One of the priorities of energy savings is to implement energy saving measures in the work of heating systems, heating, ventilation and air conditioning systems based on heat pumps (HP). The dissertation considers using of a multizone central air-conditioning system with chilled beams for increase of power efficiency of a building was offered. In a transition period (the spring, autumn) in a building are observed both surplus of heat in one premises, and shortage of heat in others. At the expense of use low-temperature circuit and chilled beams of type "water-air" surpluses of heat are transferred in premises with shortages of heat and on the contrary. The given technology allows saving essentially thermal and electric energy in a transition period of year.