The YORK YMAE Air-Cooled Inverter Scroll Modular Heat Pump is designed to boost the environmental performance of offices and schools while reducing energy costs and driving performance. The unit is based on the Amichi platform and features electronic vapor injection (EVI) scroll compressors. Its EVI compressors significantly improve system capacity and efficiency and provide high-water temperatures at low ambient conditions, while its two- and four-pipe options increase application flexibility.