How to realize the lowest cost heating at home in winter?

Heating costs have always accounted for a large proportion of winter consumption of northerners. Because the heating cost in some areas is too expensive, many people are unwilling to pay the heating cost. I don't turn on the heating, so I use the air conditioner. In fact, air conditioners also consume a lot of electricity.

If it is south of Huaihe River, there is no heating fee. But it's really cold there in winter! Cold? _? ! If you want to keep warm, if the area is not really cold, then a small sun or electric air is enough for one or two people. If the bedroom is small, one or two air conditioners can be installed, which is enough. It won't last long anyway, especially in the south.

But in Inner Mongolia and the three northeastern provinces, the heating fee has to be paid! After all, I don't want to light a stove to burn charcoal to keep warm now. One is the environmental pollution caused by burning charcoal in the stove, and the other is the danger of carbon monoxide poisoning. Moreover, it is tens of degrees below zero in winter in Northeast China, so heating is still very important.