The Best Filterless Air Purifier: 9 Top Choices for 2024

Air purifiers have become an essential home appliance in recent years due to increased levels of indoor pollution and allergens. These devices help in maintaining good indoor air quality by capturing and removing particles like dust, pollen, pet dander, and even airborne bacteria and viruses. Among the various types of air purifiers available in the market, filterless air purifiers offer an innovative and efficient alternative to traditional ones that require regular filter replacements.

Filterless air purifiers use advanced technologies like electrostatic precipitation, ionization, or photocatalytic oxidation to clean the air without the need for replaceable physical filters. This not only reduces maintenance costs and efforts but also ensures consistent performance over time. Additionally, filterless air purifiers are often quieter and more energy-efficient compared to their counterparts with filters.

When choosing the best filterless air purifier, it’s essential to consider factors such as room size compatibility, noise level, energy consumption, and the type of indoor pollutants it can effectively remove. Individual needs will determine which air purifier technology is most suitable – for instance, a device featuring ionization may be better suited for people with allergies, while photocatalytic oxidation may be more effective in removing volatile organic compounds (VOCs) and odors.

With these considerations in mind, we have devoted our time and effort into researching and analyzing the best filterless air purifiers available, allowing you to make an informed decision in achieving a cleaner and healthier living environment.

Top 3 Best Filterless Air Purifiers

AirFree T800 Filterless Air Purifier

Airfree P2000 Filterless Air Purifier

Airfree Tulip Filterless Air Purifier

We have compiled a list of the best filterless air purifiers for you to consider. These products will efficiently purify the air in your home or office without the need for constant filter replacements. Explore our top picks below to find the right fit for your needs.

AirFree T800 Filterless Air Purifier

AirFree T800 Filterless Air Purifier

This AirFree T800 is a low-maintenance, energy-efficient choice for small rooms, but it may not be suited for larger spaces or if you’re sensitive to heat.


  • No filter replacement needed
  • Silent operation
  • Compact and portable


  • Emits heat during operation
  • Not suitable for larger rooms
  • Wired design may cause stability issues on hard floors

After using the AirFree T800 Filterless Air Purifier in our home, we can confidently say that it offers a natural way to clean the air without all the additional costs and maintenance of other air purifiers. The patented Thermodynamic TSS technology uses heat to remove allergy-causing microorganisms, making it an excellent choice for those who suffer from allergies.

The filterless technology not only eliminates the need for filter replacements but also the need for regular maintenance. All you need to do is occasionally wipe the exterior with a cloth to keep it clean. Furthermore, it doesn’t emit ions, UV light, or any other harmful wastes back into the air, which is a huge plus in our book.

While we appreciate the compact, modern design which saves space, it’s worth mentioning that this particular model is best suited for small rooms. If you need an air purifier that can handle a more extensive area, you might want to consider other AirFree machines designed for larger spaces.

Another aspect worth noting is that, although the unit is designed to be energy efficient and eco-friendly, it does emit heat during operation. If you’re sensitive to heat or live in a hot climate, this might be a drawback for you. Additionally, the wired design might cause stability issues on hard floors, as one leg may not sit evenly when placed on a solid surface.

In conclusion, the AirFree T800 Filterless Air Purifier provides an easy-to-use, low-maintenance solution for those in need of a purifier for a small space. However, if you require air purification in a larger room or are sensitive to heat, you might want to explore other options within the AirFree product line.

Airfree P2000 Filterless Air Purifier

Airfree P2000

The Airfree P2000 offers an efficient, quiet, and low-maintenance option for those seeking a filterless air purifier to improve their indoor air quality.


  • Patented Thermodynamic TSS Technology removes various allergens and pollutants
  • Silent operation allows for use in various settings, including bedrooms and offices
  • No additional costs for filters or replacement parts


  • Requires continuous operation for optimal benefits
  • Limited to a coverage area of up to 550 sq. ft.
  • Blue glow night light may not be ideal for light-sensitive sleepers

After recently using the Airfree P2000, we appreciated its modern design and ease of use. Straight out of the box, setup was as simple as plugging it into an outlet and allowing it to work its magic. We took note that, for the best purification effects, it’s essential to keep the device running continuously in open spaces with ample airflow.

