When water freezes it expands, thus cracking or bursting the pipes in or around your home. This includes your sprinkler system, and it’s why it is highly encouraged to never leave your sprinkler system on during the winter, as you may end up repairing, or worse, replacing the entire system.
A new sprinkler system can cost anywhere from $3,000 to $5,000 dollars or more! In order to avoid this cost it is best to turn off your sprinkler systems water and open all drains by: October 15th if you have an above ground backflow preventer