System and method for maintaining air temperature within a building HVAC system

A system for conditioning air within an air handling system of a building, which building has a hot water source and a cold water source, the conditioning system comprising:

• at least one heating-cooling unit connected to the air handling system, which at least one heating-cooling unit is operable to transfer heat into or out of air passing within the air handling system of the building, and which at least one heating-cooling unit includes at least one chilled beam;
• a primary water storage device operable to store a volume of water within a predetermined temperature range, which primary water storage device is in communication with the hot water source and the cold water source;
• at least one first heat pump connected to the primary water storage device and the at least one chilled beam of the at least one heating-cooling unit;
• and
• a controller adapted to selectively drive the first heat pump to transfer heat between the primary water storage device and the chilled beam of the at least one heating-cooling unit, and adapted to selectively control the system to transfer heat into or out of the primary water storage device to maintain the water within the primary storage device within the predetermined temperature range, and adapted to operate a second heat pump to transfer heat from the hot water source to the primary storage device to increase the temperature of water disposed within the primary water storage device.