For example, you need to lay a heating main into the building. And in winter it is cold. Therefore, heat losses are inevitable. So, people who are unknown will lay pipes, as it turns out. But the professionals will make sure that the pipe has a pupa. What is it? Simply speaking, this is a protective casing, the same form as a pipe, the purpose of which is a decrease in heat loss levels. Yes, installation with these bards becomes longer and more complicated. But at the same time, heat to apartments is delivered more with the same energy costs. In general, it is worth appreciating someone else’s work, even if we do not see it…