An annual tradition has begun for people who live up north and don't want their irrigation lines to freeze up in the winter. Yes, it's time to winterize the sprinkler system. If you're not doing it soon, it should at least be on your radar.
The property across the street from mine was blowing out their irrigation system already, prompting me to book an air compressor for early November. There's no set time for winterizing a sprinkler system although it is best to do it before winter sets in. In Canada that might be now, while in New England, early to late November is more common. In New York, Thanksgiving used to be our week for winterizing the system.
If you are germinating seed or growing in sod, you may want to hold off winterizing the sprinkler system as long as possible if the weather dictates continued watering. Keep an eye on the weather, winterizing the system too soon could result in dried out sod or seed.
If you don't have access to an air compressor or don't want to be bothered with winterizing your sprinkler system, call a professional irrigation company. Choose a professionally licensed company with a good reputation. Frozen lines can cause a lot of costly damage come spring and winterizing the system is not something to be taken lightly.
Winterizing a Sprinkler System