until now it hadn't occurred to me that in addition to recycling air, heating systems dry air, so pathogens remain airborne longer
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idk how much moisture is produced per unit, but if it's drawing (cold) air from outside then that air is more dry than inside
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It is known
End of conversation
New conversation -
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No, the exhaust is run through a heat exchanger then vented to avoid CO2 and carbon monoxide in your air.
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