Airfree Onix 3000 Air Purifier

Airfree Air Purifier Onix 3000's exclusive and patented Thermodynamic Sterilizing System (TSS) technology uses heated air to silently destroy airborne mold spores, bacteria, viruses, dust mites, and pollen allergens. The TSS process has been proven 99.99% effective in independent testing. Airfree air purifiers are silent, economical (no filters or UV bulbs to replace), clean, efficient, and ozone free. The Onix 3000 is perfect for rooms up to 650 sq ft. Also check out the Airfree P1000 air purifier. Authorized, Preferred Airfree Dealer.
In stock

This product provides relief from: Asthma, Bacteria & Germs, Fragrances & Odors, Mold & Mildew, Pet Dander

Buyers Guide: Air Purifiers

Choosing a Portable Air Purifier


When your allergies are acting up, one of the best ways to feel better fast is to get away from whatever is causing the reaction.  Sometimes simply opening a window can ventilate a room with clean air and provide relief. Other times, weather makes this option impossible or allergens may also be present in the new air.  In such a case, an air cleaning system may be useful.

Air cleaners remove allergens from indoor air.  They can be installed in the ductwork of a home’s central heating, ventilating, and air-conditioning (HVAC) system to clean the air in the whole house or a portable room system can be used to clean the air in a single room only.   Installing a whole-home system may not be in your current budget, but depending on the type of allergy you are suffering from, a portable system may be sufficient for your needs and your wallet.

Types of Air Cleaners

There are a variety of air pollutants that can cause allergic reactions.    Air pollutants fall into two categories:  particulate matter and gaseous pollutants.  Particulate matter includes dust, smoke, pollen, animal dander, tobacco smoke, dust mite allergen, and mold spores.  Gaseous pollutants include the vapors from gas cooking stoves, vehicle exhaust, paints and pesticides.    Choosing the best air cleaner depends on the type of allergen causing your individual reactions.  Different air cleaners are better at removing particulate matter from the air while others are preferred for removing gaseous pollutants.

For example, if you are particularly sensitive to dust mite allergen, waking up each morning stuffy and sneezing, you should consider a particulate matter air cleaner in your bedroom.  The EPA has divided them into two types: mechanical and electronic.  Mechanical air filters use a fan to pull air through filters where particles become trapped and cannot escape back into the air. High Efficiency Particulate Air (HEPA) filters fall into this category.

Electronic air cleaners use a process called electrostatic attraction to trap particles.  They also use a fan to draw air in, however the air then passes through a section of the machine where the particles are given an electrical charge.  The charged particles are drawn to a series of flat plates called a collector where they accumulate until the filter is replaced or cleaned.    Although the process is similar, air cleaners called ionizers or ion generators do not have a collector.  They simply charge the airborne particles and expel them back into the air where they attach to nearby surfaces, such as walls or furniture, or attach to one another causing them to settle faster until they can be vacuumed or cleaned up.

If paint fumes or other household odors are bothering you, an air cleaner that removes gaseous pollutants is a better choice.  Gaseous air filters remove gases and odors by using a material, such as activated carbon, to absorb the pollutants.  These filters are typically intended to remove one or more gaseous pollutants from the air that passes through them, but may be specific to one or two types of gas.  It is important to choose an air purifier that is designed to remove the specific gas or odor that is affecting you.

In addition to air cleaners that using a filtering process to remove allergens from the air, there are also systems that will actually destroy pollutants.  Some use ultraviolet (UV) light technology.  These cleaners are called ultraviolet germicidal irradiation (UVGI) cleaners and photocatalytic (PCO) cleaners.  UVGI cleaners use radiation from UV lights that may destroy viruses, bacteria, allergens and mold.  Typically such systems are used in conjunction with an air filtration system.  PCO cleaners use a UV lamp along with a substance called a catalyst that reacts with the light.  They are intended to destroy gaseous pollutants by converting them into harmless products, but do not actually remove particulate matter from the air.

One more type of pollutant destruction system is an ozone generator.  It uses a UV light or an electrical discharge to intentionally produce ozone.  However, as you may know, ozone is a lung irritant that can cause adverse health effects.  Ozone also has little effect in removing most indoor air contaminants, thus are not always the safest or most effective choice.


(Mechanical or Electronic)

Air filters Particles Ineffective in removing larger particles because most settle from the air quickly and never reach filters.
Gas-phase filters Gases Used much less frequently in homes than particle air filters. The lifetime for removing pollutants may be short.

Other Air Cleaners

UVGI Biologicals Bacterial and mold spores tend to be resistant to UV radiation and require more light or longer time of exposure, or both, to be killed.
PCO Gases Application for homes is limited because currently available catalysts are ineffective in destroying gaseous pollutants from indoor air.
Ozone generators Particles, gases, biologicals Sold as air cleaners, they are not always safe and effective in removing pollutants. By design, they produce ozone, a lung irritant.


