Airfree Onix 3000 Filterless Air Purifier Review In 2023

Black coated Airfree Onix 3000 is the "NEW" filterless air purifier. When we said new, it is still the good ol' Thermodynamic TSS Technology that is used across Airfree lineup. So compared with other permanent air purifiers that do not use a filter, how effective is Onix? What about its purifying applicable radius? Will it stand tall from other conventional air purifiers?
online price (US)**
±299.00 $$$$/ 7

(annual filter cost ±0)

** MRSP (Manufacturer's Suggested Retail Price)/ RSP (Retail selling price) is accurate at the time of posting.
^ Annual filter cost is calculated based on filter price and 12 hours of usage. Pricing could vary depending on air quality, usage frequency, and speed.
` The indicated online price guides as follows: $ = under $50, $$ = $50-100, $$$ = $101-200, $$$$ = 201-300, $$$$$ = $301-400, $$$$$$ = 401-500, $$$$$$$ = over $500.

Airfree Onix 3000 Specification

ProductAirfree Onix 3000
8.4 x 10.4 x 8.4 in
(21.3 x 26.4 x 21.3 cm)
Weight3.3 lb (1.5 kg)
Coverage (up to)650 sq. ft. (60 m2)
Airflow speed
Dust free (CADR)N/A
Pollen free (CADR)N/A
Smoke free (CADR)N/A
Humidifying(H) speed
- Lifespan
- Replacement cost ($)
HEPA filter
- Lifespan
- Replacement cost ($)
Carbon filter
- Lifespan
- Replacement cost ($)
Ionizer/ TechnologiesPatented Thermodynamic TSS Technology
UV-light/ PCO
Other filter
All-in-one filter
- Lifespan
- Replacement cost ($)
Optional/ Addon
Noise levelSILENT
Power usage level52 W
Timer/ Scheduler
Auto mode
Air qualityAQ indicator
Filter change indicator
More color options
Wi-Fi/ BTBluetooth
Remote control
Child lock
Warranty2 years
Email/ Phone support

Key Features

  • Exclusive Patented Thermodynamic TSS Technology
  • Small, lightweight and portable
  • Filterless purification
  • Zero noise operation
  • Eco-friendly with no ozone or ion emissions
  • Built-in stress-free night light
  • 2 years warranty

Design and Usability

Like its award-winning design siblings, Airfree Onix 3000 derives straight from it. It has a very compact and lightweight body at 8.4 x 10.4 x 8.4 in and 3.3 lb weight. There are 2 side shells that I suppose it can assist you with the carrying? In any case, you will definitely have no problem carrying and placing it around the house. Air inlet is at the bottom air convection while air outlet is at top. Overall, the solid build quality would have no issue serving you for many years down the road.

Let’s talk about the one and only control. The adjustable anti-stress night light. Right between the 2 side shells, there is a light intensity touch sensor. You can easily adjust the night light brightness or turn it off during day time. Other than the anti-stress light, this air purifier is pretty much a plug and play unit.

Lastly, Let’s talk about passive features. All Airfree air purifiers are CARB certified for ozone-free. There is also thermal fuse, tilt sensor, varistor, current limiting fuse and Thermistor safety sensors.

Airflow, Coverage, And CADR

Like Iris 3000, Airfree Onix 3000 has a wide 650 sq. ft. purifying coverage. Great but the whole the sterilization process might take a while. The filter-free air purifier must be in continuous operation in order to be truly effective. You will only see the improvement gradually which could take up to 30 days. CADR is also equally impressive as the purifying coverage. Overall dust, pollen, and smoke have an outstanding 350 cfm figures. Significantly higher than most air purifiers CADR output within its segment. Based on the figures itself, 400S would have no problem handling heap of dust and allergens. Same goes with indoor smoke and odor pollutants.

Recommended Read

Filters And Performance

Works similarly to boiling water where microorganisms are destroyed at high temperature. First, the inflow contaminants will be trap inside the TSS ceramic core. The mini-ducts inside the core would begin heating the air over 400°F (200°C). At this point, up to 99.99% of the contaminants are eliminated on the spot and left to cool down inside the machine. The clean air would then be release out without affecting the room temperature. The entire sterilization process is safe, no emissions, ions or new particles generated. In fact, Airfree Onix 3000 help reduces ozone by 26% as tested in Sweden's laboratories.

Highly Recommended

Noise And Energy Usage

Complete silent operation is one of the main highlight in this air purifier. The whole sterilization does not rely on a fan or any motor. Ideal for bedroom where you could leave the machine on 24x7. 52W Power consumption is not the lowest in Airfree lineup but is still on a low tier. The good thing is Onix 3000 will shut down its ceramic core and enter into energy-saving mode once it reaches a certain temperature.
Noise TypeDecibels
Airfree Onix 3000SILENT
Breathing10 dB
Rustling leaves20 dB
Whispering/ Quiet library30 dB
Light rainfall40-50 dB
Conversation50-60 dB
Vacuum cleaner/ Hair dryer/ Washing machine65-80 dB
City traffic80-90 dB

Pricing And Maintainence Cost

We all know filter replacement is usually an air purifier Achilles heel. Airfree Onix 3000 base price is far from cheap, but the forever no recurring cost is what sweetens the deal. Plus, it is environmental-friendly because there is no filters or UV light lamp to toss away. Give yourself a big thumbs up for being an eco-warrior!
Amazon is the best place to get Airfree Onix 3000 as the availability is rather limited. You may or may not enjoy the free shipping, but 30-days no questions asked return policy is standard here. Best Buy and Walmart do carry the model, but again, availability trouble pops up. Airfree official site does not have a web store so you forget about that.

Final Thoughts On Airfree Onix 3000

Love it or hate it. That's what most people thought of Airfree Onix 3000. 71% of the reviewers are happy with the outcome. They see their allergies disappear, along with all the symptoms. The frequency of mold, pollen from popping out also significantly reduced. The rather high 21% haters did not see with us. They feel the air purifier does nothing in improving their current allergy state. Some even think the whole thing is just a scam that we beg to defer. Since we tested the unit, we are on the believer side but in the end, it's up to you to decide which side to stand on.


  • Sterilization method is super effective against microorganisms like mold and pollen.
  • The TSS ceramic core does not require any maintenance or cleaning.
  • No recurring cost as the air purifier does not use any filter.
  • Fits anywhere with its compact and lightweight body.
  • Stress-free light can be adjusted on brightness intensity.
  • Absolute silent operation.
  • 2 years warranty that covers all manufacturer defects.


  • Purification works on a gradual basis, which could take days to clean up a room.
  • Less effective on dust, smoke, and odor compared with conventional filter-type.
  • Plain vanilla unit with no add-on features.

Verdicts And Ratings

Build Quality



Particle Filtration

Smoke Filtration


Filter Cost



Airfree Onix 3000

Max Fernandez

A loving father and a dedicated reviewer for airfuji.com with more than 1000 air purifiers under his belt. Max Fernandez is also one of the million patients currently suffering from asthma. Feel free to nudge him if you have any questions.

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