Abstract: An HVAC system used in a growing room to grow plants, including lighting and other heat producing pieces of equipment, wherein operating parameters are modified over time in response to and anticipation of changes in heat production by the lighting and other heat-producing pieces of equipment and moisture production from the plants and plant growing systems located in or near the growing room. The operating parameters of the system are modified during the growth cycle of the plants to provide environmental conditions appropriate to each phase of the plant growth. Additionally, the system comprises components carrying a load such that energy use can be reduced during times when less than maximum load is required. Algorithms and tables to control airflow, heating, cooling, dehumidification, and chemical composition of the air are included to maximize plant growth. CO2 and other byproducts of heating, cooling, and cogeneration are recycled for use in connection with plant growth.

Abstract: An LED lighting system for use in an indoor growing system. The lighting system includes a lighting tray having a tube containing a printed circuit board therein. The circuit board has blue and red LED lights. The LEDs draw power and at least one of the LEDs draws power of less than 1 Watts and may draw less than ½ Watt. The dispersion angle of the LEDs is less than 40° degrees and may be less than 30° degrees. The heat-sinking capabilities of a standard circuit board are sufficient without special metalized layers or external heat sinks. Additionally, conversion to low voltage power is achieved remotely in an area away from the lights. In the lighting system, the ratio of red to blue LEDs is 15-24% red to 76-85% blue.