What is winterization and why is it important?
Winterization is required in order to prevent the pipes, and other components of your irrigation system from freezing. Winterization should be performed shortly before the first winter freeze. Your irrigation system was designed to withstand one or two days of below freezing temperature, so there is a bit of latitude as to when the winterization process must be performed. Irrigation winterization is accomplished by opening the manual drain valves and forcing compressed air into the irrigation system from the backflow device and evacuating the water in the main and lateral lines.
