An energy efficient system for a grow cabinet that maintains optimum growing conditions by reducing the heat contribution of the lighting and distributing air throughout the cabinet to maintain a set temperature uniformly. The system, using a LED lighting module with a reflective light guide plate, provides cool light uniformly to a plurality of plants in the grow cabinet, thereby reducing the amount of cooling required inside to maintain temperature. The lighting module is separate from the growing area, minimizing heat transfer to a grow chamber within the grow cabinet. The system advantageously dissipates heat through a plurality of metal components and beneficial air flow throughout the lighting module and growing chamber. The grow cabinet in the system provides precision control of the light and temperature while having a small footprint and low vertical clearance.
