What's the Best Air Purifier Without Filters ?| Dustfreerooms
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Best Air Purifier Without Filters

Best Air Purifier Without Filters


The Ionic Pro Platinum (TA750)  is arguably the best air purifier without filters on the market today. It works by ionizing pollutants such as bacteria, mold spores, dust mites, and pollen. A permanent, washable filter collects these particles. A “Clean Filter” indicator reminds you to clean this filter after every 8 weeks. It also features a permanent, washable prefilter. This component traps pet dander, pet hair, lint and other large materials.


Even though the Ionic Platinum uses filters, it’s as though it were totally filterless. Why do I say that? It’s because with this device, you’ll never buy replacement filters ever again. I included this option in these reviews because it’s different than other air purifiers with washable filters. Most air purifiers with washable filters actually use washable filters that MUST be replaced down the road. But you’ll never need to change the prefilter and permanent washable filter used by the Ionic Pro Platinum. 


But is this the best air purifier on the market? Well, not really. Like every other product I’ve reviewed, it has a few flaws. In these reviews, I lay bare both the pros and cons so you can scrutinize each option.

Objectivity, transparency, and honesty drive my research. I always strive to provide the most balanced opinion I can.  If an air purifier is nothing but one massive pile of uselessness, I’ll tell you so.


4 Best Air Purifiers Without Filters


  1. Ionic Pro Platinum (TA750)

2. Airfree Iris 3000

3. Airfree T800 Filter-free Air Purifier

4. Airfree P1000 Filterless

Let’s jump right in and see what these 5 filterless air purifiers look like.


  1. Ionic Pro Platinum (TA750)


Editor’s Rating: 3.5 out of 5 stars (3.5 / 5)


The CARB-certified ionic Pro Platinum is one of the best air purifiers without filters ever made. Unlike the Airfree air purifiers described below, it doesn’t “boil” air pollutants. Instead, it ionizes them. It releases negative ions that attach to the pollutants, finally depositing them on a permanent filter.

Air passes into the air purifier via an air inlet grille and comes out the back via another grille. The air purifier looks like slender tower that nicely curves at the top. It’s a sleek design that pleases the eye. And it works. That’s why you’ll want to add it to your air purification arsenal.

Note: place the device with the front facing into the room it’s treating. Also, allow at least 1 foot between the wall and the purifier for efficient air circulation. The unit runs almost quietly. It’s way quieter than most air purifiers even on the highest fan speed. It may get a bit noisy when dirty, though.

Its prefilter helps trap lint, pet hair, dust, and other relatively large particles. Note: You NEVER need to replace the prefilter for the Ionic Pro Platinum. It’s a permanent, washable filter. Anyone who’s used HEPA air purifiers has experienced firsthand the perpetual pain of buying expensive filters. Most HEPA air purifiers are quite effective, though. I’d even say they outperform their filterless counterparts considerably.

You’ll save money. You will over the term. Consider this: some True HEPA air purifiers use filters costing as much as $150. If you replace such a filter twice in a year, that’ll set you back $300! That seems like too much money to me. That said, millions of people out there still worship at the altar of True HEPA air filtration. Actually, I belong to the HEPA filter-worshiping crowd. But the Ionic Pro Platinum is a great filterless air purifier. As great as a filterless air purifier can be.

The unit runs on 4 fan speeds. These are Silent, Germ, Allergy, and Max. On silent, the unit barely whispers.  Choose Silent if you’re using the unit in your bedroom. The Germ setting is for when germ season arrives. And the Allergy setting helps you manage your allergies particularly in spring. Finally, the Max fan speed enables you to handle smoke and dust. A clearly marked button helps you easily switch between these 4 modes. An LED light comes on, displaying the current fan speed.

The control panel comes clearly labeled. It’s super easy to navigate. It features a 12-hour timer. This feature allows you to set the duration you want your Ionic Pro Platinum to run continuously. It also offers a dimming button so you can reduce the intensity of the light at night.

