Symphony Diet Air Coolers - where performance, style and intelligence get together. Designed to be discrete, this range of mobile slimline air coolers, quietly packs a mighty punch and comes with a digital control panel and remote control. Symphony Diet operates quietly, is energy efficent with a low power consumption and can be used both indoors and out. A perfect solution for greenhouses, large patios, theme parks, warehouses and large homes. Evaporative coolers create cool, damp air.