? about sprinkler systems

goldenjes

Does anyone know how cold it has to get for the underground pipes to freeze?

~NB~

Depends on several factors, such as what they are made of and how deeply they are buried. Usually they won't freeze because this is taken into account when construction codes are written, and a licensed contracter is required to have the work inspected.

schoolsoutbride

I'm not sure, but the bigger problem I've heard the last few weeks are the spigots into the house bursting and leaking. We had our sprinklers blown out last week, finally, but I had the spigot wrapped in plastic and a sheet before that, just in case.

j+k

There are many factors as the previous poster stated...but I'd say if you are consistently getting temps in the 30 degrees consistently at night...you better be hustling and getting the pipes blown and prepared for winter. 

Here in Iowa, we don't use them for our home lawns much, but businesses do, and for the buildings I managed - we liked to have them prepped for winter by end of September. 

If you're not in the Southern, warmer states, I would not hesitate to get them prepared for winter.