What truly impressed us was the absence of noise while the purifier was functioning. This makes it an excellent fit for bedrooms, nurseries, and offices where noise-sensitive individuals may be present. The silence is achieved through its filterless air purification method, which relies on boiling water to sterilize the air and a ceramic core to effectively treat up to 550 sq. ft. of space.

However, this Airfree P2000 comes with certain drawbacks. For those with larger homes or rooms that exceed 550 sq. ft., a single unit may not provide sufficient coverage. Another minor issue is the blue glow night light, which may disturb those sensitive to light during sleep.

In conclusion, the Airfree P2000 is a solid choice for those seeking a low-maintenance, silent, and effective air purifier that eliminates various allergens and air pollutants. However, its coverage area may be limiting for some users, and the blue glow night light could be an inconvenience for certain individuals.

Airfree Tulip Filterless Air Purifier

Airfree Tulip Filterless Air Purifier

The Airfree Tulip Filterless Air Purifier is a solid choice for people seeking cleaner air, with its effective bacteria and allergen removal and low-maintenance features; however, its minor flaws might discourage some buyers.


  • Patented Thermodynamic TSS Technology
  • Maintenance-free filtration system
  • Eco-friendly and low power consumption


  • Limited coverage area
  • No visible result of filter effectiveness
  • Unclear real-world impact on allergy relief

After using the Airfree Tulip Filterless Air Purifier in our living space, we can confidently say that this compact machine is efficient in clearing the air around us. Its Patented Thermodynamic TSS Technology ensures that it can eliminate microorganisms like bacteria, viruses, mold, and allergens without the need for filters, resulting in hassle-free maintenance. The absence of complicated parts and filters allows us to avoid spending extra money on replacements, and the fact that it doesn’t emit any ozone makes us feel more secure with its safety.

The silent operation of this purifier is one of its standout features, making it suitable for bedrooms, nurseries, and offices, as well as other quiet areas in our home. Its sleek tulip shape and built-in night light with ten color options add a nice touch to any room while doing its job of keeping our air clean.

However, we noticed that the Airfree Tulip Filterless Air Purifier might not be suitable for larger rooms, as its coverage area is limited to 450 square feet. Additionally, it’s challenging to determine the purifier’s effectiveness without visible proof since there are no filters to inspect. This might make potential buyers question whether it is worth the investment. Finally, although some users experienced allergy relief, others did not, indicating that its ability to alleviate allergies might be inconsistent.

In conclusion, the Airfree Tulip Filterless Air Purifier is a reliable, cost-effective, and environmentally friendly option for those seeking cleaner air in their homes. However, potential buyers should consider its coverage area limitations and the lack of tangible evidence demonstrating its effectiveness before making a purchase.

Airfree Iris 3000 Filterless Silent Room Air Purifier

Airfree Iris 3000

The Airfree Iris 3000 is a top choice for those seeking a silent, filterless air purifier with a sleek design and efficient performance.


  • Quiet, filterless operation
  • Effective at removing allergens and pollutants
  • Low energy consumption


  • Limited to small spaces up to 650 sq. ft.
  • Slightly warm air output
  • Low on additional features

Having recently experienced the Airfree Iris 3000 Filterless Silent Room Air Purifier, we can confidently recommend it for those looking to improve their indoor air quality. Perfect for bedrooms, nurseries, and offices, this compact purifier is easy to set up, simply plug it in and let it work.

The patented Thermodynamic TSS Technology uses heat to remove various microorganisms and allergens, while also avoiding the need for filter replacements. By running silently, this air purifier will not disrupt your daily life, which makes it perfect for use in a bedroom or workspace.

However, the Iris 3000 performs best in spaces up to 650 sq. ft., so it may not be suitable for larger rooms. Additionally, the output air is slightly warm, which should be taken into consideration when choosing a location for the purifier. Lastly, it would be even more beneficial if it had more additional features such as a smart app or a timer setting.

Overall, the Airfree Iris 3000 offers an attractive, efficient, and low-maintenance solution for smaller living spaces. With its filterless technology and silent operation, you can enjoy a more comfortable indoor environment without the hassle of filter replacements or disruptive noise.

Airfree Duo – Filterless Air Purifier

Airfree Duo - Filterless Air Purifier

We highly recommend the Airfree Duo for those seeking efficient air purification and odor elimination without the need for filters.


