crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 30/09/2026Today is the last day of our Smart Air campaign. Until midnight, for every ten SA600 air cleaners sold through it, Smart Air UK donates one in kind to us. Thank you to everyone who bought through it this week. go.corsirosenthalfoundation.org.uk/rVPxdej #CleanAir #SA600 022
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 28/09/2026A review in Pediatric Research (27 Aug) found just 3 studies globally have properly tested indoor air against children's thinking or behaviour. A shocking lack of research into this area. www.nature.com/articles/s41... #CleanAir #IndoorAirQuality 021
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 28/09/2026Our partnership with Smart Air closes on 30 September. Until then, for every ten SA600 air cleaners sold through this campaign, Smart Air UK donates one in kind to us. If an air cleaner has been on your list, these are the final days. go.corsirosenthalfoundation.org.uk/rVPxdej #CleanAir #SA600 000
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 22/09/2026Nine days left. The mechanic behind our Smart Air partnership is simple: buy ten SA600 units, one is donated to us in kind. Real air cleaners reaching families and settings who could not otherwise afford one. #CleanAir #SmartAir go.corsirosenthalfoundation.org.uk/rVPxdej 000
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 19/09/2026A short autumn checklist: service the boiler, sweep the chimney if you use one, air the bathroom and kitchen after cooking or showering, check your air cleaner's filter. Our SA600 sponsorship with Smart Air UK ends in 11 days. #CleanAir go.corsirosenthalfoundation.org.uk/rVPxdej 010
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 18/09/2026If you are responsible for air quality decisions in a school, office or public building, two acronyms are worth knowing. CADR is how much clean air a unit delivers per hour. ACH is how many times the air in a room is fully replaced per hour. #CADR #ACH go.corsirosenthalfoundation.org.uk/lDBUoiH 064
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 17/09/2026A week of real office monitoring: indoor CO2 spiked to around 1,400ppm on occupied days against a flat 416ppm outdoors. Indoor PM2.5 twice crossed the WHO guideline while outdoor stayed low. One office, one week, a useful snapshot. #IndoorAirQuality go.corsirosenthalfoundation.org.uk/lDBUoiH 042
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 16/09/2026Every air cleaner we place goes to a family, school or community setting that could not otherwise afford one. Right now, for every 10 SA600 purifiers sold, Smart Air UK donates one to us, until 30 September. #CleanAir go.corsirosenthalfoundation.org.uk/rVPxdej 050
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 15/09/2026There is a new, free UK government air quality alerts service. Sign up and it will tell you when outdoor pollution is high in your area, useful before you decide how wide to open a window. #CleanAir #IndoorAirQuality go.corsirosenthalfoundation.org.uk/u2pgw5F 010
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 14/09/2026Today, Parliament's Environmental Audit Committee hears oral evidence on air pollution in England. We would welcome indoor air getting equal attention to outdoor air in that conversation. #IndoorAirQuality go.corsirosenthalfoundation.org.uk/bGNfPGy 022
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 05/09/2026A 2026 review of UK classroom studies found portable air cleaners with air filters reduced PM2.5 by up to 48% and PM10 by up to 57%, though results varied. Filtration is one practical layer for cleaner classroom air. go.corsirosenthalfoundation.org.uk/Sp2QOuv #CleanAir #IndoorAirQuality 020
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 03/09/2026We are delighted to announce the continuation of our partnership with Smart Air. This has resulted in beneficiaries including schools and families receiving air cleaners so please spread the word and support it: go.corsirosenthalfoundation.org.uk/rVPxdej #CleanAir #IndoorAirQuality 000
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 02/09/2026Clean indoor air should not be a luxury. We supply air cleaners to homes, schools and community spaces across the UK that cannot afford to buy one. If that is you, you can apply here. go.corsirosenthalfoundation.org.uk/ozJPNER #CleanAir 062
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 01/09/2026SAMHE analysed 38,000 school days of air quality data from 346 UK schools. Among its recommendations: update school air quality guidance so it focuses on good ventilation and good air quality. Worth a read as the new term starts. go.corsirosenthalfoundation.org.uk/vhzgJ98 #CleanAir 022
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 31/08/2026Students move into halls and shared houses next month. Small rooms, restricted windows, washing dried indoors, and a lot of people sharing the same air. Worth a short conversation before term starts. go.corsirosenthalfoundation.org.uk/JNmW9Xo #CleanAir 065
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 30/08/2026A systematic review in Environment and Health has gathered the evidence on air cleaning and health. The conclusion is a measured one: a promising way to reduce exposure to household air pollution. go.corsirosenthalfoundation.org.uk/0rmFe9P #CleanAir 000
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 29/08/2026Open a window is good advice most of the time. It is harder on a main road, in a noisy street, in a ground floor flat, or in January. Filtration covers the hours when ventilation cannot. go.corsirosenthalfoundation.org.uk/JNmW9Xo #CleanAir 061
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 28/08/2026Scented candles, plug-in fresheners and spray cleaners all release volatile organic compounds, or VOCs, into the air of a room. A fresh smell is not the same thing as clean air. go.corsirosenthalfoundation.org.uk/JNmW9Xo #CleanAir 033
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 27/08/2026New study in Frontiers in Pediatrics: portable air cleaners reduced fine particle levels by around half in standard classrooms and a nursery. In houses repurposed for childcare, they did much less. The building matters. go.corsirosenthalfoundation.org.uk/VrpQU16 #CleanAir 041
