Shutting Down Isn’t Enough: What True Sprinkler Winterization Looks Like

As temperatures start to dip in Utah, you might think your sprinkler system is no longer in use and can be left alone until spring. But assuming it’s “off” doesn’t mean it’s protected. Winterization is not just about turning off the controller—it’s a multi-step process that prevents costly damage when temperatures drop below freezing.

Failing to shut down your system the right way can lead to split pipes, broken valves, and flooded landscapes come spring. October is the ideal time to take action while the ground is still workable and before deep freezes set in.

What Winterization Actually Involves

Proper sprinkler winterization goes far beyond flipping a switch. A professional shut-down includes multiple technical steps that safeguard your system components all winter long:

• Blowing out water from every irrigation line using a commercial-grade air compressor
• Draining backflow preventers and ensuring valves are cleared of residual moisture
• Testing system pressure and identifying low spots where water may pool and freeze
• Inspecting each zone’s shut-off to confirm complete deactivation
• Verifying that automatic drains are working or manually draining systems without them

Even a small amount of water left inside the pipes can expand and rupture components. DIY solutions often rely on inadequate air pressure or skip sections entirely, leaving your system vulnerable to hidden ice damage.

Why October Is the Best Time in Utah

By late October, many parts of Utah are already approaching freezing temperatures. Waiting any longer risks exposing your system to early-season damage. Once the ground begins to harden, moisture in your irrigation lines and valves has less room to expand—and more chance to cause structural failure.

October provides the perfect conditions to complete a full winterization service. Technicians can still access your valve boxes without frozen soil, and your system likely hasn’t seen enough snowmelt or precipitation to complicate drainage. You’re also more likely to secure an appointment before the seasonal rush fills every service slot.

What Can Happen Without Proper Shutdown

It doesn’t take a full winter to create damage. One cold night is enough. Here’s what can happen if water remains in your system:

• Lateral lines and poly tubing can burst underground, often without immediate signs
• Sprinkler heads can crack at the base, causing uneven spray or pooling in spring
• Manifolds and valves may split from expanding ice, requiring costly replacements
• Backflow preventers may fail, putting your water supply at risk of contamination

These issues often go unnoticed until your system is reactivated in spring—at which point repairs become urgent and more expensive.

Protect Your System the Right Way

Bonneville Sprinkling provides professional sprinkler winterization services designed specifically for Utah’s climate. Our trained technicians use commercial air systems and proven methods to safely evacuate water from every zone. Don’t rely on a timer shutoff or partial drain to get you through the cold months.

Schedule your winterization appointment now to avoid springtime repairs and extend the life of your system. Bonneville Sprinkling ensures your irrigation system is not just off—but fully protected for the season.