The Dim and Power buttons sandwich the “Filter Clean” button. This  feature tells you when to clean the filters and the ionizer. If your air purifier is dirty, a light comes on. It also comes if the internal parts aren’t completely dry. I like this feature. It eliminates guessing. Many air purifiers with washable filters lack this button.

How often should I clean the prefilter, permanent filter and ionizer for my Ionic Pro Platinum? The manufacturer says to clean the collection plate and prefilter every 2 months. As to the ionizer, clean it when you’re cleaning these two filters. However, you should be ready to clean these filters more often if you live in a place that sees high air pollution levels.

What’s the CADR rating for the Ionic Pro Platinum? The air purifier’s CADR rating for pollen is 116.3, for dust: 107.6, and for smoke: 107.1. The numbers look pretty decent to me. Generally, an air purifier with a CADR rating of 100 or higher is considered effective. These ratings give you a clear idea regarding the effectiveness of your machine. You’ll find that the Airfree air purifiers reviewed below don’t provide CADR numbers.

But does the Ionic Pro Platinum generate ozone? Yes, it does. However, the device is CARB-certified. The volumes pumped out are within safe limits. Still, it’s best to avoid ionizers (including this air purifier) if you battle asthma and allergies.

The manufacturer says this device kills bacteria. And we know the machine leverages ionization. But does ionization kill bacteria? Yes. According to this scientific research, ionization kills bacteria.

What’s the maximum room size the Ionic Pro Platinum will purify? It’s designed for areas extending up to 500 sq. ft. But in my opinion, the manufacturer has exaggerated the performance here. My research found that this air purifier works best for considerably smaller areas, say 300 sq. ft. and smaller. I don’t think that should count against them, though. Don’t all manufacturers engage in this little vice?




  • CARB-certified
  • Helps remove bacteria and viruses
  • No filters used
  • Ionizes the air
  • Quiet on lower speeds
  • 12-hour timer
  • Permanent filter dishwasher safe
  • Energy Star Certified
  • Removes germs
  • Dimmer
  • Clean filter light
  • Permanent filter has a handle
  • CADR-rated for pollen, dust, smoke




  • Not ideal for basement or bathroom
  • Filters and ionizer need regular cleaning
  • Produces ozone
  • Dirt accumulation interferes with device performance
  • Zero air filtration as you wait for permanent filter to dry
  • Excessive noise (sometimes)
  • Unit sometimes won’t turn on
  • Not the best air purifier for smoke


I’ll Address the Cons 


First off, I like the Ionic Pro Platinum. I recommend it because it works. But I don’t like that the permanent filters must be cleaned every 2 months. In fact, you’ll have to clean it more frequently than that. Cleaning the filters and ionizer seems like too much hassle.

Plus, there’s always a possibility you may insert these components before they’ve dried up completely. Here’s one more thing. As you wait for the filters to dry, your air is getting dirty. It’s not cleaned over that period. I also wonder how long it takes for these filters to dry in wintertime. Well, every good thing comes at a price. But you can find equally great air purifiers that don’t necessitate all the hassle.

You may also notice excessive noise in some instances. But the noise normally happens when the plate has collected too much pollutants. It also happens when the machine’s internal components aren’t completely dry. Fortunately, the noise issue is one you can easily prevent.

Sometimes, the unit just won’t turn on. First, check whether you’ve plugged in the device. Also, check whether you’ve turned the air purifier on. Typically though, the problem is that the user inserted the prefilter and permanent ionic filter incorrectly. Make sure to always insert these components vertically. Again, that’s a small problem.

The manufacturer states that the unit removes smoke. But they also say that you shouldn’t expose it to excessive amounts of candle, fireplace, and oil lamp smoke. Well, very few people use kerosene lamps these days. But what about candle and fireplace soot? On probing further, I found that the device actually removes these types of smoke. But you’ll have to clean the unit more frequently. Now, that’s not a very bad thing, is it?

Lest I forget, the Ionic Pro Platinum isn’t the best air purifier for the basement or bathroom. If those areas need an purifier, buy something else. But I don’t see that as a deal breaker, do you? It’s not, unless you’re looking for a basement/bathroom air cleaning device.




It’s a 1-year limited warranty. I’ve seen many longer warranties.


