What Is a Spring Irrigation Turn-On (and Why It Matters in Flagstaff)

As winter starts to fade in Flagstaff, many homeowners begin thinking about getting their irrigation systems back up and running.

But after months of freezing temperatures, your system isn’t quite ready to just be turned on and forgotten.

That’s where a Spring Irrigation Turn-On comes in.

If you’ve ever wondered what that actually includes—or whether it’s something you can handle yourself—this guide will walk you through it.

💧 WHAT IS A SPRING IRRIGATION TURN-ON?

A spring irrigation turn-on (sometimes called a system start-up or recharge) is the process of safely bringing your irrigation system back online after it has been winterized.

It’s not just flipping a switch—it’s a step-by-step process that ensures your system is functioning properly after months of inactivity and exposure to winter conditions.

⚠️ WHY YOU CAN’T JUST “TURN IT BACK ON”

After a Flagstaff winter, your irrigation system has gone through:

• Freezing temperatures

• Expansion and contraction of materials

• Months of inactivity

Turning the system on without inspection can lead to:

• Burst pipes

• Leaks you don’t immediately see

• Damaged valves or fittings

👉 Many of these issues can turn into bigger (and more expensive) problems if they go unnoticed.

🛠️ WHAT’S INCLUDED IN A PROFESSIONAL TURN-ON

A proper spring turn-on typically includes:

• Recharging the backflow device to safely bring the system back online

• Inspecting the backflow device for any signs of damage from winter conditions

• Checking valves and system components to ensure everything is functioning properly

• Running each irrigation zone to identify leaks, clogs, or broken emitters

• Adjusting sprinkler heads and drip lines for proper coverage

• Setting or adjusting your controller based on current weather and watering guidelines

👉 It’s part system check, part tune-up, and part prevention—focused on making sure everything is working properly after months of inactivity.

In Flagstaff, where winter conditions can be hard on irrigation systems, this step-by-step approach helps catch small issues before they turn into bigger problems.

🌲 WHY THIS MATTERS IN FLAGSTAFF

In Northern Arizona, irrigation systems face a unique combination of:

• High elevation

• Long winters

• Sudden temperature swings

It’s also common for us to get:

• Warm days followed by freezing nights

• Late-season cold snaps—even after systems are turned on

👉 That’s why having a professional take a careful, thorough approach is especially important in our area.

🔁 HOW THIS CONNECTS TO BACKFLOW PROTECTION

If you read our recent blog on backflow insulation blankets, this is where everything ties together.

Spring is actually one of the highest-risk times for backflow damage because:

• Systems are being turned on

• Nighttime temperatures can still dip below freezing

👉 This is one of the reasons we recommend keeping your backflow insulated—even during the early irrigation season.

👷 WHY WORK WITH A PROFESSIONAL?

While it’s possible to turn your system on yourself, working with a professional helps ensure:

• Nothing gets overlooked

• Small issues are caught early

• Your system is set up efficiently for the season

• You avoid costly repairs down the line

It also gives you a clear starting point for the rest of your irrigation season.

🌱 FINAL THOUGHTS

A spring irrigation turn-on is one of the simplest ways to protect your investment and start the season off right.

Taking the time to do it properly—or having it done professionally—can make all the difference in how your system performs throughout the year.

👉 If you’re getting ready to turn your system on and want to make sure everything is in good shape, we’re always happy to help.

You can also get on our Seasonal Irrigation List to stay ahead of spring start-ups, fall winterizations, and everything in between.