How do I winterize my sprinkler system without a blowout?

Not all systems need to have the water blown out of them. 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.
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How do I manually winterize my sprinkler system?

Blow-Out Method Procedure
  1. Shut down the water supply and connect the air compressor to the irrigation system using the coupler. ...
  2. Find the sprinkler station highest and farther from the compressor and turn it on.
  3. Close the backflow valves.
  4. