How old is your building? New construction is so weather sealed and lacks fresh ... | Hacker News

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		adrr on Aug 3, 2020 \| parent \| context \| favorite \| on: Why aren’t we talking more about airborne transmis... How old is your building? New construction is so weather sealed and lacks fresh air leaks to meet air quality standards. Pretty sure whatever standard to get a green rating on a building requires outside air to be mixed in and due to efficiency requirements there has to be heat exchanger.

j_walter on Aug 3, 2020 [–]

25 years...but we also have the ability to open outside dampers on our return air chases to output all air if needed.

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