PROBLEM TO BE SOLVED: To provide a greenhouses environmental control apparatus which has desired features for cost reduction as well as for effective use of a conventional equipment (e.g., a heater), and which is to be an alternative of a conventional photosynthesis accelerator (CO2 generator) that is small, efficient, and has been appreciated for introducing CO2 in a greenhouse.SOLUTION: In view of the above, the present invention provides a greenhouse environmental control apparatus (an apparatus that utilizes CO2 in the outside air and can avoid a decrease in temperature inside the house) with a remodeled heater for maximum use thereof. In addition, the use of the environmental control apparatus according to the present invention is determined in consideration of a greenhouse (plant) and/or an outside air environment, etc.SELECTED DRAWING: Figure 6
