Blast Air Purifier

5.00 out of 5
(9 customer reviews)


The Blast FFU Air Purifier is a high-powered air purifier, with simple design aerodynamically tailored to be effective for large spaces like schools, hospitals and offices, cleaning spaces up to 130sqm.

Add a carbon filter to filter out dangerous chemicals including VOCs, formaldehyde and cigarette smells.


Blast Air Purifier

Suitable for offices and hospitals

890 m³/h

Clean Air


Coverage Area


Noise Level

How the Blast protects you from air pollution

China’s pollution has long been a serious environmental and health problem. Despite small improvements during the COVID-19 lockdown, air quality in all of China’s major cities were still over the WHO limit in 2020. The Blast’s massive H13 HEPA filter effectively traps dust, mold, pollen, and PM2.5 – the main cause of air pollution.









Powerful and efficient – your lungs will have a “Blast”!

The Blast is simple. It’s a fan and a filter, packed into one box. But it’s also simply powerful. We’ve tweaked every part of this machine to give it the max performance for the money.

1800 m³/h
890 m³/h
Clean Air (CADR)

Over 200 tests

Alright, alright, we staged this photo. But aeronautical engineer Paddy really did run over 200 tests on noise, particle capture, wind speed, and power usage. That’s how it can be strong and yet quiet. has days and days of raw room test data for the nerd curious!

The Blast gives out as much clean air as 3.4 Blueair 203s in a minute

That’s a whole load of clean air!

It’s quieter too

If it’s more powerful than 3 Blueairs, it must be loud as heck, right?

It’s actually quiet. Think of it as the strong, silent type.

The Blast contains a huge fan, and an oversized HEPA, this means that it can pump out more clean air at lower noise levels.

H13 Grade HEPA Filter

Chosen among 10 different tested HEPA materials. Effectively filters 99.95% of PM2.5, dust, pollen and viruses.

22 months

HEPA Lifespan

H13 99.95%

HEPA Grade


Expanded Area

Blast Activated Carbon Filter

Add a carbon filter to your Blast if you need to remove odours. Absorbs formaldehyde, volatile organic compounds (VOCs) and other harmful gases.

Covers up to 130m²

With that type of muscle, the Blast can cover big apartments, offices, or gyms.

(Or run it on low in a normal apartment, and you’ll have the quietest clean air on the block.)

What’s inside a Blast

Purifier companies can make obscene profits when most people don’t understand how purifiers work.
Here’s the honest truth: a purifier is a fan + a filter. In this case, that fan and filter are just really big.

Technical Specifications

Your Purchase Includes 1 × Blast (includes 1 × Blast HEPA Filter), 1 × Wire cord, 1x × Smart Air Handbook
Colour White
Dimensions L × W × H (cm) 57.5 × 33 × 123
CADR (m3/h)* 507 – 680 – 890 (low – mid – high)
Sound (dB) 37.9 – 43.3 – 48 (low – mid – high)
Power Consumption (W) 64 – 88 (low – high)
Power Supply 220 – 240V / 50-60Hz / Plug type: (Type I)
Safety Certifications Smart Air purifier CE safety certificate CE Certified (LVD/EMC/RoHS) | GB/T 4706.45-2008 Certified
Electricity Voltage (V) 220 – 240
Recommended Room Size Up to 130m2
HEPA Lifespan 19-22 months

*What is CADR and how is it different from an air purifier airflow? Learn more here »


Additional information

Weight 38 kg
Dimensions 58 × 33 × 123 cm

Hospital, Living Room, Office/School


Allergies, Dust & Pollen, Gases & VOCs, Pet Dander & Hair, PM2.5 Air Pollution, Smoke & Odours, Virus & Bacteria

Filter Type

HEPA + Carbon Filter, HEPA Filter

9 reviews for Blast Air Purifier

  1. 5 out of 5

    Anna (verified owner)

    We couldn’t be happier with our Blast. I work in a large apartment that has been converted into an office. Some of my co-workers have small purifiers in their closed offices, but my desk is in the 70m2 open-plan living room and the front door is often cracked open to run cables back and forth so I knew we needed a powerful unit. The Blast arrived just in time for the recent Beijing sandstorm (2000+ AQI outside) and it was down to 30 AQI within half an hour. I couldn’t believe it, nor how quiet the machine is. It’s almost silent, even on the highest setting. We’re in love!

