of asthmatic people.

Being Filterless means no moving parts, hence zero noise level during operation. It’s a completely silent air purifier, so there is no need to slow down the speed or turn it off while sleeping, studying, or watching a movie.

A P1000 air purifier is really easy to use. It features a single-speed mode at which it can work most efficiently, so you can forget this matter for months once you turn it on.

As it does not rely on any type of filters, so you don’t need to replace any of its parts, in this way, it saves you both money and time. In addition to that, the absence of filters makes it an energy-efficient product-the energy consumption of P1000 is only 43W.

One of its downsides is its overheating problem. Although it does not pose any serious threat, you will have to keep it out of the reach of pets and kids so that they may not come in contact with its outskirt.

Some users may find its night-blue light a bit distracting, but thankfully, it’s optional. You can turn it off if you don’t like it. Anyways this night-light creates an aesthetic and breathable atmosphere in the bedroom.

The other thing one should know before choosing this product is that this model doesn’t deal efficiently with pollutants like dust, smoke, pollen, or any other larger particles. So in case if you specifically want to deal with this, you can try a true-HEPA air purifier or the combination of both.

Airfree P1000 is the best filterless air purifier under this price range. It is completely silent, and an ozone-free unit, and also does not require the filter replacement, it is overall an excellent choice for indoor air purification.

  • Low energy consumption
  • Completely silent operation
  • User-friendly manual
  • No ozone-production
  • Elegant design
  • Overheating of outskirt
  • Can’t deal with larger particles like dust and hair

2. Best Budget: Airfree P2000 Filterless Air Purifier

Rating: 4.3 / 5

Airfree P2000 Filterless Air Purifier

After the great success of the P1000, Airfree has introduced the improved version that is called P2000. Built with sturdy plastic material, the P2000 comes in a smart, compact design that can blend with any home decor.

With a height of 10-inches and a diameter of 8.4 inches, it is a personal portable machine that weighs only 3.3lbs. At the top of this device, you will find a touch sensor that controls the nightlight and power cord.

As it does not rely on any kind of filters or UV-C lights, it uses patented Thermodynamic TSS technology. This is a 1-stage filtration mechanism in which the air is treated at a high temperature in a heat chamber.

The internal temperature goes as high as 400 ºF, which can kill all types of pathogenic bacterias, mold spores, dust mites, and viruses. After the sterilization, the air is immediately cooled down before being released back.

To get the optimal performance, it is necessary to make sure that its air cycle remains undisturbed. In simple words, it needs to be run continuously. The question that arises here is how much power does it consume?

You will be happy to know that the total power consumption of the unit is 43W, which is less than an average light bulb. In addition to that, it saves you both money and time as it does not require filter replacement.

Moving further, it is an environmentally-friendly air purifier as it does not rely on UV lights and Ionizers that release ozone. It’s the best filterless air purifier for people with asthma or other respiratory issues as it does not emit ozone at any stage. There is a beautiful nightlight that turns from white to blue when you adjust it from the top-mounted touch sensor.

It is quite disappointing that it cannot filter the particulate matter and dust particles, and smoke particles. You can also try out the best air purifiers with washable filters if you don’t want to get rid of filters altogether.

The feature that stands out most is its coverage area. It works great within an area of 550 sq.ft and promises the 99.9% removal of airborne disease-causing bacteria and viruses. While considering its price, it is the best filterless air purifier for larger-sized rooms.

  • Completely silent
  • Energy efficient
  • Ozone-free
  • Beautiful design
  • Can’t filter particulate and smoke

3. Best Mini: Airfree Tulip Filterless Air Purifier

Rating: 3.9 / 5

Airfree Tulip Filterless Air Purifier

Airfree Tulip air purifier comes in a new and innovative design that fits well with your home interior. The shape of this air purifier is like a tulip, and it comes in white color. It’s probably the lightest filterless air purifier, weighing only 2.3 lbs, so you can take it anywhere with you.

The is a filterless air purifier, so it relies on Patented Thermodynamic TSS technology that utilizes internal heat to destroy harmful airborne pollutants. The air enters the air purifier through simple convection and where it encounters the ceramic heat chamber.

The internal temperature of the chamber is 400 ºF. At this temperature, 99.97 %of germs, including viruses, bacteria, molds, and mildews, are killed. Moreover, this temperature is high enough to destroy organic pollutants like VOCs, odors, fumes, and many others.

After being treated in a heat chamber, the pure air is cooled down to room temperature before releasing it back into the environment. In this way, it does not affect the overall temperature of the room.

The Airfree Tulip has a straightforward user manual. You just need to plug in the machine, and it starts working. It works on a single, best speed and can run for months continuously. For optimal performance, it’s necessary to run the air purifier continuously for 24 hours.

