HYBRID AIR HANDLER

An improved system, apparatus, method for air ventilation having a hybrid air handler system comprising (1) a hydronic air handler fluidly coupled to and functionally integrated with a direct expansion of a heat pump; (2) a pre-water coil refrigerant to air heat exchanger and a post water coil refrigerant to air heat exchanger fluidly coupled to and functionally integrated with the hydronic air handler; and (3) a reversable or straight cool/heat and direct-expansion water-source heat pump fluidly coupled from load loop side water of the hydronic air handler and functionally integrated with the hydronic air handler. The hybrid air handler system disclosed herein is configured to provide enhanced system efficiency and reliability by simultaneously increasing its cooling capacity and lowering the dew point for dehumidification while eliminating the carbon footprint or the need for electric-resistant heat for any reheating of a building heating and cooling system.