Air Purifiers for Schools and Universities

The brand trusted by hospitals, schools and businesses globally

Air purification in classrooms

Elevated CO2 levels is the current measurement for indoor viral transmissions rates with the natural ventilation as the primary mitigation factor.

However, balancing natural ventilation with reasonable temperatures can be a challenge in the colder months. And if the school is located in a polluted neighbourhood, health issues can arise from long-term exposure to outdoor air pollution. This means that a school has to juggle multiple strategies:

  • COVID strategy
    • class bubbles / face masks
    • opening windows vs thermal comfort / noise
    • monitoring CO2
  • Indoor air quality strategy
    • management of particle pollution including pollen, dust and viruses
    • reducing outdoor air pollutants, including traffic fumes, which finds its way inside even with doors and windows closed
    • chemicals in the air from cleaning products, paint, furnishing, furniture, flooring etc

Focusing on one and not the other can impact the health of teachers and pupils so consider installing portable air purifiers to supplement your ventilation strategy.

A good air purifier will yield excellent results

  • In 2015, a big leak at a natural gas facility in the US resulted in the company paying for air filters in every classroom, office and common area in ALL schools within a five mile radius. After 4 months, Math scores went up by 0.20 and English scores by 0.18 standard deviations. These same results could be achieved by cutting class sizes by 1/3rd
  • London School of Economics studied university students’ test performance relative to air pollution levels on the day of the test alone. Results showed that taking a test in a filtered rather than unfiltered room would raise test scores by 0.09 standard deviations
  • Researchers gave 35 healthy Shanghai university students real or fake air purifiers and tracked several health markers for two days. They found that after 48 hours, the students had significantly lower inflammation in their blood vessels. They also had lower blood coagulation (a marker of blood clotting) and less constricted blood veins
  • In 2018, Goose Green became the first state school in London to install air purifiers in every classroom. They have anecdotal evidence of improvements in asthma symptoms and coughing fits
  • 3 schools in Camden had high PM levels, some up to 40 times greater than WHO levels. Air purifiers were installed in all classrooms. Since installation, staff noticed a decrease in sick absence amongst both children and teachers

HEPA Air Purifiers to Combat Viruses, Allergens and Pollution

Blast Mini

From £399

Quiet design with 585m3/hr CADR for office rooms up to 85m² (915 sq ft).


From £582

890m3/hr CADR for large office spaces up to 130m² (1400 sq ft).

Reduce COVID-19 Transmission In Your Classroom

The CDC recommends HEPA air purifiers like Smart Air's to lower the spread of COVID-19.

Protect your classroom today with our simple, data-backed HEPA air purifiers.

Why Choose Smart Air for the Classroom

Our focus is on creating the most effective air purifiers driven by data and at a fraction of the cost of the competition.

We believe everyone deserves to breathe clean air.

Smart Air Purifiers



Energy-Efficient Design

CE, RoHS Certified

Certified B-Corp

Full Warranty

"As a busy primary school, it is essential that any form of equipment being used in classrooms does not disrupt learning. We have found that the Smart Air Blasts currently being used in the school are quiet enough that teaching is generally not disrupted, even on the higher speed settings, helping us to try and improve air quality in a way that doesn't impact on learning. The devices themselves are incredibly easy to install and then use, with a very simple speed setting switch on the rear of each unit. We currently have children in charge of turning them on each day which really shows how simple they are to operate. Day to day, they require little maintenance, and the simple design also helps our staff to ensure they are switched on as it doesn't take a long time or disrupt their day - which is very busy! Each unit does create air flow from the front panel which is very useful on hotter days - additional air flow has helped to cool rooms which have south facing windows. The air flow itself can be directed easily by turning the device, ensuring that it does not impact on the children themselves. Overall we have found that the Smart Air Blasts are a very easy to use, not overly disruptive option for air purification in our school as well as offering relatively low running costs which are essential in the current educational climate of shrinking budgets."

- Richard Jackson, Deputy Head, Lessness Heath Primary School

Quiet Operation, Designed for Schools

With noise levels of just 48dB on high, your classroom will hardly notice the Blast's whisper-quiet operation.

Trusted by Schools to Protect Against COVID

Schools worldwide use Smart Air purifiers to protect against and reduce COVID-19 transmission.

Embassies are breathing Smart Air

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Smart Air low cost purifiers

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

Certified B-Corp air purifier company