Air Purifier Product Database

AIRFREE P3000 Filterless

One thing I love about this model is its silent operation. Since it has no fan, it's absolutely silent.

It's so quiet, in fact, that I had to check that the unit was operating after plugging it in and turning it on.

Another great feature of the P3000 is its portability. Even though it can cover up to 650 square feet, it's small enough for travel, and you can easily move it from room to room.

Just look at the dimensions and weight; this powerful machine weighs just 3.5 pounds and stands 10.4" tall.

If you’re worried about harmful byproducts, you can rest easy with this machine. It uses heat sterilization to deactivate particles, so there is no ozone or ion production.

Best of all, this unit might even improve your home’s safety by removing some ozone from the surrounding air.

Unfortunately, this isn’t the most budget-friendly option on the market, retailing at about $250, but it does make up for that with its 2-year warranty. Not to mention that company's word that the unit will last for 20+ years.

If you’re looking for something cheaper with similar capabilities and design features but for personal spaces, I suggest the Airfree T800 model instead.

GermGuardian GG1000

Unlike the Airfree P3000, the GermGuardian GG1000 purifier isn't designed for larger rooms, but is marketed towards small spaces of up to 50 square feet.

The GG1000 is an effective plug-in device that measures just 7" tall. It is great for a small kitchen, bathroom, laundry room, mud room, or nursery.

It’s particularly helpful for removing odors, which is why I use this near my cat’s litter box! I also have a second unit that sits on my nightstand.

Speaking of multiples, the GermGuardian is much more cost effective when you buy it in bulk. They sell a six pack for for around $230 (less than $40 per device), but along, one costs around $55.

Just like many other air purifiers using filterless technology, this one turns to ultraviolet light to kill germs and airborne viruses.

According to their parent company, Guardian Technologies, the GermGuardian product meets all US and Canadian safety standards and emits undetectable amounts of ozone.

It’s been tested for killing influenza, staph, and rhinovirus, and it passed these tests with flying colors.

Because it's such a small device, you can count on the GG1000 to be energy efficient.

While it won't work in large spaces, it has high-performance ratings for rooms up to 50 square feet and only needs replacing once a year.

Airfree T800 Filterless

Similar to other air purifiers from Airfree, including my top choice of the P3000, this one uses the company’s patented thermodynamic TSS technology for cleaning air.

The technology utilizes heat to remove allergy-causing organisms, including mold, dust mites, bacteria, and dander.

The innovative technology isn't the only thing to love about the T800.

Other top features include the machine's silent operation, energy efficiency, compact sleek design, 2-year warranty, and, best of all, affordable price tag of under $100.

I don’t really have anything bad to say about the T800. My only worry is that this device isn’t effective for anything over 180 square feet.

If you plan on using this in a master bedroom or larger living space, I highly suggest checking room size measurements before you buy.

That said, I have a friend who uses this model as a supplement to their whole house air purification because they are particularly asthmatic, and it seems to be working really well for them.

Clarifion Air Ionizers

For consumers on a tight budget, spending hundreds on a new purification machine probably isn't in the cards.

Luckily, there are plenty of affordable devices available, including the popular Clarifion Air Ionizers.

A 3-pack of these plug-in ionizer devices costs just over $100. Depending on how often you use it, each ionizer can last for an entire year.

That’s only about $33 for a full year of clean air, and best of all, you don’t have to worry about any additional costs to replace new filters.

However, the Clarifion models do not have replaceable components, like the GermGuardian has a replaceable bulb.

Unlike electrostatic precipitators or UV air purifiers, this one works by sending out negative ions.

These ions then attach to and neutralize the air particles, working to kill bacteria and other particulate pollution in your home.

Because this is such a small device, my only complaint is the small coverage area.

Compared to large HEPA filters, you’ll only notice a difference if you use this in a very small room, like a closet, bathroom, or laundry room.

I also like to remind people that using ionizers is different from regular air purifiers, and requires you to clean your surfaces and floors regularly.

Ivation 300B

Finally on my list of filterless air purifiers, I will list one ozone generator—the Ivation 300B. 

Ozone generators are serious devices. Unlike ionizers and UV-C air purifiers like the GermGuardian GG1000, that emit small negligible amounts of ozone,  models like the Ivation 300B intentionally create ozone to purify the air. 

The Ivation 300B is a powerful ozone generator that can be used as an ionizer alone, or as a full-blown ozone generator (running without any people or pets present, as ozone will quickly build up in the house).

I typically only recommend ozone generators for very cautious people who are using them in extreme circumstances, such as fire restoration, significant home renovations that include mold, and for cleaning out a home that has been smoked in for many years. 

According to the EPA, "While high concentrations of ozone in air may sometimes be appropriate in these circumstances, conditions should be sufficiently controlled to insure that no person or pet becomes exposed."

I would recommend wearing a medical grade respiratory mask when starting and stopping the machine, and allowing time for the area to air out with open windows and doors before residents enter again.

While it comes with its risks, for under $160, this small device can offer industrial level air cleaning and odor removal on another level, as long as you're careful.

Just make sure to read the manual carefully, and to store the device away securely when not in use so that curious hands don't accidentally turn it onto "ozone mode."

Related article: Are ionizers safe?

How do filterless air purifiers work exactly?

Filterless air purifiers work differently based on the method of purification used. There are several different types of filterless purifiers, each using a different medium.

Based on the one you choose, your purifier could operate using ozone, UV light, ionization, heat, or even electrostatic energy.

Are filterless air purifiers as safe as filtered ones?

Filterless air purifiers can be just as safe as filtered ones when used correctly, but their safety depends on the specific technology they use, such as UV-C light or ionization. Ozone generators are not at safe.

How do you clean a filterless air purifier?

The best way to clean your filterless air purifier is to remove dust buildup from the intake or output areas regularly. You can do this with a small cleaning brush or a microfiber towel.

Why don’t filterless air purifiers conduct ACH or CADR ratings?

ACH, or air changes per hour,and CADR ratings are specifically used to rate the filtration system of an air purifier. 

Since a filterless device doesn’t actually have a filter, there’s no need to provide ACH or CADR ratings for these products.

How long will a filterless air purifier last?

The lifespan of a filterless air purifier can range anywhere from 1 year to 5 years. The lifespan depends on a few things, but it mostly has to do with the quality of the product.

Generally speaking, cheap filterless models will last about 1 year, whereas more expensive devices can work for up to 5 years.