This paper investigates the possibility of finding normative solutions in the process of mathematical modeling of systems of a heat supply (STS). Theorems are formulated and conditions for the reachability of the stationary and regulatory regimes of Autonomous and centralized heat supply systems. Formulated search order normative solutions STS.
Keywords: stationary regime, regulatory regime, system of linear ordinary differential equations, controlling the heat supply, equivalenting of systems of a heat supply, control of the source of thermal energy