  • Highly effective TSS technology
  • Odor eliminator feature for stubborn smells
  • No filter replacements needed


  • Noisy performance noted by some users
  • Not suitable for very large rooms
  • Possible heat production

We have personally experienced the benefits of the Airfree Duo, a filterless air purifier with unique patented technology that uses heat to remove microorganisms and allergens from the air. The TSS technology in this purifier was able to eliminate up to 99.99% of bacteria, pollen, mold, and pet dander allergens in our home – all while keeping the environment fresh and odor-free.

The odor eliminator capsule truly sets this purifier apart, as it removed even the stubborn cooking smells our family often encounters. We appreciate the option to turn the odor eliminator off when the air is fresh, conserving energy and extending the life of the purifier.

One of the major selling points for us was the filterless design, as there are no costly filter replacements or constant maintenance involved. Additionally, the Airfree Duo is compact and energy-efficient, making it a practical addition to any room.

However, some users may find the device noisy during operation. While not particularly loud in our experience, those with sensitive hearing or a need for a completely silent environment may want to consider this factor.

Additionally, the Airfree Duo may not be suitable for everyone’s room size. It effectively covers up to 350 sq ft, so those looking to purify the air in larger spaces may need to consider multiple units or opt for a larger model.

Lastly, we noticed that the unit generates some heat while in use, which might be a concern for sensitive individuals or during warm weather months. Despite this, we believe the Airfree Duo is a fantastic investment for those who value clean air and odor elimination without the constant expense and maintenance of filters.

Airfree P3000 Filterless Silent Air Purifier

Airfree P3000 Filterless Silent Air Purifier

We recommend the Airfree P3000 for its effective filter-free technology and silent operation, especially for allergy sufferers.


  • Effective patented Thermodynamic TSS Technology
  • Silent operation suitable for bedrooms and offices
  • Low energy consumption and no need for filters


  • Can make the room feel warm during operation
  • Difficult to gauge air quality improvement without a sensor
  • May not be suitable for larger rooms

Having used the Airfree P3000 Filterless Silent Air Purifier, we have experienced a noticeable reduction in allergy symptoms. This air purifier works using patented Thermodynamic TSS Technology, which uses heat to remove various microorganisms, dust, pollen, and other allergens from the air.

One of the most impressive features of this air purifier is its silent operation, which makes it ideal for use in bedrooms or offices. We placed it in different rooms and never noticed any noise coming from the unit. We appreciate that it doesn’t emit harmful ions or UV light, making it safe for our family and pets.

The Airfree P3000 is energy-efficient and filterless, saving us money on replacement filters. However, we noticed that the room tends to feel warmer while the air purifier is in use. While not a deal-breaker, it could be a concern for some users. Additionally, without a built-in air quality sensor, it’s difficult to measure the air quality improvements conclusively.

Finally, the Airfree P3000 works best for rooms up to 650 sq ft. Although it performed well in our small living room, bedrooms, and office spaces, it may not be as effective when used in larger rooms.

In conclusion, we believe the Airfree P3000 Filterless Silent Air Purifier is a worthwhile investment, especially for allergy sufferers. Its filterless operation and silent performance make it an excellent addition to bedrooms and offices, while its patented technology efficiently removes allergens and microorganisms from the air.

AIRFREE Lotus Filterless Silent Air Purifier

AIRFREE Lotus Filterless Silent Air Purifier

Great for those who prioritize silence and low maintenance, the Airfree Lotus filterless air purifier effectively removes allergens without a fuss.


  • Unique, aesthetically pleasing design
  • Completely silent operation
  • No filters or replacement parts


  • High initial cost
  • Difficult to measure effectiveness
  • Not suitable for individuals with severe allergies

We recently had the chance to test out the AIRFREE Lotus Filterless Silent Air Purifier and came away with mixed feelings. One of the most appealing features of this purifier is its unique lotus flower-inspired design. It adds a touch of sophistication to any room, and the customizable night light with its 10 adjustable colors was a pleasant addition.

The Airfree’s patented thermodynamic TSS technology and filterless design make it completely silent, which is fantastic for those who value noise-free environments. This technology uses heat to sterilize microorganisms and allergens without emitting ozone, ions, or UV light. It’s perfect for smaller rooms up to 650 square feet, and given that no filter replacement is required, the maintenance cost is low.

