Best Filterless Air Purifier Buying Guide 2021

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Best Filterless Air Purifier

Getting a filter-free air purifier is one of the first upgrades you should do to your home. It is low maintenance, and it’s a long-term investment that keeps everyone in good health.

An air purifier does many things: it removes airborne particles, bacteria, viruses, germs, smoke dust, pet dirt, odor, allergens released by plants and animals, and cigarette smoke. It can also circulate the air even though it is not as good as an attic fan.

We have compiled our top 4 picks for the best filterless air purifiers in the market today. All items compared with our specifications chart, and each one has an overview below.

Top Recommended Filterless Air Purifiers

These top picks will get rid of the air pollutants in your home like no other. Scroll down further to read our buyer’s guide.

Product NameCoverage (sq. ft.)Dimensions (inches)Stand-out features
Airfree Air Purifier Onix30006508.4 x 8.4 x 10.4Completely silent, zero maintenance, compact size
Ivation Ozone Generator Air Purifier3,50012.5 x 11 x 15Cherry wood exterior, uses activated oxygen to deodorize
Envion Ionic Pro 90IP01TA01W Turbo Ionic Air Purifier5007.5 x 28.5 x 9.5Uses less power than a fluorescent bulb, easy-to-clean front blades
Airfree T800 Filterless Air Purifier1805.1 x 5.1 x 12No use of ions, ozone, or UV light, compact size

1. Airfree Air Purifier Onix3000

Airfree Air Purifier Onix3000

If you are always traveling and want an air purifier that can fit in your bag, the award-winning Airfree Onix3000 delivers impressive power for its small profile.

This unique purifier does not emit different levels of ozone, ions, and UV light. Instead, it uses the brand’s patented Thermodynamic TSS Technology, which heats the air contaminants (200 ºC) to destroy them. ISO 17025 laboratories in 6 different countries have tested this technology.

This one provides a 100% purification percentage for its prescribed coverage area. After heating, the air is immediately cooled and then released back.

You will also save money in the long run with this purifier. Not only does it not need filter replacements, but it also has a low power consumption rated at 51W. The machine will also aid in sleeping. Aside from cleaning the air you breathe, it is completely silent and has a harmonic night light that doesn’t interrupt your sleep.

For those who need to purify a small room using a one-of-a-kind machine, this is for you. It may not be for conference halls or event rooms, but it is ample for the average household user.

Pros
  • Inconspicuous, zero noise levels, and adapting night light
  • 100% purification to clean the air well
  • Energy consumption is efficient
  • Reduces ozone emission
Cons
  • This silent air purifier has a small coverage area.

2. Ivation Ozone Generator Air Purifier

Ivation Ozone Generator Air Purifier

You want an air cleaner or purifier that looks good and matches the decor of your house? The Ivation Ozone Generator Air Purifier has a stainless steel cabinet and a cherry wood exterior that makes it a statement piece in your home.

It releases more than a million negative ions to purify the air indoors of up to 3,500 square feet, which makes it the top-rated filterless air purifier in this list in terms of coverage. You will immediately a crisper and cleaner air every time you breathe in, thanks to the negative ion generator.

The machine also keeps dust at bay for those with sensitive skin. Other than that, it deodorizes your room by releasing activated oxygen with powerful oxidizing properties at 360 mg/hr.

It has two mechanical knobs, which are better for fine-tuning the settings. LED indicators make it so that you can operate the machine without light. You need to insert the ceramic plate in the device before you can start using it.

Also, you do not have to worry about the machine to malfunction after days of straight use. It is designed to handle all-day use.

Pros
  • Has a more powerful motor and quieter fan than its predecessors
  • Releases either negative ions or activated oxygen at 350 mg/hr
  • Attractive and robust design
Cons
  • The ozone generator is still too strong, even in the lowest settings.

3. Envion Ionic Pro 90IP01TA01W Turbo Ionic Air Purifier

Envion Ionic Pro 90IP01TA01W Turbo Ionic Air Purifier

For those looking for a stationary purifier that captures 99.9% of all pollen, dust mites, pet dander, and irritants in the air in less than 60 minutes, this one’s for you.

The Envion Ionic Pro 90IP01TA01W Turbo Ionic air purifier is an easy-to-clean machine due to its front-loading blades. Since you don’t need a filter replacement, this machine is low maintenance.

