We offer ultra air conditioning systems to prevent stressing of the plants, formation of diseases and loss of season in high temperature climates. The purpose of this system is to provide the most effective indoor climate control. This system does not utilize overhead and side ventilation systems; the greenhouse is completely isolated from the outside air and the system involves the process of using by reintroducing to the system the air conditioned as the heat supplied inside by the cooling and heating batteries, and expelling a certain amount of the air with the overhead exhaust fans, if needed.