Why is my irrigation system making strange noises?

Noises usually point to pressure or air issues in the lines. Gurgling or banging often means trapped air, which is common after winterization, repairs, or startup in spring. Whistling typically signals clogged sprinkler heads that restrict flow. Chattering or hammering often comes from a failing valve that can’t open or close smoothly. In Salt Lake and Davis Counties, freeze–thaw cycles sometimes crack fittings, letting air in. First, check that the main shut-off valve is fully open. Then run each zone separately to see where the noise occurs. If the sound is isolated to one section, it may be a simple fix like cleaning or replacing a head. If it happens throughout the system, the issue may be in the main line or valves. Left unresolved, air and pressure fluctuations shorten the life of your irrigation system and waste water. A quick inspection by a landscaper can identify whether you’re dealing with a minor part swap or a deeper system issue.