A barn system that enables control of the environment inside a closed barn utilizes banks of fans mounted in the opposing side walls of the barn and interior circulation fans in conjunction with misters to maintain the comfort of animals confined in the barn, in particular, milk cows. The interior circulation fans are of the oscillating type that can sweep in a horizontal arc to help the circulation of the air. Movable curtains in the side walls may be raised and lowered to allow for natural ventilation of the barn when outside conditions allow. A number of exhaust fans mounted on the roof ridge line provides for exhaust of the air out the roof, as opposed to the sides as in conventional barns. The fans, misters, operable ridge vents, exhaust fans and curtains are controlled by a central monitoring and control system. A scrubber system for removing VOCs in the exhaust air may be included. The barn system may also be equipped with a system to remove VOCs from the scrubber water to recycle water back for repeated use in the scrubber system.