In Australia, the state of Victoria in particular, most houses are not heated outside of the 'lounge room' which is not itself generally heated overnight. In th

In Australia, the state of Victoria in particular, most houses are not heated outside of the 'lounge room' which is not itself generally heated overnight. In the winter months it routinely gets down to or below 0C. Energy is expensive and many houses are not sealed properly. As such, Australians tend to wear more clothing indoors during the winter months, including hats and sometimes even gloves. Electric blankets and hot water bottles tend to be used in bedrooms. Doors between rooms are kept closed, and only rooms that have people in them are heated, and only while people are in them. So yes, if people in the EU were willing to accept living like this in the winter, they could save a lot of energy. Similarly, in the summer, most Australian houses only cool a single room, and even at that set the AC to around 27 degrees. If people in the EU lived like Australians, they could most likely survive without Russian gas.