The Phytotron is equipped with it's own dedicated mechanical room which provides heating, cooling and air handling to the facility. The growth chamber area is supplied with filtered air under positive pressure maintained at 20 degrees Celsius and 50% relative humidity, the ambient conditions under which the controlled environment equipment functions most reliably. A cooling tower provides chilled water to the facility's refrigeration systems. The greenhouse is heated by hot water converted from steam generated by the university's central power plant. All major mechanical systems are maintained by the Department of Facilities Management in collaboration with the Phytotron support staff.