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£5.9m technology will improve air quality and disinfect classrooms in Welsh schools and universities

30 Aug 2021 3 minute read
Education and Welsh Language Minister, Jeremy Miles

The Welsh Government have announced that they will spend £5.9m on technology to improve air quality and disinfect classrooms and lecture theatres in schools, colleges and universities.

Funding for more than 1,800 ozone disinfecting machines and over 30,000 CO2 sensors will be provided for schools, colleges and universities throughout Wales.

The ozone disinfecting machines, costing £3.31m, will reduce cleaning times, improve disinfection and reduce costs.

The funding is expected to supply more than 1,800 machines, at least one for every school, college and university in Wales.

The 30,000 CO2 ‘traffic light’ monitors, costing £2.58m, will include sensors which provide a visual signal of deteriorating internal air quality.

The monitors will alert teachers and lecturers when CO2 levels rise, notifying them when air quality needs to improve, thereby aiding the control of ventilation during the winter.

This will help maintain comfortable temperatures for learners and staff during colder periods, reduce heat loss and save on energy costs, they said.

‘Keep our guard up’

The Minister for Education and Welsh Language, Jeremy Miles, said he was pleased that learners will be able to return to classrooms and lecture theatres in the autumn with fewer restrictions in place.

“This investment in CO2 monitors will help improve air quality, while the disinfecting machines will enable classrooms to return to normal use quicker,” he said.

“This supports our common goal of ensuring learners can continue learning together with their teachers and friends.

“But we must keep our guard up against Covid-19. These measures will complement, rather than replace our current advice – which includes ensuring hygiene is maintained, and washing hands thoroughly and more often than usual.”


Scientists at Swansea University developed an Ozone disinfecting machine, after the time and cost of cleaning rooms was identified as an issue for schools and colleges early in the pandemic.

To address the issue, the Welsh Government asked Swansea University to establish an Ozone Classroom Decontamination Project, backed by Welsh Government funding.

The machines can be used to quickly disinfect classrooms when clusters of Covid-19 or other communicable viruses are identified, such as norovirus.

Dr Chedly Tizaoui of Swansea University, part of the team who designed the ozone disinfection machine, said he was delighted the technology would support efforts to eradicate Covid-19 in Wales.

“Reducing the spread of coronavirus in our educational institutions is vitally important, so our children and students can get back to the classroom,” he said.

“Ozone is potent against Covid-19 virus and due to its gaseous nature, it kills the virus whether be it airborne or adhered to a surface.

“Thanks to the support received from the Welsh Government and the Active Buildings pioneered by SPECIFIC, our research demonstrated that buildings can be Active on the inside and the ozone treatment developed here can be incorporated to support cleaning and disinfection of public buildings.”

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Steve Duggan
Steve Duggan
2 years ago

The misconception in the past was that big was the best option for a country. However, smaller countries (admittedly with a close connection to other countries through organisations like the EU) are in many ways better. The happiest, safest and more equal countries of the world all have small populations – New Zealand and Norway, for example. My point here is that Wales can join them, we can be as prosperous as them and this initiative in educational complexes shows we can do it.

2 years ago
Reply to  Steve Duggan


Steve Duggan
Steve Duggan
2 years ago
Reply to  Llewelyn

Why ? No belief in your country?

j humphrys
j humphrys
2 years ago
Reply to  Steve Duggan

True, though it’s not instant. I’m not a great fan of the EU, but I must admit being a member of the EU has certainly aided Finland. I’ve seen the change with a bit of envy. Then Estonia in the nineties. Wales can do it too.

Sebastian Hassell
2 years ago

California is admittedly a long way from Wales, but we have similar concerns about school air quality as well as utility funded grant programs to install CO2 monitors as part of a larger solution. Our company build a low cost and easy to install CO2 monitor specifically for this application, and it includes an educational app so students can learn about CO2:

Edward Mcfarlane
Edward Mcfarlane
2 years ago

Is there any data monitoring or reports been produced from these CO2 sensors for longer term efficiencies?

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