Benefits of heat exchangers at high temperature is the material's flexibility. As tubes are heated, they grow through thermal expansion. Because the helical tube bundles are free to move, the units can undergo many high temperature operations without problem. Major drawbacks for many other types of heat exchangers are reducing the operating life when working at such extremes, or the heat exchanger must include expensive joints for expansion. A helical coil tube heat exchanger is the best choice for high temperatures.