How to keep warm in Kazakhstan in winter?

Hello, Kazakhstan, some cities have natural gas. Ordinary residents can buy that kind of small natural gas boiler at home, because most of their homes are bungalows, but the area is relatively large. Their houses are usually three floors, with bricks outside, insulation materials in the middle and wood materials inside. The ground is also paved with wooden floors, and the roof design is spire, which has good insulation effect. The price of natural gas they use is about 50 cents.