Life in a modern metropolis brings not only moral and physical satisfaction, but often, due to the poor work of utilities, it delivers a lot of inconvenience. It is hard to imagine an urbanized person without daily use of hot water. And such a disaster happens, even in those cities where all housing and communal services cope with their duties. Once a year, planned prevention of all engineering communications is necessarily carried out, water quality is checked-this inconvenience is stretched for 3-4 weeks. Residents of high -rise buildings in the summer are especially suffering, because, as a rule, repair and preventive work is carried out in the summer.