The new in-pipe self-regulating heating system from EasyHeat provides economical, reliable in-pipe freeze protection for PE and metallic supply lines. With user-friendly plug-in installation and energy-saving thermostat control, the system is ideal for preventing ice from forming inside 3/4-inch to six-inch diameter water lines in temperatures down to -40°F (-40° C). It is CSA certified for potable and process water. A ground-fault circuit interrupter includes test and reset buttons. The system is self-regulating, automatically adjusts heat according to surrounding temperatures.