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

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		LorenPechtel 11 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 11 months ago [–]

Why is opening the window expensive? Climate control?

willlma 11 months ago | [–]

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

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