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In North Texas, winterizing a sprinkler system comes down to three jobs: shut off the irrigation water supply, drain and insulate the backflow preventer, and keep the controller from running during freezes. You rarely need the full air blowout used in colder states, but skipping these steps can leave you with a cracked backflow device after the first hard freeze. This guide walks through each step, then covers the freeze damage to look for once temperatures climb again. If yo