You realize a lot of us live in places where that would be very expensive? Not t... | Hacker News

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		LorenPechtel 4 months ago \| parent \| context \| favorite \| on: Installing air filters in classrooms has surprisin... You realize a lot of us live in places where that would be very expensive? Not to mention that the HVAC plants are usually not sized with that in mind.

socksy 4 months ago [–]

Why is opening the window expensive? Climate control?

willlma 4 months ago | [–]

Yep, it's cold outside. So there's a CO2, energy, comfort (choose two) tradeoff.

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