Measuring the Effectiveness of an Air Cleaner

The effectiveness of a portable air cleaner, regardless of what you are trying to remove from the air, is measured by the clean air delivery rate (CADR).  Developed by the Association of Home Appliance Manufacturers, the CADR is a measure of the cleaning speed.  Since individual filters vary in their ability to remove different particles, three CADR's for a given device are typically measured: smoke, pollen, and dust.  While an individual portable system may not achieve its rated measure under all circumstances, it does allow comparison between different makes and models.  Typically, the higher the CADR, the more effective the air cleaned will be.  When purchasing a system for your personal use, choose one with the highest CADR for your specific allergy. If you are treating a pollen allergy, consider a purifier with a high CADR for pollen, as stated on the label.

When looking at the CADR ratings, you must also take into account the size of the space in which you will be using your air cleaner.  Portable air purifiers are only meant to clean the air in a single room, not your entire house.  Therefore, if you are having problems at night and when you wake up in the morning, you may want to purchase a particulate matter air purifier specifically for your bedroom.  If you are also concerned about odors in the kitchen, you should consider a gas-phase unit for the kitchen area.  Regardless of what type you choose, you must have an accurate measurement of the square footage and in some cases, the cubic footage for that particular room in order to choose a machine that will be effective.

To calculate your room’s approximate square footage, multiply the length of the room in feet by the width of the room in feet.  To calculate the cubic footage, multiply the length of your space by the width of your space and multiply that by the ceiling height.  Most manufacturers list an optimal square foot area of coverage for their air purifiers, so you'll want to choose a model that is rated to cover the size of your room.  You might also consider choosing a model designed for an area larger than yours for better cleaning at a lower, quieter speed.

Another important measure of unit effectiveness is the cubic feet per minute (CFM) rating. This number represents how many cubic feet of air passes through the unit in any given minute. It gives you an idea of how quickly an air purifier will clean the complete volume of air in your room. Typically, the higher an air purifier's CFM rating, the faster the air in the room will be purified. One more measurement is the air changes per hour (ACH). ACH indicates how many times an air purifier filters the entire volume of air in your space per hour. Those who are looking for relief from allergies and asthma should look for an air purifier that can produce at least 3 to 4 air changes per hour.

Noise Levels

Once you have determined what allergens you need to remove from the air and what size system will work best in your room, there are several ways to narrow down your choice of air cleaner based on your personal preferences.  Noise is an important one, especially if the unit will be used in the bedroom.

Because of the fan element, most air purifiers will emit some amount of noise, depending on the purification speed you choose. Some people need complete silence while sleeping while others enjoy “white noise” in the background.  If noise is a concern to you, look for an air purifier with a decibel (dB) rating for each fan speed. You can compare these ratings to the sounds made by other common household items which in turn will give you a better idea of the level of sound an air purifier will make.

0 dB Hearing Threshold
10 dB Breathing
20 dB Falling Leaves
30 dB Whisper
40 dB Raindrops
50 dB Average Home
60 dB Normal Conversation
70 dB Vacuum Cleaner

While a decibel chart can be helpful, remember that other factors, such as where in the room the purifier is placed, the amount of furniture and choice of flooring can also affect the noise level while the unit is in use.   Many units come with multiple fan speeds.  If noise is a particular concern to you, the option of a lower fan speed may be something to consider.

Other special features that may decrease the amount of noise are a programmable timer and a remote control.  A remote control allows you to turn the unit off and on or change fan speeds without having to leave the comfort of your bed or sitting area.  A programmable timer can be used to automatically turn the system on or off at certain times of the day or night to cut down on noise and to save energy.

In addition, manufacturers offer a variety of other special features to consider when buying an air purifier.  Some offer digital controls for setting fan speeds and timers easily and accurately.  If you think you will be moving your unit from room to room, you might want to look for a one with carrying handles or wheels for easy relocation.  Some systems even come with air quality monitors to sense the level of pollution in a room and filter replacement lights to let you know when to change the filter.

As with any purchase, the more features you opt for, the more likely the cost will increase.  So, in deciding which unit is best for you and your budget, don’t forget to think about maintenance costs.  Look at the cost of replacing filters and how often they need to be replaced in order to get an accurate idea of the true cost of an air cleaning system before buying.  Some brands are designed to need new pre-filters every three months and new HEPA filters every year. Others have filter packs that last up to 5 years.  When filters are not replaced regularly some filtration ability is lost and the motor of the unit could be damaged, so it is important to invest in the maintenance of your unit as well as the unit itself.

