How cold is too cold for sprinklers?
As the leaves begin to fall and temperatures start to drop, it’s time to shut down your lawn irrigation systems and prepare for winter’s bitter cold. Sprinkler pipes and other components are at risk of freezing and breaking when temperatures drop below 32 degrees Fahrenheit.
What happens if your sprinkler system freezes?
Water also can freeze inside the sprinkler heads themselves. As the frozen water expands, it can crack these heads and the supply tubes that lead to them, and those can require complete replacement of a component, as well.
How do I keep my sprinkler system from freezing?
Shut off the water supply to the irrigation system. The main shut off valve for your irrigation system needs to be protected against freezing. Make sure it is wrapped with insulation (foam insulation tape and a plastic bag) to protect it from harsh winter temperatures and prevent it from freezing.
What temperature should I winterize my sprinkler system?
So a good rule of thumb is when you see 32 degrees for the first time in the forecast, drain your sprinkler system as soon as possible.
Will pipes freeze at 31 degrees?
Water freezes at 32 degrees Fahrenheit, but indoor pipes are somewhat protected from outdoor temperature extremes, even in unheated areas of the house like in the attic or garage. As a general rule, temperatures outside must drop to at least 20 degrees or lower to cause pipes to freeze.
At what temperature should you stop watering grass?
According to this article, “Watering woes are not over yet” you should not stop watering at this time. In fact you should keep watering until the soil, ground temperature falls below 40 degrees Fahrenheit.
Can a dry sprinkler system freeze?
While dry systems are less susceptible to freezing compared to wet systems in cold weather conditions, they are still capable of freezing. This is due to the fact that the air in the pipes contains moisture, which can condense in the low points of the pipes and freeze.
Do all sprinkler systems need blown out?
You can get away with not blowing out the sprinkler lines on some systems, but you will need to drain it properly anyway or you will freeze your backflow preventer, ball valves, copper pipe and/or valve manifold. You can crack a sprinkler head or fitting even though the poly pipe may not crack during a freeze.
How long does it take for irrigation pipes to freeze?
Then it’s matter of how well your pipes are insulated and if they run through a heated area or not. With a reasonable amount of insulation, even pipes in an unheated area could take up to 6-hours to freeze.
How much does it cost to winterize a sprinkler system?
The cost to winterize or activate a sprinkler system ranges from $53 and $114, or $82 on average. Maintenance during the irrigation season averages about $115, on top of these expenses. To keep your sprinkler system working properly, it must receive regular maintenance from a professional plumber.
How do I winterize my sprinkler system without a blowout?
You can winterize a sprinkler system without an air compressor if all of your irrigation lines are buried at a slight downhill slope. Simply shut off the main water supply to your system and open the drain valves at the end of each zone.
What is a hard freeze for sprinkler system?
A hard freeze is when then outdoor air dips below 0 degrees Fahrenheit. Below the freezing point, some of the most critical components of a sprinkler system can be damaged. Keep an eye on the local weather reports in the newspaper or on television for when the first freeze of the year is expected.
Should you let your outside faucets drip in freezing weather?
When the weather is very cold outside, let the cold water drip from the faucet served by exposed pipes. Running water through the pipe – even at a trickle – helps prevent pipes from freezing.
Do sprinkler systems need to be winterized?
To minimize the risk of freeze damage, you’ll need to winterize your irrigation system. In areas where winterization is mandatory, irrigation systems are installed using one of three types of water removal: manual drain, auto drain, or blowout. If you don’t know your system type, it is best to use the blowout method.
When should I turn off my sprinkler system for winter?
You should shut off your irrigation system just before temperatures in your region begin to dip below freezing at night. Don’t shut off your irrigation system too early. Often homeowners shut their systems down as soon as the fall season arrives because they believe that their lawn requires less water.