ULTTY Bladeless Fan Air Purifier R21 Review

An air purifier usually doesn't go well with a fan, that's not the case for ULTTY R21 Bladeless Fan. A compact fan air purifier that can cool and clean your indoor air both at the same time. So how does this technology work? What kind of filtration does it have? What are the pros and cons compared with a conventional HEPA machine? Find out in our full review of ULTTY R21 below.
online price (US)**
±149.99 $$$/ 7

(annual filter cost ±36-72)

** 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.

ULTTY R21 Bladeless Fan Specification

ProductULTTY R21 Bladeless Fan
10 x 23.5 x 10 in
(25.4 x 59.7 x 25.4 cm)
Weight8.5 lb (3.9 kg)
Coverage (up to)320 sq. ft. (30 m2)
Airflow speed
Dust free (CADR)
Pollen free (CADR)
Smoke free (CADR)
Humidifying(H) speed
- Lifespan
- Replacement cost ($)
Iron Pre-Filter
HEPA filter
- Lifespan
- Replacement cost ($)
H13 True HEPA filter
3-6 months
Carbon filter
- Lifespan
- Replacement cost ($)
Ionizer/ Technologies
UV-light/ PCO
Other filter
Silver-ion Medical Coating
All-in-one filter
- Lifespan
- Replacement cost ($)
ULTTY H13 HEPA Replacement Filter
3-6 months
+- 17.99
Optional/ Addon
Noise level<32 dB
Power usage level
Timer/ Scheduler1-8 hours
Auto mode
Air qualityAQ indicator
Filter change indicator
More color options
Wi-Fi/ BTBluetooth
Remote control
Child lock
Email/ Phone support

Key Features

  • Bladeless Fan Technology
  • 360° Purifying, 90° wide angle oscillation (Horizontal), and 30° oscillation (Vertical)
  • Medical Coating 3-Stage air multiplier technology
  • 9 speed with sleep timer
  • Iron pre-filter
  • H13 True HEPA filter - 99.97% of 0.3 microns
  • Silver-ion Medical Coating
  • Ultra-quiet operation

Design and Usability

ULTTY Bladeless R21 Fan Air Purifier is a good alternative to your typical options. At a space-saving 23.5 inches height with a diameter of 10 inches, it will fit well in most homes including bedside table and work desk. The lightweight 8.5 lb makes carrying the fan air purifier a breeze that you can use in multiple rooms throughout the day. Available in 2 color options, centering the modern exterior is the surrounding air inlet and a large blade-free tube. The iconic bladeless design is pleasing to the eyes, very easy to clean, and more importantly, safe for children and pets.

On to the controls in ULTTY Bladeless Tower Fan and Air Purifier, you can conveniently make adjustments via the front LED touch-screen or remote control. Cycle between the 3 modes or 9 speeds, enable/ disable the wide angle oscillation, or turn on/ off the fan by holding the buttons for 3 seconds. you can also set a sleep timer before you hit the bed that will automatically shut off the fan in 1 to 8 hours’ time. Very straightforward and usable especially with the inclusion of the front digital display that lets you know what mode you’re in.

Last but not least, ULTTY R21 Fan Air Purifier is officially certified by California Air Resources Board (CARB). That means this air cleaning product is ozone-free and safe for sales in California. There’s also a standard 1-year warranty the covers any manufacturing defects excluding wearable parts like the filter.

Airflow, Coverage, And CADR

The ultimate cooling fan to clean and lower your room temperature. ULTTY R21 Bladeless Fan air purifier can deliver consistent fresh air via its 3-mode and 9-speed settings with a sleep timer. The internal brushless electric motor will takes air in and distribute it into a circular motion, creating a super smooth breeze. Adding the adjustable 90° horizontal wide angle oscillation and 30° vertical angle oscillation, ULTTY R21 can push cool air up to 320 square feet at 5 air changes per hour. Ideal for bedroom, living hall, kitchen, office, garage, basement, dorm, and baby nursery room.

Recommended Read

Filters And Performance

Complimenting the cool, fresh air is ULTTY Bladeless Fan Air Purifier R21 Medical Coating 3-Stage filtration. A conventional and dependable filtration setup that many of us would be familiar with. To start off, you have an iron pre-filter that captures large visible particles like dust, pet hair, and lint. With most PM10 particles trapped, the protected H13 HEPA filter will capture 99.97% of PM2.5 particles like mold, pollen, pet dander, bacteria, and viruses. To prevent captured microorganisms from thriving, a silver-ion medial coating is applied on the filter to prevent the germs from regrowth. The only thing missing in the filtration is an activated carbon filter that would help with smoke particles.

Noise And Energy Usage

When operating at the lowest speed, ULTTY R21 Bladeless Fan air purifier produces low noise under 32 dB. When running at a max speed, there is a clear whistling noise coming from the fan that is not everyone's cup of tea. Depends on your own preference, some might regard it as pink/ white noise while some absolutely can't stand the whirling sound. If you are planning to use it during bedtime, just keep it at the lowest speed. For power usage, ULTTY R21 100-240V ~ 50/60Hz has standard power usage that will not create a burden on your utility bill. You can run it comfortably day in day out in the background.
Noise TypeDecibels
ULTTY R21 Bladeless Fan<32 dB
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

A less known brand compared to Dyson, ULTTY R21 Bladeless Fan air purifier under 150 selling price is very attractive and accessible. For such a low price, you'll still get a powerful fan with a multi-stage HEPA filtration that offers complete air protection. Filter availability is good too where you can buy it in most online stores with a good discount. No need to hunt for compatible, third-party filters.
ULTTY Bladeless Fan air purifier R21 is available at most U.S. online outlets that carry home appliances. For the best deal, we recommend purchasing it via Amazon website as it is well-priced, bundled discount, free shipping (via prime), and 30 days return policy. ULTTY's official website offers similar perks bar the discounted price and bundled pack. You do have to go through the hassle of creating another account on their website though.

Final Thoughts On ULTTY R21 Bladeless Fan

Being a less known brand, ULTTY R21 Bladeless Fan still receives plenty of compliments from its buyers. The 90% 4-5 star ratings received focus on few things: the lightweight design that is very easy to use, silent operation that produces minimal noise, and excellent temperature control. They feel their indoor quality has gradually improved with less sneezing and coughing symptoms. The low price point is also another common praise where buyers will use Dyson as a benchmark. Only 5% of the users did not like what they received and most likely opt for a return. The complaints mainly focus on incomplete or damaged packaging, defective remote control, or limited airflow output which is contractive to the good feedbacks. Again the negatives are just too few to deter the positive reviews.


  • An inexpensive fan air purifier combination that cleans and cools the air at the same time.
  • Comprehensive 360° coverage with up to 320 square feet of room size.
  • Small bladeless Fan design that is safe for children and pet use.
  • Air multiplier technology with medical-grade H13 True HEPA filter that captures very fine particles.
  • Silver-ion medical coating that prevents the growth of mold and germs on the filter.
  • Very easy to use thanks to the highly adjustable fan speed and auto shut-off timer.


  • The lack of a carbon filter means it is not effective against smoke and odors.
  • Remote control will occasionally freeze and not responding.
  • Creates a distinctive whistling fan noise when running at a higher speed.

Verdicts And Ratings

Build Quality



Particle Filtration

Smoke Filtration


Filter Cost



ULTTY Bladeless Fan Air Purifier R21 review

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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