It is also has a low power consumption, which is rated the same as a night light and less than a compact fluorescent bulb. The sleek vertical design of this machine makes it easy to fit in any room and has a more efficient dispersion spread.

This air purifying technology is ideal for those living with people with skin and breathing problems. Having a clean air avoids asthma or allergies episode which could lead to buying costly skin lotion and medicine.

Do note that while these aren’t true HEPA filters, they are more than enough for home use.

Pros
  • Front-loading blades are easy to clean
  • Captures 99.9% of contaminants in less than an hour
  • The sleek design makes it easy to fit in tight spaces
Cons
  • These are not High-Efficiency Particulate Arresting or HEPA air filters

4. Airfree T800 Filterless Air Purifier

Airfree T800

Like the first purifier in this list, the Airfree T800 Filterless uses the patented Thermodynamic TSSTM Technology, which does not use negative ions or UV light.

Instead, it heats all captured contaminants and kills it effectively in a smaller room. This filterless unit is completely silent, making it perfect for confined spaces.

Don’t worry about maintenance costs with this machine, too. You don’t need filters, plus it is easy to clean – a good pick for those looking for their first air purifier.

It is both portable and durable; that’s why it’s an excellent travel companion. The machine is designed and made in Europe and tested for “real life” usage by world-renowned institutions and ISO 17025 laboratories in different countries.

This is a good pick for your studio type apartment or your small office cubicle. Usually, this machine is paired with a purificator with larger coverage and placed in the common area while this machine is put in a separate room.

Pros
  • 100% efficiency
  • Portable and travel-friendly size
  • Silent and energy efficient
Cons
  • Not suitable for large rooms

How These No-filter Air Purifiers Work if They Don’t Have Filters

filter-vs-filterless-diagram

Here are some useful explanations to help you better understand what makes a non-filtered air purifier different but still useful.

A filterless air purifier is a machine that directly disables allergens and irritants in the air of a certain amount of area. There are the air quality ionizer and the electrostatic precipitator.

The former works by having two separate electrically charged plates: one attracts and disables the contaminants by sucking the air via a fan. In contrast, the other one charges all incoming particles, such as viruses, bacteria, and other microorganisms, cleaning the air.

The latter is more powerful. Other types of filterless air purifiers use UV light to kill germs, bacteria, viruses, and mold spores, resulting in better quality air. Some use a process called photocatalytic oxidation, which uses UVC irradiation and titanium dioxide to transform contaminants into water, carbon dioxide and waste matter.

What is the Difference Between Filterless and Filter Air Purifier?

filter-vs-filterless-purifier

A filtered air purifier works better than its filterless counterpart.

filtered air purifier sucks in the polluted air. It uses a filter to remove impurities and particulates, then releases back the cleaned air. This type of air purifier is more efficient and powerful since it physically removes the contaminants, leaving the air with no trace of dirt.

Unless you get something with washable filters, you need to regularly replace it just like you would an air conditioner or a vacuum machine. This kind requires more maintenance and is more costly than a filterless air purifier.

On the other hand, a filterless air purifier works by electrically charging the particles, destroying their molecular integrity, and breaking them down. These contaminants do not leave the air – they get “deactivated,” making them powerless.

Is a Filterless Air Purifier Safe?

Yes. While not as efficient as a filtered air purifier, a filterless one still does its job in getting rid of airborne pollutants using a low cost, low maintenance, and compact machine.

If you are looking for an air purification machine for a smaller room and do not want to overspend, a filterless air purifier is your option.

The Verdict

The experience of filterless air purification system at home is different with each item here. For a small room, you can choose either of the two Airfree air purificators. They heat the captured air to destroy all contaminants.

However, if you are looking for one to use in large areas, the Ivation Ozone Generator Air Purifier is the right choice since it has a room coverage of more than 3,000 square feet. The Envion Ionic Pro 90IP01TA01W Turbo Ionic Air Purifier is better for an office setting where space is limited.

There you have it, trustworthy filterless air purifier reviews and comprehensive buying guide for you. Remember that these filterless air purifiers don’t disappoint!

Passtools.com author Anastasia Russell
Anastasia is a 26-year-old blogger who always motivated to observe the ways humans interact with technology. She is currently undertaking a master degree program at the Uppsala University specializing in Human-Computer Interaction & Design Program.
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