Read on Twitter
SCHOOLS. With winter approaching, increasing *filtration* can help if you find yourself having a hard time increasing *ventilation*.
a THREAD with tips and solutions
a THREAD with tips and solutions
Set a target of 4-6 air changes per hour.
This can be achieved through ANY combination of ventilation + filtration.
2/
This can be achieved through ANY combination of ventilation + filtration.
2/
To figure out how much ventilation you're classroom is getting, use our 5-step guide. https://schools.forhealth.org/ventilation-guide/
You can measure ventilation with a balometer or....
...or using CO2 meters.
(it's all explained in our guide, with some examples that we walk through step-by-step)
(it's all explained in our guide, with some examples that we walk through step-by-step)
In addition to the *outdoor air* ventilation, the recirculated air can count towards your total 'clean' air *IF* it is running through MERV13 filters.
Example 1 at the back of our report explains how to account for this
Example 1 at the back of our report explains how to account for this
If you don't have a mechanical system for ventilation, opening your windows *even a few inches* can help.
Fauci agrees
https://twitter.com/j_g_allen/status/1306911087602917376?s=20
Fauci agrees
https://twitter.com/j_g_allen/status/1306911087602917376?s=20
If these approaches are not working for your school, there is another way.
--> Use portable air cleaners with HEPA filters.
@CorsIAQ and I wrote more about them here: https://www.washingtonpost.com/opinions/2020/07/27/we-can-must-reopen-schools-heres-how/
--> Use portable air cleaners with HEPA filters.
@CorsIAQ and I wrote more about them here: https://www.washingtonpost.com/opinions/2020/07/27/we-can-must-reopen-schools-heres-how/
Not sure how to pick a portable air cleaner that is sized correctly for your classroom?
We built a simple calculator to help make this easier
(w/ @ShellyMBoulder + @cedenolaurent) https://tinyurl.com/portableaircleanertool
We built a simple calculator to help make this easier
(w/ @ShellyMBoulder + @cedenolaurent) https://tinyurl.com/portableaircleanertool
Healthy Building strategies like better ventilation and filtration will help, but they are not the only strategies you need.
#SchoolSMART
S--> Stay home when sick
M--> Mask up
A--> Air purifier in every room
R--> Refresh indoor air
T--> Temporary classrooms
#SchoolSMART
S--> Stay home when sick
M--> Mask up
A--> Air purifier in every room
R--> Refresh indoor air
T--> Temporary classrooms
All of the schools resources from our Harvard Healthy Buildings program can be found here: https://schools.forhealth.org/
