Hotel minibars are refrigerators for storing and displaying small snacks, primarily beverages, available to guests directly in the hotel room. A very important factor when choosing a minibar is noise level. Compressor cooling for hotel minibars is not very suitable due to its operational noise. A more suitable cooling system for minibars is absorption or semiconductor. Available models include glass-fronted minibars, those with solid doors, or models with solid doors and optional color. Built-in minibars can also be supplied.