In much of Europe higher energy prices mean timer-controlled heating/cooling has been normal for over 50 years. Something like this [1], combined with a thermo

In much of Europe higher energy prices mean timer-controlled heating/cooling has been normal for over 50 years. Something like this [1], combined with a thermostat. A newer system can have different temperatures. I'm in a cold climate, but when my heating is "off" it's actually set to heat if the temperature falls below 8°C. (Probably it should be higher, but it's an apartment surrounded by others, so the temperature will never fall that low anyway.) These factors are probably why there's significant variation within European countries. [1] https://www.wolseley.co.uk/product/danfoss-randall-3020p-24-hour-mechanical-mini-programmer/ https://www.wolseley.co.uk/product/danfoss-randall-3020p-24-...