Condenser dryers
Fell off America's radar after the 1950's or so. IIRC there was only one version offered by the 1970's or 1960's from a major manufacturer, and it was water cooled. Cannot recall who made it but our home economics lab at school had one. Teacher was upset at using it because even during water shortages she had no other choice. Wonder if the thing is still remains.
By the 1980's or 1980's you started to see small/compact combination units with condenser drying from companies like Equator, Malber, and of course then came Miele, Asko, Creda, and Bosch with their "European" sized units.
The compact 120v combo dryers from the likes of Equator or Malber were just above useless. Many here in NYC at least just used their combo machines to wash and got a small Whirlpool/Kenmore portable dryer instead.
Am not sure but *THINK* the Frigidaire unit shown above could be wired to run on either 120v or 220v power.
Still if you think modern condenser dryers heat up a room, they're nothing on those old Frigidaire units IIRC. As we've been discussing in other threads such condenser dryers are being phased out in favor of heat pump versions.