  2. 5 out of 5

    Brian Meyers (verified owner)

    Everything from the shipping packaging, design, quality of build is exceptional. Being unable to see a product in-person can be daunting. I cannot be more pleased with the Smart Air Blast.

    Brian, Chiang Mai, Thailand
    Chiang Mai air purifier

  3. 5 out of 5

    send2willc (verified owner)

    Shipping was quick to my office in Xi’an. Arrived sooner than promised.

    I am very impressed with the construction — sheet steel is thick, finish is uniform, 3-speed fan is quiet — quiet enough for an office setting even at the highest fan speed.

    The Blast is so simple that it hardly needs any instructions. I had it unpacked and running in less time than it took me to configure the AirVisual Pro Air Pollution Monitor. I also got the monitor in order to know how bad things were in the office. When I unpacked the monitor, the air quality in my office was exactly the outdoor reading. What I like about the monitor is that it exports data, so I could see how the Blast was doing. It cleared the PM2.5 matter from a 3.5mx6mx2.8m office in less about an hour. I plotted readings. (yes, I am a data geek)

    Plot of first hour clearing PM2.5:

    R-code for plot:

    Clean healthy fun!

  4. Liz (verified owner)

    We love the Blast. Our particle counter reading is now 0 or 4! A wonderful peace of mind to finally have clean air in our home in China. It is indeed a big unit so finding the space was a little tricky and the fan blows a lot of cool air so we need to turn it around when sitting near it. Will be welcomed in summer! We are not bothered by the noise definitely quieter than Xiaomi and the Smart Air Cannon.

  5. Duncan

    These are awesome. We have one in our bedroom at full blast constantly and have never considered it loud at all. We watch films fine and don’t even notice it. And we sleep in perfectly clean air… seems like a pretty good deal to me! Thanks guys!

  6. marcel.morgan (verified owner)

    Great service, delivered promptly before expected. Seriously notice the difference when I plugged it in and it is only summer.
    I’m not sure what everyone is talking about, referring to noise etc. the unit is pretty damn quiet…
    thanks team, I will recommend your product to other ex-pats like myself. Cheers ?

  7. Ak (verified owner)

    Awesome reply. My wife and I are so happy. We are tickled pink that we this unit will be truly silent! It is a sign of what I felt to be true about SmartAir. Mistakes happen so its the response that is the measure of character. A company that quickly takes responsibility for mistakes is rare and commendable. Regarding pricing: I appreciate the detailed response.

  8. Ak (verified owner)

    Strong but…LOUD.

    I wanted to love this unit but overall I am disappointed and give it 2 stars. The Blast cleans the air very well but it is not quiet. I have a small, 2 bedroom apartment in Dalian, China and bought the Blast specifically thinking I can run it on low (quiet) mode. But there is a big problem.

    The Blast produces an annoyingly loud, electrical buzzing sound. How loud? It is very audible at low speed. For me and my wife, the buzzing is too loud to run the Blast at the low speed (quietest) setting, which is why we bought the filter. It is a shame because the fan speed at low is quiet but the buzzing is intolerable. If you have the TV or music on all the time (meaning you sleep with one of them on) its probably ok but we like quiet so no go. At medium speed, the fan does a pretty good job of hiding the sound of the buzzing. I can tolerate it at medium but if you are sensitive to noise pollution it will probably bother you. The fan at medium is a bit loud. Depending on your acoustics and lifestyle (ie you like a quiet house, you have many hard surfaces) you may not like it. At high you can’t hear the buzzing but for our size apartment that is too loud. Moreover, we bought the Blast specifically for the low/quiet mode. In short, if you buy this and you don’t like a buzzing electrical sound (and have an otherwise quiet place – meaning you aren’t always watching TV or listening to music), plan to run it at medium or high. Another problem related to the noise: I can’t run this in a 14 sq meter room with the door closed because at medium it creates too much circulation and at low I hear the irritating, buzzing, electrical sound. For a single bedroom that is 15 sq meters this unit is too strong unless you can tolerate the low speed buzzing sound.

