Utah's freezing winters are hard on irrigation systems. Water left in your lines can freeze, expand, and crack pipes, valves, and backflow devices — turning a free fall chore into an expensive spring repair. Here's what every Utah County homeowner should know.
Why winterizing matters in Utah
Along the Wasatch Front, ground temperatures drop well below freezing. Any water trapped in your sprinkler lines, valves, or backflow preventer can freeze solid. Because water expands as it freezes, it can split PVC pipe and crack valve bodies — damage you won't discover until you turn the system on in spring.
The "blow out" method
The reliable way to winterize a Utah sprinkler system is an air "blow out," which pushes water out of every zone with compressed air. In brief, the process is:
- Shut off the irrigation water supply.
- Connect an appropriately sized air compressor to the system.
- Blow out each zone one at a time, at safe pressure, until no water remains.
- Protect the backflow preventer and any above-ground components.
Why not just drain it?
Manual and auto-drain methods often leave water trapped in low spots, valves, and heads. A proper blow out clears the whole system, which is why it's the standard across Utah County.
A caution on pressure
Too much air pressure can damage heads, seals, and pipes just as badly as ice. Using the correct pressure for your system matters — which is why many homeowners have it done professionally.
When to winterize
Aim to winterize before the first hard freeze — typically mid-to-late fall in Utah County. It's inexpensive insurance against cracked lines and a much bigger spring repair bill.
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