However, there are a few shortcomings we noticed. Firstly, the initial cost of this air purifier is quite high for the features it offers. Secondly, for those with severe allergies, the AIRFREE Lotus may not be as effective as other air purifiers with HEPA filters. Lastly, it can be challenging to measure its effectiveness as there is no tangible indication of the air quality within the room. The only way to know if it’s truly working is by gauging how you feel in the room over time.

In conclusion, the AIRFREE Lotus Filterless Silent Air Purifier is a great choice if you value a noiseless, low-maintenance air purifier with a distinctive design. However, if you require a more heavy-duty, scientifically proven solution for severe allergy symptoms, this might not be the best option for you.

Hamilton Beach TrueAir Air Purifier

Hamilton Beach TrueAir Air Purifier

Upon using the Hamilton Beach TrueAir Air Purifier, we believe it’s a great value for those looking to improve the air quality in smaller spaces.


  • 99% HEPA-grade filtration performance
  • Compact and stylish design
  • Easy-to-clean, permanent filter


  • Limited to smaller rooms (up to 160 sq ft)
  • White color option comes with grey trim
  • Relatively louder on the highest setting

We recently tried out the Hamilton Beach TrueAir Air Purifier in our office and were pleased with its ability to reduce allergens, dust, and pollen. Its compact design allowed us to position it both vertically and horizontally, fitting well in various spaces. While using this air purifier, we appreciated the stylish look it added to the room, blending seamlessly with our décor.

One thing to note is that this air purifier is best suited for smaller spaces, as it can efficiently cover up to 160 sq ft. If you’re planning to use it in a larger area, you may need to consider multiple units or a more powerful purifier. However, for its size, it effectively captures 99% of allergens, dust, and pollen with its HEPA-grade filter.

A significant advantage of the Hamilton Beach TrueAir Air Purifier is its permanent filter, which can easily be vacuumed clean. This feature eliminates the need for recurring filter purchases, making it a cost-effective choice. That being said, we noticed that the white color option we chose came with grey trim, which may be a minor downside for those particular about the color aesthetic.

When it comes to noise levels, the air purifier remains relatively quiet on its “Whisper Clean” setting. However, on the highest setting, we found it to be noticeably louder. If you plan to use it during the night, the medium or lowest setting may be more suitable to avoid disturbance.

In conclusion, we highly recommend the Hamilton Beach TrueAir Air Purifier for those looking to improve air quality in smaller rooms. Its stylish design, high performance, and permanent filter make it not only a functional choice but an economical one as well.

Nuwave Oxypure Air Purifier Pro

Nuwave Oxypure Air Purifier Pro

The Nuwave Oxypure Air Purifier Pro is a solid choice for those in need of a filterless air purifier, providing outstanding airflow and purification in large spaces.


  • Excellent coverage for large rooms up to 2,934 sq ft
  • Five-layer protection with washable and reusable filters
  • Smart device and WiFi capability for remote control through an app


  • A bit on the heavier side (26 pounds)
  • Filters may have a lifespan shorter than advertised
  • Noisy on higher fan speeds

The Nuwave Oxypure Air Purifier Pro recently found its way into our home, and we’ve been impressed by its performance. The purifier is suitable for large rooms and open spaces, providing exceptional airflow and purification up to 2,934 sq ft in size. We’ve noticed a significant improvement in air quality since we started using it, and it has become an indispensable part of our daily routine.

One of the standout features of this air purifier is its remarkable five-layer protection system. The stainless-steel pre-filter does an excellent job capturing large particles and allergens, while the ozone emission removal filter eliminates toxic ozone. The HEPA/Carbon and Bio-Guard filters work together to remove minute airborne particles and odors from our home. Even better, the stainless-steel pre-filter and Bio-Guard filter are washable and reusable for up to 20 years, which means lower maintenance costs over time.

A significant advantage of this air purifier is its smart device and WiFi capability. We can monitor and control the air quality in our home remotely through the Nuwave Connect app, which is compatible with both Android and iPhone. It’s truly convenient, and it provides us with peace of mind knowing that we can manage our home’s air quality from anywhere.

