The main purpose of the paper is to develop structure sheme of HVAC intelligent control system and to describe its working algorithm, as well as to define the optimal HVAC system working regime, taking into account priorities of consumers, and trying to reduce consumption of electric energy as much as possible min. and at the same time providing high level of comfort to passengers max. Deep and detailed investigation of the behaviour of such a system, its operation and running processes requires its generalized mathematic modelling, taking into account all possible regimes of the operation of compressor, fan motors, heater and setting an algorithm of their control under any condition. Possible problem solution is intelligent coordination mechanism – intelligent control system with the fuzzy logic controller. In order to check this choice it is necessary to build Simulink model of HVAC system control with fuzzy logic controller (FLC) support.