The Airfree Onix 3000 Air Purifier (for rooms up to 650 square feet) is a silent, filter-less Airfree air sterilizer that uses a patented ceramic core technology to heat air inside the unit to 400°F, destroying 99.99% of airborne microorganisms and pollutants, including mold spores, fungi spores, bacteria, viruses, pollen, dust mite allergen, and even ozone, all which are continually drawn into the unit by a process known as air convection. Unlike air purifiers with filters, which require noise-producing fans to push air through the filter, the Airfree Onix 3000 air purifier is completely silent in operation – a real bonus, particularly when used in a bedroom, or in community settings like schools and libraries.

The Airfree Onix 3000 produces no ozone, ions or harmful emissions of any kind. Additionally, although the Onix 3000 kills microorganisms at a very high temperature, it is very safe to use and only mildly warm to the touch (at top). It is designed to be run continuously, with no noticeable increase in room temperature or relative humidity. The Onix 3000 Airfree air sterilizer is simple to use, and very energy efficient – costing only 10-12 cents a day to run. And because the Onix 3000 uses no filters or UV bulbs, the burden of ongoing maintenance and replacement costs is non existent. Small, stylish and portable, the Airfree Onix 3000 comes with a 2-Year Manufacturer's Limited Warranty.

Airfree air purifiers are subject to Minimum Advertised Pricing (MAP).

The strawberry test below shows clearly the difference an Airfree Air Purifier makes in controlling mold.

Airfree's patented ceramic core technology (called the Thermodynamic Sterilizing System or TSS™) has undergone over 20 independent tests by world-renowned institutions and ISO 17025 laboratories in eight countries, including the USA, Sweden and Germany. These independent tests prove the efficacy of Airfree in its ability to destroy microorganisms that pass through the TSS heated ceramic core, no matter how small, resistant or dangerous they might be.

These tests also prove what may be most important for consumers – the level of microorganism and pollutant reduction actually achieved in the room. Airfree air sterilizers and purifiers do not work like and cannot be measured in the same way as ordinary air purifiers. While Airfree begins working within a few minutes of being plugged in (which begins the process of bringing relief to allergy and asthma sufferers), it will take 2 to 3 weeks for Airfree to reach maximum performance of reducing an average of 85% to 97% of airborne microorganisms and pollutants within a room. This performance level is not an idle claim, but has been proven through numerous tests conducted in real working and living conditions, like hospitals, hotel rooms, offices, and laboratories, not over a period of minutes, but of weeks and months.

Please click here to see the published results of some of the testing performed on the Airfree Onix 3000 air purifier.


  • Filter-less air purifier cleans air in rooms up to 650 sq ft  (approx. 23' x 28') ‐ 3.3 air changes per day
  • Can be used in rooms or closets as small as 330 cubic feet  (approx 6' x 7')
  • Patented TSS™ ceramic technology incinerates up to 99.99% of airborne microorganisms
  • Uses air convection to pull spores, allergens, bacteria and viruses into heated chamber where they are destroyed at 400°F
  • Clean air is cooled before it is released into room
  • No filters, UV bulbs, fans, motors, or any moving parts
  • No ozone, ions, or any harmful emissions
  • Nothing to install ‐ just plug in
  • Auto shut-off protection
  • Totally silent operation
  • No maintenance
  • On/off LED
  • Blue anti-stress dimmer light ‐ can also be turned off
  • Very low energy consumption ‐ costs 10-12 cents a day
  • 24-hour use is recommended for best results
  • Stylish, compact design:  10.4"H x 8.4" diameter (26.4 x 21.3 cm) ‐ 3.3 lbs (1,48 Kg)
  • Plastic housing with ceramic core
  • Available in Black
  • 2-Year Mfr. Limited Warranty

Benefits of Airfree Air Purifiers:

