Goes into the

More than 70% of the cost of heat supply in winter takes to heal and condition (t. e. bring to the optimal state) air. Of course, most of this energy simply “goes into the pipe”, that is, it serves for heating the street, because due to the poor thermal insulation system (for example, the external decoration of the cottage is not good enough) heats out with warm air or due to too large thermal conductivity. To prevent this, use a special type of double -glazed windows, designed to reduce heat loss. However, there are several other ways to save heat in the house.