According to the present invention an HVAC system is provided. The HVAC system includes a heat exchanger containing a cooling fluid to be circulated, a blower assembly configured to generate an inlet air stream through said heat exchanger, and a kinetic energy storage device. The blower assembly is powered by an external electrical power supply. The kinetic energy storage device is configured to provide auxiliary power to the blower assembly in the event of an interruption of the external electrical power supply.