High-end refrigerators often have adjustable-temperature compartments, which allow users to having different cooling zones within the refrigerator, and shelves that are easy to adjust. Nearly all high-end refrigerators also have built-in water and ice dispersers.
One of the benefits of high-end refrigerators is their operating costs. Insulation is relatively expensive, so many brands market products based on their efficiency. Newer refrigerators are far more efficient than those used in the past, but ENERGY STAR-certified refrigerators offer approximately 10 percent better efficiency. This efficiency is partially due to the better metals used for various components, which increases the manufacturing price significantly for relatively minor efficiency improvements.