Sprinkler System Winterization in Chicagoland

Protect Your Irrigation Investment from Illinois Freeze Damage

When temperatures drop below freezing, water left in your sprinkler system pipes, valves, and heads can freeze and expand, causing costly damage. American National Sprinkler & Lighting provides professional sprinkler winterization services throughout the Chicagoland area, protecting your irrigation investment and ensuring your system is ready to perform when spring arrives.

Illinois winters are harsh, with temperatures regularly dropping well below zero. Without proper winterization, you risk cracked pipes, broken valves, damaged backflow preventers, and split sprinkler heads. Repair costs from freeze damage can easily reach $500 to $2,000 or more. Professional winterization typically costs a fraction of that and takes less than an hour.

Schedule Your Winterization Before the First Freeze

Our Sprinkler Winterization Process

Step 1: System Shutdown

We begin by shutting off the water supply to your irrigation system at the main valve. This prevents any additional water from entering the system during the blowout process. We also disconnect any smart controllers from active watering schedules to prevent them from attempting to run cycles during winter.

Step 2: Compressed Air Blowout

Using professional-grade air compressors, we blow compressed air through every zone of your sprinkler system. This forces all remaining water out of the pipes, valves, and sprinkler heads. We carefully control the air pressure (typically 50 to 80 PSI depending on your pipe material) to avoid damaging components while ensuring complete water removal.

Step 3: Zone-by-Zone Clearing

Each zone is blown out individually to ensure complete water evacuation. We run the compressor through each zone until no more water mist is visible from the sprinkler heads. This thorough approach ensures no trapped water remains in any part of your system.

Step 4: Backflow Preventer Protection

Your backflow prevention device is one of the most expensive components of your irrigation system. We drain and protect the backflow preventer, opening test cocks and removing any standing water. For above-ground backflow preventers, we recommend insulated covers for additional freeze protection.

Step 5: Controller Programming

We set your irrigation controller to rain mode or off position for the winter. Smart controllers like Hunter Hydrawise are configured to suspend all watering schedules while maintaining your programming for spring reactivation.

When Should You Winterize Your Sprinkler System in Illinois?

The ideal time to winterize your sprinkler system in the Chicagoland area is mid-October through mid-November, before the first hard freeze. While the exact timing varies year to year, you should schedule your winterization when overnight temperatures begin consistently dropping below 37 degrees Fahrenheit.

Do not wait until the ground freezes. Once temperatures drop below 32 degrees, water in your pipes is already at risk. We recommend scheduling your winterization appointment early in the season to ensure availability, as this is our busiest time of year.

What Happens If You Do Not Winterize Your Sprinkler System?

• Cracked pipes — Frozen water expands and can crack PVC or polyethylene pipes underground, requiring expensive excavation and repair
• Broken sprinkler heads — Water trapped in heads freezes and splits the housing, requiring replacement of multiple heads
• Damaged valves — Zone valves can crack or lose their seal when water freezes inside them
• Backflow preventer failure — The most expensive component to replace, often costing $200 to $500 for parts alone
• Spring startup delays — Freeze damage often is not discovered until spring, delaying your system activation by weeks while repairs are completed

Sprinkler Winterization Service Areas

American National provides sprinkler winterization services throughout the Chicagoland area, including Highland Park, Northbrook, Lake Forest, Glenview, Wilmette, Winnetka, Deerfield, Libertyville, Buffalo Grove, Vernon Hills, Barrington, Arlington Heights, Lake Zurich, Evanston, Skokie, Schaumburg, Palatine, and all surrounding communities in Lake and Cook Counties.

Frequently Asked Questions About Sprinkler Winterization

How much does sprinkler winterization cost?

Professional sprinkler winterization in the Chicagoland area typically costs between $75 and $150 depending on the number of zones in your system. This is a small investment compared to the hundreds or thousands of dollars in freeze damage repairs you could face without winterization.

Can I winterize my sprinkler system myself?

While it is technically possible, we strongly recommend professional winterization. The compressed air blowout requires specialized equipment and knowledge of proper pressure settings. Too much pressure can damage components, while too little leaves water in the system. Professional service ensures complete protection.

How long does winterization take?

A typical residential sprinkler winterization takes 30 to 60 minutes depending on the number of zones. We work efficiently while being thorough to ensure every zone is completely cleared of water.

Do I need to be home for the winterization?

We prefer that someone is home so we can access the main water shut-off valve (if it is inside) and answer any questions. However, if you provide access instructions and your system has an exterior shut-off, we can often complete the service without you being present.

Ready to protect your sprinkler system this winter? Call American National at (847) 566-0099 or request a quote online. We will get your winterization scheduled before the freeze hits.