Faced with 16- to 22-year-old cooling equipment that required repeated compressor replacements and couldn't meet the cooling demands of its school buildings, the Humble Independent School District (ISD) in Humble, TX, suffered from repeated failures, which meant purchasing several new compressors each year. Because the equipment couldn't keep up with the demands of the hot, humid Texas climate, it translated into discomfort for the school's students and teachers.
Additionally, some of the air chilled screw chillers were generating complaints about noise. The district wanted to replace the cooling systems in eight schools (serving over 4,000 students) with equipment that was more reliable and energy efficient to provide comfortable and productive learning environments. It also sought extensive lighting retrofits.