  1. Airfree Iris 3000 (Easily Kills Bacteria and Viruses)


Editor’s Rating: 3.5 out of 5 stars (3.5 / 5)


The 3.3 lbs Airfree Iris 3000 looks like a smooth black dome that’d add elegance to a space. Thanks to its Thermodynamic TSS technology, it can purify up to 650 square feet. More on purification coverage down the road. But 650 sq. ft. is stretching it too far. This machine won’t clean 650 sq. ft. well. Use it in a much smaller room. I’d suggest 400 sq. ft. or smaller.

But how does the Airfree Iris 3000 work? The technology uses heat to kill harmful micro-organisms. It’s pretty much like boiling. Unlike UV light air purifiers that shine ultraviolet rays upon bacteria and viruses, it “boils” them to death — at 400°F. It’s a natural way to get rid of harmful micro-organisms. Also, setting it up is incredibly easy. Simply plug it in and start enjoying purified air. In a small room, you should notice a difference in a couple hours.

How does the Airfree Iris 3000 draw in dirty air since it has no fan? Untreated air enters the device at the bottom by convection. It then passes on to the machine’s patented ceramic core where it’s sterilized. Once sterilized, the air exits the unit via the top. Note: before the sterilized air comes out, it passes via a cooling process.

Many ISO 17025 labs based in Sweden, Germany, and the U.S have independently tested this air purifier. They’ve reported it delivers as per its specs. Actually, this is the most effective air purifier without physical filters I’ve seen. And it’s nearly 100 percent quiet. You probably should install one in your bedroom.

I must admit one thing, though. True HEPA air purifiers clean polluted indoor air better than all other types of air purifiers. That’s a fact. The downside of these air purifiers is that they use filters. Well, filters aren’t the most expensive products on Earth. However, you’ll buy them 1 to 4 times annually. You know what that means.

Although the Airfree Iris 3000 operates without HEPA filters or any other kind of filters, it works. It’s effective in terms of banishing a variety of air contaminates. It helps with eradicating pollen, pet dander, mold, and dust mites. It also helps kill bacteria and viruses. In addition, it helps deal with organic odors including tobacco smoke.

But what do Airfree air purifiers do with the contaminants they remove? I posed this question to Airfree. The company explained that Airfree purifiers convert these air pollutants into carbon dioxide. They also said that some of the “carbon ash” remains inside the device. I didn’t find these answers very satisfactory.  We want to breathe in oxygen-packed and not carbon-laden indoor air. C02 is a greenhouse gas, and such gases harm the environment.

Do Airfree air purifiers filter the air? No. But they purify it by killing contaminants using very high temperatures.

Does the Airfree Iris 3000 generate ozone, ions, or UV light? No. On the contrary, it removes up 26 percent of ozone from the air! Very few air purifiers eliminate micro-organic pollutants without releasing ozone. I see that as a BIG pro for this device.




  • Small & super light
  • Zero maintenance
  • Beautiful design
  • Doesn’t use filters
  • Removes viruses and bacteria
  • Decimates dust mites
  • No ozone
  • Reduces 26% of ozone
  • Super quiet
  • Independently tested in ISO 17025 labs
  • Low energy consumption
  • 10 colorful night lights
  • Very easy to set up
  • Black color contrasts lighter colors in the room




  • A bit pricey
  • Must be placed in a perfectly vertical position to work well
  • Multi-color night light too bright
  • Needs ample space around its base
  • No shutoff timer
  • Not good for tobacco odor
  • Can’t move it from room to room
  • Low ACH and won’t filter the air

Are these Cons a Deal Breaker?


Let’s see.

You can dim or even turn these multicolored lights off.

And when the device isn’t sitting in a perfectly upright position, you’ll know. Its lights keep blinking.

I also don’t like that there’s no auto shutoff timer. In fact, you must keep all Airfree air purifiers running the whole time. I asked the company why. They told me the device should run 24/7 if the user wants to reap all its benefits. That doesn’t sound like a very nice thing, does it? Fortunately, the unit isn’t a power guzzler. That’s probably because it has no fan.

