How to Winterize a Sprinkler System
Corneliu Fabian and one other contributor
Last updated on Aug 12, 2026
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Introduction
Go to step 1 ↓Winter is around the corner, which means that it’s getting cold outside, putting your sprinkler system lines to risk of freezing. When water freezes, it expands. This hydro-expansion can cause fittings, sprinklers, valves, pumps, pipes and other parts of irrigation systems to burst and break. Draining your system of all water is the only way to ensure that it will still be in working order when spring arrives. Luckily, there’s a way that you can take care of that and blow the water out of the system so it doesn’t freeze. This is an easy and fast guide showing you exactly what to do to get your sprinkler system ready for the winter.
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Shut the water supply off to the irrigation system. (usually found in the utility room or basement)
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Turn the air compressor off and then turn the sprinkler system off from the control panel outside.
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To reassemble your device, follow these instructions in reverse order.
Team
Eastern Washington University, Team S27-G5, Munoz Fall 2019 Member of Eastern Washington University, Team S27-G5, Munoz Fall 2019
EWU-MUNOZ-F19S27G5
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