Thank you SeaBreeze. That's an interesting video. It strikes me as odd that they seem to have skipped over the Franklin stove. These were invented in the mid-1700s and were popular well into the 1900s. My great grandparents had a big old black one as their main source of heat until they passed in the 1950s. In fact, functional/decorative 21st century descendants of the Franklin stove are still very popular today.
Our family used hot water bottles, albeit made of rubber, to pre-warm our beds all the while I was growing up. They're still available. Closing off rooms? Up until four years ago, our home had baseboard electric heat, so each room had it's own thermostat. We routinely turned down the thermostat and closed the door when we left a room. Putting on heavier clothing on cold weather? Yup, I do that.
Modern HVAC is great, but it we cetainly haven't forgotten of the lessons of the past.
:winter1:
(It still amazes me that many in cold climates who "claim" to be "green" eschew heavy curtains and carpets in their homes in deference to "fashion".)