plumbing - Winterize Sprinkler System - Home Improvement Stack Exchange

I cannot find a service in northern NJ to winterize my sprinkler system for less than $100, so I want to try doing it myself, I just don't want to break anything. I've watched a few videos

How to winterize your sprinkler system

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People always forget to winterize there sprinkler system. But I love installing these : r/RogerWakefieldPosts