How Cold is Too Cold for Underground Sprinklers?

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  • Post last modified:December 27, 2022
  • Reading time:3 mins read

Winter is a time of cold weather and cozy blankets, but it also means taking extra care of our outdoor investments.

If you have an underground sprinkler system, you need to take special care of it when the temperature drops in order to prevent your system from freezing or cracking due to the cold.

Let’s explore how to prepare your underground sprinkler system for winter so that it stays protected and functioning at its best.

Ideal Temperatures for Underground Sprinklers

The ideal temperature for an underground sprinkler system to work correctly is 36-40 degrees Fahrenheit.

While this may seem like a relatively low number, remember that the ground can get much colder in winter due to air and soil temperatures dropping lower than normal.

Therefore, any temperatures below this range can cause issues with your sprinkler system.

What To Do In Harsh Winters?

In climates with particularly harsh winters, heat coils or heated enclosures may be necessary to protect your sprinkler system from freezing and cracking due to the cold weather.

Heat coils are installed directly into the pipes beneath the ground and provide direct heat to keep the water within them warm enough that they don’t freeze over—perfect if you live in areas with especially chilly winters!

Heated enclosures are also available as a way to insulate your underground pipe systems against freezing temperatures.


Homeowners with underground sprinklers should take care in colder climates to ensure their system can handle the cold weather. Many systems need consistent temperatures of 36-40 degrees Fahrenheit which could be difficult depending on where you live.

In these instances, opting for heat coils or heated enclosures may be necessary to protect your sprinklers from further damage caused by extremely cold weather conditions.

Taking these steps will help ensure that your underground sprinkler system continues working well all year round!