However, there are a couple of drawbacks that we noticed while using the Nuwave Oxypure Air Purifier Pro. First, it’s a bit heavier compared to other air purifiers, weighing in at 26 pounds. Additionally, the filters may not last as long as the manufacturer claims, and it can get quite noisy on higher fan speeds. Nevertheless, the benefits of this air purifier outweigh these minor inconveniences, and we highly recommend it to anyone looking for a filterless air purifier for their large living spaces.

Buying Guide

When it comes to finding the best filterless air purifier, there are several factors that you should consider to ensure that you make the right choice for your needs. In this buying guide, we will explore some of the key features and aspects you should look for in an air purifier.

Noise level

One of the first things you should consider is the noise level of the air purifier. You’ll likely be using this device in rooms where you spend a lot of time, so it’s important to make sure it operates quietly. Some purifiers can produce as little as 20-30 decibels (dB), which is similar to a whisper, while others can generate noise at levels upwards of 50 dB. Be sure to choose a product that won’t disrupt your peace and quiet.

Room Size

Next, consider the size of the room where you plan to use the air purifier. Filterless air purifiers have different coverage areas, and you’ll want to choose one capable of cleaning the air in your specific space. Measure the square footage of your room and look for a purifier that can handle that area.

Here are some general guidelines for room coverage:

Room Size (sq. ft.)Coverage Needed

Energy Efficiency

Energy efficiency is an important aspect to consider, as it will affect the ongoing cost of using your air purifier. Look for products with ENERGY STAR ratings, which means they have been tested and meet certain standards for energy efficiency. This will help ensure that you are not only contributing to a cleaner environment but also keeping your energy bills as low as possible.

Maintenance and Cost

Since filterless air purifiers don’t require filter replacements, their overall maintenance is typically lower than traditional air purifiers. However, certain components like UV-C bulbs or collection plates might need occasional cleaning or replacement. It’s essential to understand the maintenance requirements and costs associated with the specific purifier you choose so you can be prepared to keep it running effectively.

Additional Features

Finally, consider any additional features you may want in an air purifier. Some devices come with timers, remote controls, or even smart features that integrate with your home automation system. While these features may not directly impact the device’s air purification performance, they can add convenience and functionality to your experience.

By keeping these factors in mind and thoroughly researching your options, you can confidently choose the best filterless air purifier for your needs.

Frequently Asked Questions

What are the top filterless air purifiers for allergy sufferers?

Some top filterless air purifiers that are effective for allergy sufferers include the Airfree Onix 3000, the Ionic Pro Platinum, and the Air Oasis 1000G3. These models excel at removing allergens such as pollen, dust, mold spores, and pet dander from the air, making them excellent choices for individuals with allergies.

How effective are filterless air purifiers in removing smoke?

Filterless air purifiers can be effective in removing smoke particles and odor from the air, but their efficacy can vary depending on the specific technology employed. Photocatalytic oxidation (PCO) and ozone-based purifiers are particularly effective at neutralizing smoke odor. However, it is important to ensure that the ozone levels produced by these devices remain within safe limits, as excessive exposure to ozone can be harmful to human health.

What are the main advantages of a filterless air purifier?

Major advantages of filterless air purifiers include lower maintenance costs and less environmental waste. They don’t require filter replacement, which saves money and reduces waste from disposable filters. In addition, these devices are often quieter than their filtered counterparts, as they don’t rely on fans to circulate the air.

How do filterless air purifiers compare to HEPA purifiers?

Filterless air purifiers and HEPA purifiers both have their pros and cons. While HEPA filters effectively remove particles as small as 0.3 microns from the air, they require regular replacement and can be more expensive to maintain. Filterless purifiers, on the other hand, generally have lower maintenance costs but may be less effective at capturing ultrafine particles in some cases.

Are there any popular brands that manufacture filterless air purifiers?

Leading brands known for manufacturing filterless air purifiers include Airfree, Ionic Pro, Air Oasis, and Airocide. These brands offer various models designed to cater to different room sizes and specific needs, such as allergy relief or smoke removal.

What is the maintenance process for filterless air purifiers?

The maintenance process for filterless air purifiers is relatively simple compared to their filtered counterparts. As there are no filters to replace, the main tasks involve keeping the device clean and ensuring proper ventilation. Regularly wiping down the exterior surfaces, and occasionally cleaning any components as recommended by the manufacturer will help to maintain optimal performance.

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