HVAC – someone said it will mess up the HVAC of our building?

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    This could not be farther from the truth.

    Air cleaning is additive – not subtractive.

    For example – hospitals have excellent air cleaning.  In this preprint of a study – “A single bed hospital room equipped with an excellent ventilation rate (∼ 14 air changes per hour) can clear the aerosols in 20 minutes. However, with the addition of two air cleaners, the clearance time became 3 times faster (in 6 minutes and 30 seconds).”  Explanation of why .

    Don’t forget – the following agencies recommend portable air cleaners.

    • CDC directly recommends them: “Use portable high-efficiency particulate air (HEPA) fan/filtration systems to enhance air cleaning (especially in higher risk areas such as a nurse’s office or areas frequently inhabited by people with a higher likelihood of having COVID-19 and/or an increased risk of getting COVID-19).”
    • ASHRAE recommends them
    • EPA recommends them.

    ASHRAE is available to consult with.

    They can be emailed COVID-19@ashrae.org

    Clickable link to that email address.

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