Blast Mini Mk II Air Purifier

5.00 out of 5
(5 customer reviews)
Up to 85m² (915 sqft)


For US orders, please visit our USA Store here.

The Blast Mini Mk II Air Purifier is a high-powered yet compact HEPA air purifier effective for large spaces like schools, hospitals and offices, cleaning spaces up to 85sqm. Add a carbon filter to filter out dangerous chemicals including VOCs, formaldehyde and cigarette smells.

Smart Air Pledge: 100% of profits go to providing more people with more clean air. 


Blast Mini Mk II Air Purifier

Compact yet Strong. Perfect for homes, offices and clinics.


Clean Air

85m² (915 sqft)

Coverage Area


Noise Level

Compact yet Strong

The Blast Mini Mk II is a compact, high-airflow air purifier that uses an aerodynamic design and industry- standard H13 HEPA filters to provide high volume purification for large spaces.

Protect yourself against air pollution with this office air purifier.

How the Blast Mini Mk II protects you from air pollution

Purifier vs. Smoke - Meet the Purifiers Fighting Bad Air [FULL LENGTH - PIANO]

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Air pollution is a serious environmental and health issue. And it’s hard to escape – even our homes are filled with these dangerous microscopic particles. The Blast Mini Mk II’s 3-stage filtration effectively traps dust, mold, pollen, and PM2.5 – the main cause of air pollution.  

PM2.5 VOCs Smoke Viruses
Allergens Dust Pollen Mold

The Blast Mini Mk II gives out as much clean air as 2.2 Blueair 203s in a minute

That’s a whole load of clean air!

It’s quieter too

If it’s more powerful than 2 Blueairs, it must be loud as heck, right?

It’s actually quieter. Think of it as the strong, silent type. A huge fan and an oversized HEPA means that more clean air can be pumped out at lower noise levels. You’ll hardly notice while it’s running.

Backed up by Open Data Tests

Alright, this photo is staged! But aeronautical engineer Paddy really did run over 200 tests on noise, particle capture, wind speed, and power usage. Because of this, the Blast can be a powerful yet quiet air purifier. And you don’t have to believe us. All this is backed up by thousands of hours of open data in our Clean Air Blog.

H13 Grade HEPA Filter

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

13 months
HEPA Lifespan
H13 99.95%
HEPA Grade

Blast Mini Mk II Activated Carbon Filter

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

Recommended for those with recent renovations, cook at home often, or stay near sources of pollution like factories.

Covers up to 85m² (915 sqft)

With that type of muscle, the Blast Mini Mk II can cover several rooms. Its quality finish and moveable design allows it to fit anywhere in your home or office.

2022 Blast Mini Mk II Updates

Air Outlet Redesign

Improved looks, airflow increase from 1200 to 1400 m3/hr , more clean air.

Rear Air Inlet

Removal of metal wire guard for a cleaner finish, easier to slide pre-filter in/out.

Pre-Filter Upgrade

All plastic design for thinner, lighter, easier to clean design. No more loose mesh.

Pre-Filter Screws

Hand twist screws for ease of use, more polished design.

HEPA Upgrade
Lighter with easier to handle environmentally friendly cardboard frame.

What’s inside a Blast Mini Mk II

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 Mini Mk II (includes 1 × Blast Air Mini Mk II Purifier and 1 × HEPA Filter), 1 × Wire cord, 1 × Smart Air Handbook
Color Matte White
Dimensions L × W × H (cm) 57.5 × 33 × 63
CADR (m3/h) 340 – 450 – 740 (low – mid – high)
Noise Level (dB) 35 – 43 – 49 (low – mid – high)
HEPA Lifespan 13 months (3120 hrs, running 8 hrs per day)
Power Consumption (W) 49 – 82 – 115 (low – mid – high)
Power Supply 220 – 230V/50-60Hz/ Plug type: (Type I)
Safety Certifications Smart Air purifier CE safety certificateCE Certified (LVD/EMC/RoHS) | CQC | GB/T 18801-2015 Certified
Suitable Room Size Up to 85m2 (915 sq ft)
Product Manual Click to view the Smart Air Blast Mini Manual
Shipping Weight 25.2-26.5 (kg)

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

Which Purifier Should I Buy?