  • No Ozone!
    • According to the Environmental Protection Agency (EPA), ozone is a toxic gas that can trigger asthma and destroy lung tissue.
    • Airfree air purifiers generate no dangerous emissions – no ozone, no ions, no UV light.
    • In fact, independent laboratory tests conducted in Sweden demonstrate that Airfree actually reduces ozone by 26%.
  • Clean!
    • No need to change dirty, contaminated filters or fan blades, which can trigger allergic reaction in sensitized individuals.
  • Silent!
    • Airfree emits NO noise – no fans, no motors, just quiet.
  • Economical!
    • Airfree is virtually maintenance free ‐ nothing to replace, no moving parts.
    • No filters or UV lamps to replace! Replacement parts for other air purifiers can cost $60-$100 a year, or more.
    • Airfree uses less electricity than a 50W light bulb, costing only pennies a day to operate.
  • Efficient!
    • Airfree's exclusive TSS technology uses combustion to efficiently incinerate and destroy airborne microorganisms.
    • Airfree's effectiveness has been well tested by universities and over 20 respected ISO 17025 and other independent laboratories in 8 countries.
  • Easy to install and use!
    • Just place Airfree on the floor and plug it into the nearest outlet. No need for constant maintenance or cleaning.
  • Safe!
    • Airfree is the only technology proven to reduce ozone while simultaneously destroying microorganisms
    • Airfree is not hot to the touch, and is safe to operate continuously.
    • Electrical safety is assured with:
      • CE and UL approvals.
      • Airfree's automatic shut-off of the heated ceramic core if an irregularity is detected, such as blockage of an air intake port, or tilted placement of the device, or if ambient temperature reaches 95°F (35°C). In this event, you will be alerted by the unit's red blinking light.
    • Airfree sterilizes air using heat alone. No fiber-glass filters, triclosan-coated paper or any type of material harmful to you or the environment when discarded.
  • Faster Performance!
    • Microorganism reduction begins just 15 minutes after Airfree is plugged in.
  • Durable!
    • Airfree's smart, long-lasting design has no moving parts, resulting in virtually no wear and tear.
  • State of the art!
    • Airfree's automatic warning sensor alerts users if the unit is improperly placed or malfunctioning.
    • Energy-saving feature "shuts off" Airfree's ceramic core for a few minutes when it reaches the optimal temperature for air convection or if ambient room temperature reaches 95°F. The unit continues sterilizing air during this time.

Please click here for a brochure on Airfree Air Purifiers.

More Information

Unlike motor-driven air purifiers, one of the beauties of an Airfree is its produces absolutely no noise. The Onix 3000 is no exception. For those sensitive to noise who want a maintenance-free air purifier capable of destroying up to 99.99% of organic airborne particles by using natural air convection (rather than a noisy fan) to draw in, sterilize and release cool, purified air (free of ions and ozone), the Airfree Onix 3000 fits the bill.

Room Size

650 sq. ft. (approx. 23' x 28')

Recommended For

Milder allergies and asthma, improving indoor air quality (especially where mold or fungi spores, or contagious germs is a concern)

Best Fit

Ideal for allergy and asthma sufferers, those wanting better indoor air quality, and those preferring a device that operates silently, with extremely low operating costs

True HEPA Filtration

Not applicable

Particle Filtration Efficiency

No filters. Destroys up to 99.99% of organic particles in 400°F heated ceramic core

Particle Removal

Mold, fungi and plant spores, bacteria, viruses, pollen, dust mite allergen

Gas and Odor Removal

Light organic odors, such as "mildew smell." Ozone.

VOC Removal


Optional Filters


Unique Features / Benefits

Completely silent. No filters. No replacement parts. Low energy consumption.

CADR: Dust rating

Not applicable. CADR is designed to test filtered air. Airfree does not filter air. It destroys microorganisms.

CADR: Pollen rating

See above

CADR: Smoke rating

See above

ACH (air changes per hour)

3.3 air changes per day (650 sq. ft. room)

Airflow (cubic feet per minute)

11.77 cfm

Filtration System

None ‐ Airfree's patented TSS™ ceramic core incinerates particles

Number of Filters to Replace


Replace HEPA Filter

Not applicable

Replace Pre-Filter

Not applicable

Replace Other Filters

Not applicable

Dimensions (H x W x D)

10.4" H x 8.4" dia.

Color choices


Product Weight

3.3 lbs

Packaged Weight

4.4 lbs

Shipping Weight

6.0 lbs

Noise Level - (min-max decibels)

None ‐ totally silent



Remote Control


Number of Fan Speeds

No fan ‐ works by air convection

LCD Display




Programmable Cycles or Timer


Sleep Mode


Auto Fan Mode (auto adjusts based on air quality)


Particle, Gas or VOC Detector


Filter Status Indicator

Not applicable

Filter Reset function

Not applicable

Other Indicators

• On/Off blue LED
• Anti-stress light doubles as an alert system

Other Features

• Adjustable blue anti-stress light (can be turned off)
• Auto shut-off of heated ceramic core when irregularities detected
• Auto energy-saving intermittent shutoff

Casters or Handles


Air Inlet

6 side ports and bottom grilles

Air Outlet


Housing Construction

Plastic shell, ceramic core

Fan / Motor Assembly

Not applicable

Energy Consumption (watts)

52 W

Power Requirements

110-127 V

Power Plug

2-prong polarized plug


0.4 Amp

Energy Star®


AHAM-certified CADR

Not applicable

Approvals / Other Certifications

CE, UL listed. California ARB certified.

Ozone Emission

None ‐ reduces ozone

Manufacturer's Warranty

2-Year Limited

Click here to view the Owner's Manual for the Airfree Onix 3000 Air Purifier.

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