Aquarius Convertible Water Cooler provides water either with a 5-gallon bottle or by connecting directly to a water line. It also delivers hot, cold, and room temperature water on demand through either source. Added benefit of bottom loading for those who choose bottled water, eliminating the need to hoist heavy bottles. Convection-cooled condenser and spring-mounted, hermetically sealed compressor require no lubrication. Refrigerant is controlled by a capillary tube, and temperature is controlled by a preset thermostat for maximum performance.