Choosing the right air purifier can be difficult for first-time buyers. Here’re some important things to consider:

1. Know Your Purpose

Do you have any particular needs? HEPAs are enough for allergies and asthma, but recent renovation may require a carbon filter.

2. Know Your Size

The Sqair purifier is ideal for bedrooms, but larger spaces like offices or hospitals may require the more powerful Blasts.

3. Know the Costs

The main costs of air purifiers are filter replacements. Different purifiers have different HEPA lifespans and costs.

Smart Air Family

QT3 effective portable air purifier
QT3 Sqair SA600 Blast Mini Blast
Room Size

Personal Space

40 m²

60 m²

85 m²

130 m²

Effectiveness (CADR)

37 m³/h

315 m³/h

500 m³/h

740 m³/h

950 m³/h

Max Noise

44.5 dB

52 dB

52.5 dB

49 dB

43 dB

HEPA Lifespan 7 months 6 months 8 months 13 months 22 months

The Blast Mini Mk II FAQs

Are Smart Air purifiers better than other air purifiers?

Smart Air purifiers use the same cleaning principle as most other air purifiers. The technology behind air purifiers is not complex, and readily available.

However, Smart Air is the only air purifier company committed to transparent communication through open-data. We avoid overcomplicating our air purifiers with high markups and marketing gimmicks. Smart Air purifiers are honest, data-backed, and streamlined to do one thing: clean air.

And because we don’t overcomplicate things, our purifiers are some of the quietest and most energy-efficient on the market.

Can Smart Air’s purifiers filter COVID-19?

HEPA filter air purifiers like Smart Air’s have been shown to filter out COVID-19 viruses, and lower transmission. View the CDC data on how HEPAs reduce COVID-19 transmission here.

What pollutants does the Blast Mini Mk II filter?

Smart Air purifier’s HEPA filters capture many types of particulate air pollution, including nanoparticles as small as 5 nanometers (1/10th the size of COVID-19) to 30 μm (the size of pollen). The whole range includes viruses, bacteria, PM2.5, PM10, pet allergens, dust, and mold.

An additional activated carbon filter can be added on top of the HEPA filter in all of Smart Air’s products. The carbon filters can absorb VOCs (Volatile Organic Compounds) such as formaldehyde, paint thinners, petroleum fuels, or dry cleaning agents. Carbon filters also remove odors. Learn which filters you need in our in-depth guide on air purifier filters.

Learn which filters you need in our in-depth guide on air purifier filters.

Where should I position my Blast Mini Mk II air purifier?

Smart Air tests show the position of an air purifier in a room does not matter, as long as: 1) The air purifier is at least 6 inches (15 mm) away from the wall. 2) The air purifier is strong enough for the room it is in.

How to know when it is time to replace the Blast Mini Mk II’s HEPA filter?

We recommend replacing the Blast Mini Mk II filter every 13 months. But the truth is the exact time depends on many factors such as the number of hours used and local pollution levels. The most accurate way to determine when to replace a HEPA filter is to use an air quality monitor. Learn More: How to use an air quality monitor to test a HEPA filter

Additional information

CADR (m³/h)

340 – 450 – 740 (low – mid – high)

Noise Level (dB)

36 – 43 – 49 (low – mid – high)

Room Size

Up to 85m² (915 sqft)

Power (W)

49 – 82 – 122 (low – mid – high)

HEPA Lifespan

3120 hours (13 months with 8 hours of daily use)

5 reviews for Blast Mini Mk II Air Purifier

  1. 5 out of 5

    Hilary (verified owner)

    I bought the Blast Mini for my 800 sq ft classroom after seeing it recommended by epidemiologists and aerosol scientists on Twitter. This model offers the most air changes per hour for a room my size of any air cleaner I could find. I was considering several, more expensive air cleaners, so even with the shipping costs this was a relative bargain. But best of all is how incredibly quiet it is! I can easily hear and be heard above the soft, pleasant sound of this machine. Even my most soft-spoken students are audible with the Blast Mini on full power. Users in the US, be aware that you’ll need to purchase an up/down power converter and plug adapter to make this work; but it’s worth it! I am really glad to have found a way to keep my students safer (and school open!) during the pandemic

  2. 5 out of 5

    Jennie D. (verified owner)

    It’s somewhat bigger than I expected it to be, but boy does it ever work. Even on low, it cleared my bedroom of wildfire smoke within a very short time. It’s now in my office, to help keep the air clear of COVID-19, and I feel so much better knowing it’s there. Also, it’s so quiet! The highest level is of course still a bit noisy, but even the second level is really quiet.

