Why You Should Winterize Your Sprinkler System Before Colorado’s First Freeze

Colorado fall weather can be deceptive. One week can bring warm, sunny afternoons, and the next can bring overnight temperatures below freezing.

For homeowners in Denver and Aurora, that means sprinkler systems can easily become one of those maintenance items that gets forgotten until it's too late.

Winterizing your sprinkler system before freezing temperatures arrive helps protect pipes, valves, backflow components, and other irrigation equipment from freeze damage. More importantly, it can help prevent a relatively simple seasonal maintenance task from turning into a repair project next spring.

Why Freezing Temperatures Can Damage Sprinkler Systems

When water freezes, it expands.

If water is trapped inside sprinkler lines or components when temperatures drop far enough, that expansion can put pressure on the system. Plastic fittings can crack, pipes can split, and valves or other components can become damaged.

The frustrating part is that you might not immediately know anything happened.

Some freeze damage isn't discovered until the irrigation system is turned back on in the spring. That's when homeowners may find leaks, broken sprinkler heads, damaged valves, or water appearing where it shouldn't.

Your Backflow Preventer Needs Attention Too

The underground sprinkler lines aren't the only parts of the system exposed to cold weather.

Backflow prevention assemblies and other above-ground components can be particularly vulnerable because they're directly exposed to outside temperatures.

These components should be properly prepared as part of the winterization process rather than assuming shutting off the sprinkler controller is enough.

Simply turning the system off doesn't remove the water that's still inside it.

When Should Denver Homeowners Winterize Their Sprinklers?

There's no perfect calendar date because Colorado weather doesn't follow one.

Generally, you want the sprinkler system winterized before sustained freezing temperatures arrive, but after your lawn no longer needs regular irrigation for the season.

For many Denver-area homeowners, that makes late September through October an important window to watch the forecast and get the job scheduled.

Waiting for the first major freeze can turn winterization into a race against the weather.

What Does Sprinkler Winterization Involve?

The basic goal is to shut down the irrigation water supply and remove enough water from vulnerable portions of the system to protect it from freezing.

Many systems are winterized using compressed air to clear water from irrigation zones. However, the exact procedure depends on how the system was installed and the equipment it uses.

Using excessive air pressure or improperly operating valves can damage irrigation components, so this isn't a situation where more pressure necessarily means a better blowout.

The system should be handled according to its design and components.

Don't Forget Your Garden Hoses and Exterior Faucets

While you're preparing the sprinkler system, take a few extra minutes to check the other outdoor water sources around your house.

Disconnect garden hoses from exterior faucets and drain them before storing them for winter.

A hose left attached can trap water where you don't want it and potentially contribute to freeze damage.

If your home has shutoff valves for exterior faucets or other winterization features, make sure you understand how they're intended to be used.

This is also a good time to inspect exterior faucets for leaks or damage rather than discovering a problem during freezing weather.

Winterization Is Preventative Maintenance

Sprinkler winterization isn't particularly exciting—and that's exactly the point.

Good preventative maintenance often means spending a little time addressing something before there's a visible problem.

A sprinkler system that survives winter without damage won't give you much to think about. You simply turn it back on in the spring and move on.

A system that wasn't properly prepared can be a very different story.

Add It to Your Fall Home Maintenance List

Sprinkler winterization should be one part of your larger fall maintenance routine.

While you're preparing the irrigation system, it's worth checking your gutters, exterior paint and wood, doors and windows, fences, exterior stairs, railings, and other areas that will soon be dealing with Colorado winter weather.

If you haven't already, check out our Fall Home Maintenance Checklist for Denver Homeowners for a complete walkthrough of what to inspect before the first freeze.

Getting these projects handled in September and October means fewer things to worry about when the first snowstorm arrives.

Need Help Getting Your Home Ready for Winter?

The Handy Dads helps homeowners throughout Denver and Aurora with sprinkler shutdown and winterization, exterior repairs, gutter maintenance, doors, fences, and the other small projects that tend to pile up before winter.

Instead of waiting until freezing temperatures expose a problem, take care of your fall maintenance while the weather is still cooperating.

One Visit. One List. Done.

Book now at thehandydadsco.com or call 833-72-HANDY.