    Perhaps I have a defective unit. If not, I am unhappy with this unit and feel the claims of it being quiet are misleading. SmartAir does a great job of being transparent, which is a rare thing, but in terms of full disclosure on noise for this item they dropped the ball unless, of course, I have a defective unit and they can replace it (then I would be thrilled and give this 10 stars). If I knew this about the product, I would have kept looking or maybe bought the mini Blast. At the moment, I sort of feel cheated. I invite Smart Air to fix this problem and, in the meantime, inform customers about this issue.

    What about the air quality? On the upside, the filter a superb job of cleaning the air. I don’t have a particle counter but my lungs want to take a deep breath for the first time since I’ve been in China. Note: I don’t have the carbon filter because Dalian air is bad due to PM (not gases) and I don’t have new furniture/fixtures, etc so no off-gas.

    I find the unit costly at 1,980 yuan (~$310). It is the same as competition except for the Xiaomi, which I didn’t consider because it is too loud. But I wish SmartAir was pushing the envelope on price for all their units and not just the DIY option.

    It is bulky and heavy but comes with great wheels and it looks pretty nice. It also sports a quality electrical cable but I wish the cable was a couple feet longer.

    • Paddy Robertson

      Hi AK, Paddy here from the Smart Air office in Beijing! Thanks for writing the long review and giving us all this useful info. It sounds like your biggest concern with the Blast is with the noise levels. All air purifiers have motors in them, which are what typically give off the most noise. If a purifier seems to be totally silent (like some purifiers when in sleep mode) then it probably means it isn’t doing anything to clean your air. We tested the Blast in 2 different labs for noise, and the numbers above show it’s much quieter than other purifiers out there. Having said that, everybody has different perceptions of noise and some people are more sensitive, if the noise is really a problem then it might be hard finding something that will work right for you. We run 2 Blasts in the Smart Air office constantly, and it doesn’t affect our work. In fact we all like the ‘whooshing’ noise – it reminds us we’re breathing clean air!

      Whether or not the Blast pushes the envelope on pricing can be answered by looking at the cost per effectiveness of this purifier compared to other purifiers. The ‘bang for your buck’ of this machine is still much much higher than other similarly priced machines (we’ve worked hard to pack as big a HEPA as possible into the machine whilst still keeping the costs down). Similarly priced machines may only have a CADR in the range of 300-400cbm/hr, whereas the Blast has a CADR of 890cbm/hr. We also did make a conscious decision when designing the Blasts to go for a better finish and higher quality than previously (for example, coating the whole machine in white paint as opposed to leaving parts as ‘bare metal’, or sourcing a bigger/more effective HEPA filter and carbon material). These things have definitely brought the costs of the machine up, but we did work very hard to get the balance between cost and quality right for the Blasts.

  9. timothy.percevecz (verified owner)

    Love it!
    To say the least. As a new ex pat in China, buying an air purifier could have been a real headache, but Smart Air helped immensely. I did my research and it made sense to choose SmartAir. It arrived quickly as it had to be shipped. A couple of days after using it a friend with an egg that reads air quality stopped by and honestly, I was concerned. Even told my wife perhaps we are better off not knowing because if we don’t like the results, what could we do?
    That wasn’t a worry because the results were better than expected. Phew.
    I know quite a few people who have bough purifiers since they moved here and I am 100% confident I made the best decision to purchase from Smartair. Some who already bough a purifier are considering buying a SmartAir because their more expensive machines are not cleaning their air nearly as well.

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