  3. 5 out of 5


    Babies love smart air!

  4. 5 out of 5

    Alan G

    I had been looking to purchase one reasonably priced purifier that had the ability to clean the air throughout my three-bedroom apartment. The Blast Mini arrived on a day with particularly poor air in Beijing, which in this case was great, as it presented an immediate opportunity to test its effectiveness.

    First things first- the machine was somewhat larger than other air purifiers I had seen in friends’ apartments, restaurants, or offices. However, this is perhaps not surprising, considering the size of the fan and its immense power. The machine was easy to move around as it comes with wheels, which are lockable, so you don’t need to risk injury when moving it between rooms. The purifier itself is very simple: there are just three speeds, which is honestly all you really need in terms of functionality. The first thing that struck me when switching it on was just how quiet it was, even on full speed. It was just about loud enough for you to know it was on and working yet quiet enough for the sound to blend in with background noise and to not disturb you.

    One customization to the machine was that I opted for a carbon filter, as they’re designed to capture gas pollutants. Like many apartments in Beijing, my apartment occasionally becomes swamped in a lingering sewage smell stemming from the drain. I hoped that the carbon filter may be prove useful in such moments. I noticed that occasionally leaving the machine on a low power mode while out definitely helped minimise the sewage smell.

    On the Blast Mini’s first evening, the PM2.5 levels outdoors read 172 while indoors read 43: still 4 times higher than a healthy level. I positioned the Blast Mini in the living room and the air quality monitor in the spare bedroom, which was adjacent to my bedroom. I set up the air quality monitor to record levels hourly, opened all the doors in the apartment and switched the machine on. I then headed to bed.

    I was very impressed to see these results in the morning ! Within an hour, the Blast Mini successfully reduced PM2.5 levels to 31. Within 6 hours, PM2.5 levels were down to 8. This was throughout the entire apartment!

    Considering the machine’s power and reasonable price tag, the Blast Mini is definitely a smart investment. Would recommend to anyone looking for an effective and affordable solution to indoor air pollution!

  5. 5 out of 5


    I LOVE my Blast Mini. I bought it for the common area of my Dhaka (Bangladesh) apartment. Through our previous airpocalyptic winters here, I haven’t managed to get our PM2.5 solidly in the good range, despite using five additional Sharp purifiers throughout the apartment, which is a huge problem for me because I have young kids. I was lucky to buy my Sharp purifiers from a friend leaving Dhaka a few years ago so I got a good deal, though I’ve had to order replacement filters through Amazon India and pick them up at my in-laws house in Kerala when we visit. Now that Smart Air is in Dhaka (currently accessible through the Facebook Page Clean Air BD), it’s a game-changer. Apartments in Dhaka are huge, and very few people I know have a couple grand (or more?) to drop on purifiers to fully secure their indoor spaces. Plus, people love their cool winter air, which means opening the window sometimes in winter and letting the pollution waft in. The Blast Mini sits right in the center of my apartment, near both the kitchen and the common area where my kids spend most of their time. With this set up, the air inside is always in the green and I can breathe easy knowing my kids are protected. My husband really appreciates the lower noise of the Blast Mini compared to the Sharp purifiers (poor guy…). Plus, I think it looks super nice and you can even set stuff on top of it if needed (convenient!). Thank you Smart Air for your brilliance.

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Smart Air is a social enterprise and certified B-Corp that offers simple, no-nonsense air purifiers and provides free education to protect people from the harms of air pollution. We are proud to be the only certified B-Corp dedicated to fighting air pollution.

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