Here’s one more thing I don’t like. You can’t move the Airfree Iris 3000 from one room to another. The manufacturer explained to me that moving it around “breaks the air cleaning cycle.” But what if you live in a home with several rooms and don’t own any other air purifier? Frankly, that’d be a deal breaker for me. However, that’d not be a problem if you live in a studio. Or just intend to clean only one room.

Even though the manufacturer says the purifier removes smoke, I’d not buy this for smoke removal. I don’t think it does a great job. The Honeywell HPA300 465 sq. ft. Allergen Remover would be a better fit if smoke is the main problem you have.

My Verdict: If you live in an area with high air pollution levels, this device isn’t the best option. When the Airfree Iris 3000 is running, it doesn’t feel like it’s moving much air.  The only way to know it’s actually working is to touch its top part. If it feels warm to touch, it’s working. Here’s a manual that carries more info about this air purifier.




The Airfree Iris 3000 offers a 2-year warranty. Not the longest warranty ever provided, but it’s not the shortest either. Just average.


3. Airfree T800 (Best for Micro-organic Pollutants)


Editor’s Rating: 3.5 out of 5 stars (3.5 / 5)


Compared to other filterless air purifiers, the Airfree T800 is considerably more affordable. White in color, it’s a small-room air purifier designed to treat the air up to 180 sq. ft. The device looks like a silo with a grille on top. It’s easy to knock this thing over, so, take care.

It’s amazingly quiet, too. But that’s because it has no fan. Like the Airfree Iris 3000, the Airfree T800 leverages the patented TSS ceramic core to sanitize the air. Pollutants get sterilized at 400°F. It doesn’t produce ozone, ions, or UV light. Dirty air gains entry into the unit near the base via natural convection.

This portable room air cleaner helps you decimate bacteria, viruses, and other micro-organisms. It’s designed to hep with pollution from tobacco smoke, pollen, pet dander, dust mites, mold, and organic allergens. Well, I’ve not used any Airfree air purifier. But based on the literature I’ve immersed myself in, I’d not say these claims are 100% convincing.

Well, I can see how subjecting bacteria, viruses, and dust mites under 400°F can obliterate them. But I fail to see how the same method should effectively kill pollen or pet dander.

But many users in different online places seem to love this unit. In fact, I found that Airfree air purifiers in general have drawn in truckloads of fans. I’ve seen countless Airfree T800 reviews where the authors praised said it helped them manage asthma and allergies. Well, that’s anecdotal evidence, and anecdotal evidence is what it is.

At just 1.7 lbs, this is probably the lightest air purifier I’ve ever reviewed. And with a height of just 12 inches, it’s not bulky. How much energy does the unit consume? About 33 watts. Having it won’t balloon your electric bills.

What’s the difference between the Airfree Iris 3000 and the Airfree T800? The latter is considerably cheaper and lighter. Plus, it cleans a much smaller area. Also, the Airfree T800 consumes less power than its sibling. Here’s one more difference. The Airfree Iris 3000 features adjustable multicolored night lights while the T800 doesn’t.




  • Attractive price
  • Annihilates bacteria and other micro-organisms
  • Deactivates viruses
  • Kills dust mites and mold
  • Purifies the air
  • Small and easy to move
  • A low energy consumer
  • White: blends well with other colors
  • No filters needed




  • Doesn’t actually filter the air
  • Easy to topple
  • Not very effective for stated coverage
  • Not good for handling smoke
  • Smell noticeable when new
  • Low ACH



If you’ve used an air purifier that uses filters, you might think this filterless air purifier isn’t working. But it works. Touch the top of the “silo,” and if it feels warm, know your machine is doing the job.

Also, I’m not sure this device will effectively clean up to 180 square feet. It seems to be most effective for much smaller spaces. I’d choose this for a very small bedroom, say 10″ x 10.” And if you smoke indoors (maybe you shouldn’t), buy a different air purifier. The Airfree T800 isn’t great at reducing tobacco smoke.