Like all other filterless air purifiers by Airfree, this model is also completely silent. As it does not include any moving parts, it does not generate any kind of sound, and you won’t even notice if any machine is working there in the room or not.

For maximum efficiency, you need to run the machine continuously, but it won’t put an extra burden on your electricity bills. The energy consumption of Airfree Tulip is only 44W, so it is an extremely energy-efficient device.

The feature that stands out most is its multi-color fancy night light. The top-mounted fancy light creates a soothing atmosphere in the room. You can also choose from 10 different colors, which are red, blue, violet, brown, grey, yellow, green, rose, light blue, and orange.

The Tulip air purifier works efficiently within an area of 450 sq.ft, which is a pretty good figure.

The Airfree Tulip filterless air purifier is a completely silent, portable, and highly efficient purifier that promises the destruction of 99.9% germs and organic pollutants within a space of 450sq.ft. Moreover, its adjustable, anti-stress night light feature makes it a great choice.

  • Completely silent-no moving parts
  • Less power consumption
  • Adjustable night light
  • Lightweight device
  • Filterless-no filter replacement
  • Cannot trap larger pollutants like hair
  • Does Not work against particulate matter

4. Air Oasis 1000G3 Air & Surface Purifier

Rating: 4.5 / 5

Air Oasis 1000G3 Air & Surface Purifier

Air Oasis 1000G3 is not just an air purifier, but it is also a surface cleaner. It’s a filterless air purifier that can purify the air with an efficiency of 99.9%. The device deals perfectly with all types of pathogens, odors, VOCs, dangerous fumes, allergens, dust, and pet dander, leaving truly pure and better-smelling air behind.

For air sterilization, it uses AHPCO technology, UV-C light, and Bi-Polar technology instead of HEPA and carbon filters.

AHPCO stands for Advanced Hydrated PhotoCatalytic oxidation, and it is a modern technology that has replaced the previous UV-C stand alone lamps. A high-intensity UV lamp produces low levels of ozone in the presence of a hydrated catalytic matrix cell.

This ozone is converted into peroxide and hydroxyl ions by the help of metallic catalysts. In this way, an extremely aggressive oxidation atmosphere is created, which can kill all types of molds, bacteria, viruses and can destroy VOCs, odors, and many other air pollutants.

Bi-polar technology is another latest indoor air purifying technology that utilizes negative and positive ions for purification purposes. Once the ions are generated, they are equally spread into the coverage area where they can target almost all types of contaminants.

These ions negatively affect the reproductive ability of harmful microorganisms, including mold, bacteria, and viruses. In this way, the overall load is shrunk in the air. The VOCs and other organic pollutants are also destroyed as these charged particles can break down the carbon chains.

Unlike air purifiers with filters, these air purifiers don’t wait for the pollutants to get inside the machine and target the pollutants at their position. Hence it efficiently cleans the surfaces as well. So we can say that this air purifier can also deal with risks and concerns related to COVID-19.

Another amazing feature of this air purifier is that it is extremely silent. The maximum noise level it creates is between 20-30 dB, which is quite peaceful for any room. It can be used to clean the air within an area of 300 sq.ft with very low power consumption.

With the advanced hydrated photocatalytic oxidation and bi-polar ionization technology, G3 1000 has the capability to deal with almost all types of air-borne and surface pollutants. It’s a perfect choice for the places that can have loads of mold spores, disease-causing bacterias, and organic pollutants.

  • Highly efficient
  • AHPCO and Bi-Polar technology
  • Filterless – means easy maintenance
  • Purifies both air and surfaces
  • Ozone production
  • Expensive

5. Airfree Iris 3000 Air Purifier

Rating: 4.2 / 5

Airfree Iris 3000 Air Purifier

Airfree Iris 300 is another silent air purifier that keeps your indoor air fresh and healthy. It comes in black and white color with a simple, sleek design that suits well with your home decor. This 10-inches tall machine with dimensions of 8.5×8.5 inches is a real space saver if you own a small room.

The feature that makes it the best filterless air purifier is its coverage area. It can cover a large space upto 650 sq.ft, which is amazing. The air purifiers use exclusive Thermodynamic TSS technology to kill all types of harmful germs, pet danders, and other harmful airborne impurities.

It doesn’t use any fans. Instead, the air is sucked in through convection. In the first step, the air is treated in a heat chamber where the temperature is raised upto 400 ºF. The beauty of this simple process is that it actually kills all types of airborne mold, bacterias, and viruses.

This sterilized air is then immediately cooled down before being thrown back into the room so that the user won’t feel any temperature change in the air.

Ozone is one of the significant concerns related to air purifiers. It’s a dangerous gas as described by EPA, and can trigger asthma and many respiratory problems. Thankfully, Iris 3000 by Airfree is a completely ozone-free air purifier, as it does not include UV-C lamps and any ionizers.

