Fall Winterization

Professional fall irrigation winterization in Seattle protects your system investment from damage during our wet, occasionally freezing winter months—because even though we don't get the hard freezes that other regions experience, water sitting in pipes and valves all winter still causes problems that show up as expensive repairs come spring. Our fall winterization service in October follows a systematic shutdown process: we drain all water from the irrigation lines using compressed air to blow out each zone completely, shut down and protect the backflow preventer which is vulnerable to freeze damage even in mild winters, turn off the main water supply to prevent accidental activation during winter storms, set the controller to "off" or "rain mode" so the system doesn't try to run during our nine-month rainy season, inspect all above-ground components for damage that should be repaired before spring, and document any issues we find so you know exactly what needs attention when we reactivate the system in April.

This matters in King County because water left in irrigation lines expands when temperatures drop below freezing—which happens several times each winter even in Seattle—and that expansion cracks pipes, splits valve bodies, and damages sprinkler heads from the inside where you can't see the problem until water starts spraying everywhere next spring. The benefit of professional irrigation winterization services is that we remove all the water from your system using proper blow-out equipment rather than just draining valves and hoping for the best, we shut everything down in the correct sequence to avoid damaging sensitive components, and we catch potential problems during the scheduled appointment instead of discovering burst pipes when you're trying to reactivate the system six months later. Proper fall winterization also means your irrigation isn't wasting water by running during rainstorms all winter, and your system is protected and ready for quick reactivation when Seattle's dry season actually arrives—because professional sprinkler winterization in Seattle prevents the freeze damage that costs homeowners hundreds or thousands in emergency repairs every spring.