Sprinkler System Winterization in Chicago & the North Shore

Protect Your Irrigation Investment from Illinois Freeze Damage

When temperatures drop below freezing, water left inside your sprinkler system can freeze, expand, and crack pipes, valves, and sprinkler heads — leading to thousands of dollars in repair costs. American National Sprinkler & Lighting provides professional sprinkler winterization (also called “blowout” service) to protect your irrigation system throughout the harsh Illinois winter.

Our certified technicians use high-powered compressed air to force every drop of water out of your sprinkler lines, valves, and heads — ensuring nothing is left to freeze. This is the single most important maintenance step you can take to protect your sprinkler system investment.

Schedule Your Winterization Before the First Freeze

What Our Winterization Service Includes

Complete Compressed-Air Blowout

We use commercial-grade air compressors to push all remaining water out of every zone in your sprinkler system. Unlike homeowner-grade compressors, our equipment delivers the volume and pressure needed to fully clear even the longest pipe runs and lowest points in your system.

Zone-by-Zone Inspection

As we blow out each zone, our technicians visually inspect every sprinkler head for damage, misalignment, or wear. We document any issues so you can address them before spring startup, saving you time and money when the season begins.

Backflow Preventer Protection

Your backflow prevention device is one of the most expensive components in your irrigation system. We drain and protect it from freeze damage, including insulating exposed components when necessary.

Controller Shutdown

We properly shut down your irrigation controller, setting it to the correct off-season mode that preserves your programming while preventing any accidental watering during winter months. For smart controllers like Hunter Hydrawise, we configure the seasonal adjustment to prevent automatic operation.

Main Valve Shut-Off

We locate and close your main irrigation shut-off valve and drain any water between the shut-off and the backflow preventer — a step many homeowners miss that can lead to costly pipe bursts.

When to Winterize Your Sprinkler System

In the Chicagoland area, we recommend scheduling your winterization between late September and mid-November, before the first hard freeze. The ideal time depends on the season, but you should never wait until temperatures are consistently below freezing — by then, damage may have already occurred.

Our winterization season books up fast, especially in October. We recommend scheduling early to secure your preferred date.

Why Professional Winterization Matters

• Prevent pipe bursts — Frozen water expands with enormous force, cracking PVC and poly pipes underground
• Protect valves — Zone valves and the backflow preventer are expensive to replace if damaged by ice
• Save money — A $75-150 winterization prevents $500-3,000+ in spring repair bills
• Extend system life — Properly winterized systems last significantly longer than neglected ones
• Maintain warranty — Many manufacturers require annual winterization to maintain equipment warranties

DIY vs Professional Winterization

While some homeowners attempt to winterize their own sprinkler systems, professional service is strongly recommended. Homeowner-grade air compressors typically lack the volume (CFM) needed to fully clear all zones. Incomplete blowouts leave water in low points and long runs, which is where most freeze damage occurs. Our commercial compressors deliver the airflow needed to protect even the largest residential systems.

Serving the Entire Chicagoland Area

American National provides sprinkler winterization throughout Lake County, Cook County, McHenry County, and the North Shore — including Highland Park, Northbrook, Lake Forest, Glenview, Barrington, Libertyville, Deerfield, Buffalo Grove, Vernon Hills, and all surrounding communities.

Ready to protect your sprinkler system? Call us at (847) 566-0099 or schedule your winterization online.