LET'S AIR (@nousaerons) 's Twitter Profile
LET'S AIR

@nousaerons

News, scientific mediation and infographics on ventilation & indoor air quality. letsair.org (in πŸ‡¬πŸ‡§) & nousaerons.fr (in πŸ‡«πŸ‡·). Also on BlueSky.

ID: 1379037129314025474

linkhttps://letsair.org calendar_today05-04-2021 11:45:03

4,4K Tweet

6,6K Followers

497 Following

LET'S AIR (@nousaerons) 's Twitter Profile Photo

In 1888, S.H. Woodridge was already teaching at Massachusetts Institute of Technology (MIT) how to ensure good indoor ventilation by measuring CO2 levels. The thresholds he recommended are almost identical to those recommended in 2025 (we've updated the 1888 values because the outdoor CO2 level was then 300ppm).

In 1888, S.H. Woodridge was already teaching at <a href="/MIT/">Massachusetts Institute of Technology (MIT)</a>  how to ensure good indoor ventilation by measuring CO2 levels. The thresholds he recommended are almost identical to those recommended in 2025 (we've updated the 1888 values because the outdoor CO2 level was  then 300ppm).
LET'S AIR (@nousaerons) 's Twitter Profile Photo

We've begun identifying decentralized ventilation solutions for high-density spaces, such as classrooms. It's a quick and easy way to address excessive room confinement. We welcome your suggestions. Visit letsair.org/#ventilation

We've begun identifying decentralized ventilation solutions for high-density spaces, such as classrooms. It's a quick and easy way to address excessive room confinement. We welcome your suggestions. Visit letsair.org/#ventilation
LET'S AIR (@nousaerons) 's Twitter Profile Photo

An excellent introduction to decentralized mechanical ventilation has been produced by the English company Breathing Buildings in this document: breathingbuildings.com/wp-content/upl… Very clear drawings make it easy to understand the proposed solutions. Thanks to chris iddon for reporting the company.

An excellent introduction to decentralized mechanical ventilation has been produced by the English company <a href="/BreathingBuild/">Breathing Buildings</a> in this document: breathingbuildings.com/wp-content/upl…
Very clear drawings make it easy to understand the proposed solutions. Thanks to <a href="/moog77/">chris iddon</a> for reporting the company.
Salamanca City Central School District (@sccsdwarriors) 's Twitter Profile Photo

Salamanca City Central School District Awarded $50,000 National Grant to Improve Indoor Air Quality and Sustainability salamancany.org/o/sccsd/articl…

Salamanca City Central School District Awarded $50,000 National Grant to Improve Indoor Air Quality and Sustainability salamancany.org/o/sccsd/articl…
LET'S AIR (@nousaerons) 's Twitter Profile Photo

The Salamanca City Central School District - the only district in New York state - is among the 10 selected to receive $50,000 in grant funding and technical assistance to develop and implement board-approved IAQ Management and greenhouse gas emissions reduction. salamancapress.com/2025/06/23/sal…

LET'S AIR (@nousaerons) 's Twitter Profile Photo

Public health is a matter for engineers. We are continuing our inventory of decentralized mechanical ventilation solutions. It's simple, fast, and effective. There's no reason not to consider installing such a system in a daycare, a classroom, an office... letsair.org/#ventilation

Public health is a matter for engineers. We are continuing our inventory of decentralized mechanical ventilation solutions. It's simple, fast, and effective. There's no reason not to consider installing such a system in a daycare, a classroom, an office... letsair.org/#ventilation
LET'S AIR (@nousaerons) 's Twitter Profile Photo

Update of our list - non exhaustive - of airborne diseases, included in our 24-page booklet available at letsair.org/#mediation

Update of our list - non exhaustive - of airborne diseases, included in our 24-page booklet available at letsair.org/#mediation
LET'S AIR (@nousaerons) 's Twitter Profile Photo

The Open Air School located in Harrisburg, Pennsylvania opened in 1918. Medical experts viewed fresh air as a key way to prevent tuberculosis, an airborne disease. Today, mechanical ventilation with heat recovery maintains excellent thermal comfort. pennlive.com/galleries/NLZL…

The Open Air School located in Harrisburg, Pennsylvania opened in 1918. Medical experts viewed fresh air as a key way to prevent tuberculosis, an airborne disease. Today, mechanical ventilation with heat recovery maintains excellent thermal comfort.
pennlive.com/galleries/NLZL…
LET'S AIR (@nousaerons) 's Twitter Profile Photo

Airborne disease prevention is a complex system involving a multitude of stakeholders. No simple solution, whether economic or social, can be implemented on a large scale. The study of this system must be central to all public health policies and research in this field.

Airborne disease prevention is a complex system involving a multitude of stakeholders. No simple solution, whether economic or social, can be implemented on a large scale. The study of this system must be central to all public health policies and research in this field.
LET'S AIR (@nousaerons) 's Twitter Profile Photo

US School Districts Receive IAQ Funding. Organizations are looking more closely at ways the poor indoor air quality in classrooms affects schools β€” specifically, increased absenteeism, lower test scores and decreased teacher retention rates. facilitiesnet.com/iaq/tip/K-12-D…

LET'S AIR (@nousaerons) 's Twitter Profile Photo

A building is not made up of walls delimiting living spaces, but of living spaces delimited by walls. The quality of the interior environment is now the main challenge of any architectural gesture, well before any other consideration. To ignore it would be sheer folly.

A building is not made up of walls delimiting living spaces, but of living spaces delimited by walls. The quality of the interior environment is now the main challenge of any architectural gesture, well before any other consideration. To ignore it would be sheer folly.