Why am I recommending this air purifier? It’s because it’s cheap and doesn’t use filters. It’s also because it kills bacteria, viruses, and dust mites, and molds. Finally, it’s because it runs silently unlike air purifiers that use a filter (s).

Users have detected an odor when they first set up their device. But this is typically manufacturing odor. And it usually vanishes after a couple hours.

Some users have noticed a change in their air hours after installing this unit. But the effects may not be as strong as would be the case with a HEPA air purifier. For the price, this product is good enough. But I’d not describe it as an air purification workhorse.




2-year warranty


  1. Airfree P1000 (Most Suitable for Bacteria, Viruses, Mold, and Dust Mites)


Editor’s Rating: 3.5 out of 5 stars (3.5 / 5)


The Airfree P1000 looks pretty much like the Airfree P2000. In fact, their dimensions and weight are the same. But there are differences. The Airfree Platinum 2000 should clean 550 sq. ft. while the Airfree P1000 should handle 450 sq. ft. max. Also, the P2000 is silver in color while the P1000 is white.

Another difference is that  the Airfree P1000 consumes slightly less energy than its sibling. And as you might expect, the P2000 costs more than the P1000. You’d think that the P2000 costs more because it works better, but that’s not the case. I’d choose the P1000 over P2000 any day even if the prices were equal.  But in terms of design and build, these two air purifiers are identical twins.

It’s also noteworthy that the Airfree P1000 is CARB-certified. That certification clearly indicates that the device is approved for use in California. California is very serious when it comes to all things health. The state has set stringent standards to guide what products companies can sell there.

This filterless air purifier has its maker’s famous Thermodynamic TSS technology to thank for its effectiveness. It heats the air that enters it by convection up to a temperature of 400°F. No bacteria can survive such temperatures. In fact, you need just 212°F to decimate bacteria. Will 400°F kill viruses?  No. However, any temperature above 212°F deactivates viruses.

Finally, this air purifier offers adjustable night lights. Simply select the color you prefer and hit the sack. Don’t need any light? Well, just turn it off.




  • Operates super quietly
  • Design aesthetically pleasing
  • CARB-certified
  • No filters to replace or wash
  • Very easy to install
  • Adjustable night light




  • Won’t filter your air
  • Pricey
  • Won’t clean stated area effectively
  • Must use it in one room


Let’s look at the cons more closely.


The manufacturer states that the device treats areas extending up to 450 sq. ft. But I doubt it’s that powerful. I’d use it to clean a room much smaller than 450 sq. ft., maybe 300 sq. ft. or thereabout. Also, if you’re grappling with odors and smoke, find a different option.

Unfortunately, you can’t move the to different rooms. You must position it in a particular room and leave it there. Plus, you must leave it running throughout the day if you crave great results. I don’t like this.

However, I like that this air purifier is small and light. I also appreciate that it annihilates bacteria and deactivates viruses. That said, I’d recommend the Airfree P1000 for spaces that need basic or light cleaning. For heavy air scrubbing, hunt down a heavy-duty machine such as the Honeywell HPA300



2 years


In my opinion, the Airfree P1000 is among the best air purifiers that work without needing expensive air filters. But is it the best filterless air purifier I’ve seen? Not really. The Ionic Pro Platinum (TA750) gets my vote.


The Ionic Pro Platinum (TA750) Won


Why do I think the Ionic Pro Platinum (TA750) is the best air purifier without filters? First off, it’s affordable and doesn’t need filters. Second, it helps with the removal of smoke, pollen, pet dander, dust, mold, and dust mites. It’s also CARB-certified and Energy Star rated. What’s more, it kills micro-organisms including bacteria and viruses.

Apart from that, the air purifier is also tolerably quiet on all fan speeds. In addition, it’s black. Black blends well with almost every color. It’s also light so you can move it around the house as need arises.

But it produces a little ozone. The amounts generated aren’t anything you should worry about, though. Also, you have to wash the ionizer, permanent filter, and prefilter every 8 weeks or more frequently. Is that too hard to do?

For these reasons, I recommend the Ionic Pro Platinum (TA750). Not ready for this product? Why not visit Amazon and look around a bit? Who knows, you might find something that catches your eye.


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