Airfree is a name that brings you extremely silent air purifiers. This is also true in the case of Iris 3000. As there is no fan or any other moving parts in this air purifier, it operates completely silent, so it is the best choice for libraries, classrooms, and bedrooms.

You will get a relaxing top-mounted night light with nine adjustable colors. You can select your favorite color and even intensity to create a soothing atmosphere.

For better performance, you need to run this air purifier consistently so that the air cycle doesn’t get interpreted. The power consumption of this unit is 53W, which is reasonable while considering its total coverage area.

One of its downsides is that it doesn’t capture the actual particulate matter and larger particles. If you are dealing with dust and smoke, it may not work for you.

With a very low energy consumption, large space coverage, and high efficiency, the Airfree Iris 30000 is the best budget air purifier currently available in the market. The beautiful colors of its nightlight create a sensation of peace and joy at night.

  • Completely silent
  • No ozone emission
  • No filter replacement cost
  • Large coverage area-650 sq.ft
  • Doesn’t Capture particulate matter
  • Does not include air quality sensor

6. Airfree T800 Filterless Air Purifier

Rating: 4.2 / 5

Airfree T800 Filterless Air Purifier

The Airfree T800 is another amazing member of the Airfree filterless family that comes at an affordable price, which is less than$100. It is a compact model with a slim and sleek design that occupies very little space in your room.

The Air Circulation is made possible through inflow and outflow vents on the top. The dimensions of this unit are 6.5×6.5 and it is 10-inches tall. This bullet-shaped slim model weighs only 1.5 lbs so that you can carry this model anywhere with you.

Like all other Airfree purifiers, it also relies on Thermodynamic TSS technology for air cleaning purposes. The inside temperature is raised to 400 ºF that can kill all harmful bacteria, dust mites, molds, and viruses. After the sterilization, the hot air is immediately cooled down before being sent back into the atmosphere.

The coverage area of this unit is 180 sq.ft which is the size of a small room. As it does not require any filter replacement or cleaning it is a real time saving and cost-effective product.

In addition to that, despite the continuous operation, it consumes very less power, hence making it a cost-effective approach for air purification.

No moving parts and fans mean no noise generation. Yes, the whole unit is completely silent, and you won’t even notice whether there is a machine working or not inside a room.

It is an ozone-free air purifier as it does not emit ozone at any stage of sterilization. So it’s the best affordable air purifier for people with asthma or other respiratory problems.

  • Zero noise level
  • No filter replacement cost
  • Zero ozone emission
  • Less power consumption
  • Affordable
  • Does not work for particulate matter
  • Relatively small coverage area

Of course, the reason to buy this air purifier is its price. The Airfree T800 boasts many excellent features that are usually found in the expensive models. Taking its price into consideration, it is one of the most wanted air purifiers currently available in the market.

7. Airfree Onix 3000 Air Purifier

Rating: 4.5 / 5

Airfree Onix 3000 Air Purifier

Airfree Onix, or simply P3000, is one of the most powerful air purifiers in the Airfree family. It weighs 3.3 lbs and 10.4 inches taller with a diameter of 8.4 inches. It’s a compact device that is extremely portable; for maximum efficiency, it is recommended to use it in one place so that its air cycle remains uninterrupted.

It relies on patented Airfree Thermodynamic technology for sterilization. The hot ceramic core harts upto 400 ºF at which 99.9% pathogens, viruses, pet danders, molds, and dust mites. The hot air is cooled down before being sent into the environment.

The total space coverage of P3000 is impressive. It works great within a space of 650sq.ft. Although it’s a larger unit and needs to run continuously for best performance, it consumes very less power-only 52 watts. This is an acceptable figure for a unit that covers such a large space.

The absence of a fan and any moving parts makes it a completely silent machine. Moreover, it is also an ozone-free air purifier, in fact, it reduces the ozone levels by 26% according to the results of third-party lab tests.

Although it seems a bit overpriced at first glance, it is an overall cost-effective approach because it saves annual filter replacement cost and also consumes very little power.

Some people complain about its efficiency as it does not work for the smoke, dust, and larger particles. Before buying this device one must know that it is a filterless air purifier that cannot capture these particles.

Well, the P3000 is the most efficient and powerful filterless air purifier on the list. It guarantees the 99.9% removal of allergens, airborne pathogens, and viruses, giving you a healthy and fresh breathing environment.

  • Large area coverage
  • Completely silent
  • No annual filter replacement cost
  • ozone -free unit
  • Does not work for particulate matter
  • Outskirt may heat up with time

Final Verdict

In the end, we can conclude that filterless air purifiers have many advantages over conventional air purifiers with HEPA and carbon filters. Most of the filterless air purifiers are entirely silent and ozone-free, so they can be the best option for indoor air purification.

We are hopeful that after reading this review you would be able to figure out the best model for you, to make your way easy. At the end here are our top three recommendations.