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 10/08/2026Clean indoor air should not be a luxury. We supply air cleaners to households, schools and community spaces that cannot afford to buy one themselves. If that sounds like you, you can apply here. go.corsirosenthalfoundation.org.uk/rhWEulY #CleanAir 063
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 09/08/2026Air pollution costs the UK economy an estimated £27 billion a year, rising to around £50 billion with wider health impacts counted, MPs heard in a Commons debate last month. go.corsirosenthalfoundation.org.uk/wMSixzj #CleanAir 000
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 07/08/2026Term starts soon. One question worth asking your school: how are classrooms ventilated on cold or wet days, when the windows have to stay shut? A calm question asked in August is easier than one asked in November. go.corsirosenthalfoundation.org.uk/Mo1zR7v #CleanAir 020
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 06/08/2026Safe Air Schools UK started as a parent-led group. Its work through the National Allergy Strategy has helped inform England's statutory guidance on allergy safety and air quality in classrooms. Patient advocacy, turned into policy. go.corsirosenthalfoundation.org.uk/XF6uEAr #CleanIndoorAir 031
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 05/08/2026Peer-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 011
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 04/08/2026Seventy 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 064
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 29/07/2026Perhaps a better approach would have been to establish if, where and at what level air cleaning makes a difference. Only then ask what level of intervention people actually consider practical. #CleanAir #AirFiltration #AirQuality #PublicHealth 031
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 29/07/2026Our response to COVID differs from our response to the common cold, which differs from our response to a bad flu season. What people consider practical depends very much on what they're protecting themselves against. 140
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 29/07/2026There's no information on whether, or how, the researchers tested their assumptions about what is pragmatic and practical. We know what the majority considers pragmatic and practical varies with the level of perceived need. 150
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 29/07/2026According to carehome.co.uk, the average UK care home caters for around 47 residents. The list of participating care homes is published. We don't know how many rooms each has. But on this figure alone, there appears to be potential for incomplete air-cleaner coverage.carehome.co.uk 160
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 29/07/2026Additionally, each care home could receive a maximum of five air cleaners for communal areas and 16 for private rooms. 140
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 29/07/2026Compliance was self-reported. Figures of 96%+ are impressive, but they remain self-reported rather than independently verified. 140
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 29/07/2026Baseline ventilation also wasn't measured. If these care homes were already well ventilated, adding low-intensity air cleaning wouldn't necessarily be expected to have much effect. 171
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 29/07/2026For infection control, commonly cited air change rates are 4-6 ACH, and can exceed 12 ACH for some diseases in some settings. 192
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 29/07/2026This delivers relatively low levels of air cleaning. In a 60m³ lounge, a 160m³/h CADR can provide an absolute theoretical maximum of just under 3 ACH. In a 30m³ room, 60m³/h can provide an absolute theoretical maximum of 2 AC 192
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 29/07/2026Air cleaning was deployed at low intensity. 160m³/h CADR in communal areas and 60m³/h in private rooms. These settings followed manufacturer guidance and were chosen for reasons of practicality. (More on that later.) 1103
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 29/07/2026First, the study doesn't prove what some people might think it does. It doesn't prove that air cleaning doesn't suppress the airborne transmission of infections. 1104
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 29/07/2026We'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 #AirFiltrationgo.corsirosenthalfoundation.org.uk 1178
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 30/06/2026Last 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 032
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 30/06/2026Today'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 021
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 29/06/2026We 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 095
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 29/06/2026It'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 032
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 29/06/202648 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 010
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 28/06/20263 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 000
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 27/06/20264 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 022
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 26/06/2026Air 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 010
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 26/06/20265 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 011
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 25/06/202696% 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 010
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 25/06/20266 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 083
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 24/06/20267 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 020
crboxfoundationuk.bsky.social @crboxfoundationuk.bsky.social · 23/06/202610% 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 022
