Peer-reviewed research in Building and Environment: mechanical ventilation retrofits cut classroom CO2 by around 28%, with a similar drop in PM2.5. And remember, the effect of filtration is additive. go.corsirosenthalfoundation.org.uk/CbgJhzO #IndoorAirQuality

Seventy years since the Great Smog forced Britain's first Clean Air Act. We cleaned up the sky. We have not finished the job indoors. go.corsirosenthalfoundation.org.uk/6lyy2vJ #CleanAir

We've been asked to comment on this study: go.corsirosenthalfoundation.org.uk/Y2lU9eB⁠ No disrespect, but the researchers seem to have tested air cleaning below commonly cited infection-control levels, based on untested assumptions about practicality. �� #CleanAir #AirFiltration

Last day. The 10% discount on the Smart Air SA700 ends tonight. Code CRFUK10. Every purchase helps us put one in a school that cannot afford it. Do not leave it. corsirosenthalfoundation.org.uk #CleanAir

Today's Your Last Chance! Buy an SA700 air cleaner from Smart Air with code CRFUK10 for 10% off. For every ten sold, we receive one donated in kind. go.corsirosenthalfoundation.org.uk/8yxbaUb #CleanIndoorAir #HealthyAir

We spend around 90% of our time indoors. Indoor air can be two to five times more polluted than the air outside. Ventilation and air filtration are practical steps that make a real difference. corsirosenthalfoundation.org.uk #IndoorAirQuality #CleanAir

It's the Final 48 Hours! Buy an SA700 air cleaner from Smart Air with code CRFUK10 for 10% off. For every ten sold, we receive one donated in kind for someone who needs it. go.corsirosenthalfoundation.org.uk/8yxbaUb #CleanAir #IndoorAirQuality

48 hours left. The 10% discount on the SA700 ends 30 June. Code CRFUK10. 490 m³/h of clean air delivery, ultra quiet, and every sale helps another school. corsirosenthalfoundation.org.uk #CleanAir #IndoorAirQuality

3 days left. Schools and families on our waiting list need clean air too. Buy a Smart Air SA700 at 10% off with code CRFUK10. For every 10 sold in June, Smart Air donates one to us. corsirosenthalfoundation.org.uk #CleanAir

4 days left. Children cannot choose the air in their classroom. The Smart Air SA700 is 10% off with code CRFUK10. Every sale helps us put one in a school that needs it. corsirosenthalfoundation.org.uk #CleanAir

Air pollution costs the UK £50 billion a year and shortens the average lifespan by 1.8 years. The Royal College of Physicians says it is a public health emergency, not just an environmental one. go.corsirosenthalfoundation.org.uk/G4e3Uer #CleanAirUK #PublicHealth

5 days left. We've helped schools like Burley Oaks and Lessness Heath deploy air cleaners. The Smart Air SA700 is 10% off with code CRFUK10. Every sale in June helps us help another school. corsirosenthalfoundation.org.uk #CleanAir

96% of English and Welsh neighbourhoods exceed WHO guidelines for fine particulate matter. Air pollution costs 30,000 lives and £50 billion a year. The Royal College of Physicians is calling it a public health emergency. go.corsirosenthalfoundation.org.uk/G4e3Uer #CleanAirUK #PublicHealth

6 days left. Lessness Heath Primary clean their air. Children who breathe clean air focus better. Help another school do the same. 10% off the Smart Air SA700 with code CRFUK10. corsirosenthalfoundation.org.uk #CleanAir #SchoolAirQuality

7 days left. Burley Oaks Primary deploy Smart Air air cleaners for quiet air cleaning. Help other schools join them and get an air cleaner of your own. 10% off with code CRFUK10. corsirosenthalfoundation.org.uk #CleanAir #SchoolAirQuality

10% off the Smart Air SA700 ends 30 June. If you are buying an air cleaner for a school, clinic, home or community space, this is the window. 720 m³/h CADR. 12 watts. Built to run all day. go.corsirosenthalfoundation.org.uk/tI04lSt #CleanAir #IndoorAirQuality

8 days left. The Smart Air SA700: 490 m³/h CADR. Ultra efficient. Ultra quiet. 10% off with code CRFUK10. A great air cleaner at a great price. corsirosenthalfoundation.org.uk #CleanAir #IndoorAirQuality

One week left. Smart Air SA700 is 10% off until 30 June. 720 m³/h CADR. 12 watts. 43 dB. Nine computer fans built for continuous use in homes, schools and clinics. go.corsirosenthalfoundation.org.uk/tI04lSt #CleanAir #IndoorAirQuality

9 days left. 10% off the ultra efficient Smart Air SA700 with code CRFUK10. Every sale this June helps us supply more schools with air cleaners. corsirosenthalfoundation.org.uk #CleanAir #SchoolAirQuality

We are reposting this for our friends over at LongCovid Kids. Please give them your support: go.corsirosenthalfoundation.org.uk/jYXn3qn #LongCovid #LongCovidKids #PublicHealth

Happy Father's Day. How about a super quiet, efficient air cleaner for a gift? At 10% off? One that helps others to have one of their own? If that sounds good, we may have a solution. Code CRFUK10 corsirosenthalfoundation.org.uk #CleanAir

Jonas Grau Thomsen crossed three continents in a wheelchair. Tonight in London he speaks about technology as a tool for inclusion. Clean air matters to people who are clinically vulnerable. Join us free. go.corsirosenthalfoundation.org.uk/LnOOgmF #CleanAir #Inclusion

Tonight in London: Jonas Grau Thomsen speaks about technology and inclusion for people with physical vulnerability. Many of those we help at CRF UK are clinically vulnerable. This conversation matters. Free. go.corsirosenthalfoundation.org.uk/LnOOgmF #CleanAir #Inclusion

A University of Leicester study tracked 5,000 people from birth to 24. Air pollution is associated with slower lung growth in children. Lower adult lung function carries similar cardiovascular risk to high cholesterol. go.corsirosenthalfoundation.org.uk/leicester-lu... #CleanAir

Register now: Jonas Grau Thomsen speaks online this Friday on technology, inclusion and the clinically vulnerable. He crossed three continents in a wheelchair. Clean air is part of this. Free. go.corsirosenthalfoundation.org.uk/LnOOgmF #CleanAir #Inclusion

The SA700 uses computer fans to deliver 490 m³/h of clean air at just 10 watts and 42 dB. Computer fans run efficiently and quietly by design. Continuous filtration that barely registers. 10% off until 30 June. go.corsirosenthalfoundation.org.uk/tI04lSt #CleanAir #IndoorAirQuality

Not everyone can afford an air cleaner. We are trying to change that. If you need one, you can apply. If you can help fund one, you can donate. Both matter. go.corsirosenthalfoundation.org.uk/Bkh924y #CleanAir #BreathingMatters

Three days away. Jonas Grau Thomsen joins our trustee on 19 June. It is our thank-you to supporters and it is free. He is a genuinely interesting speaker. Donations are always welcome. go.corsirosenthalfoundation.org.uk/LnOOgmF #CleanAir #HealthyAir

Clean Air Day is on Thursday 18 June. Three days away. This year's theme asks schools, workplaces and health services to speak up about air pollution. Children cannot choose the air in their classroom. We can choose to speak. go.corsirosenthalfoundation.org.uk/Bkh924y #CleanAirUK #CleanAir

Clean indoor air should not be a luxury. We donate air cleaners to people who cannot afford one. If you can give, you are helping a school, a home, or a shared space breathe better. Donate now: go.corsirosenthalfoundation.org.uk/BLalB4j #CleanAir #BreathingMatters