“Our ‘dehumidifier’ back then was a pan of water on top of the radiator.”
That is a humidifier.
LOL! In post 13 you correct 11 on humidifier vs dehumidifier, yet in post 12 you incorrectly say that plants emit CO2 (hint, they take in CO2 and emit O2 LOL).
Sorry, I read it wrong; probably because I don’t know why a ‘de’-humidifier would be needed with radiators.
They don’t build apartment buildings like that anymore; really big rooms, windows on three sides, so plenty of cross ventilation; we were almost never too hot in summer (despite no AC in those days) or cold in winter.
Lol. Science is hard 😉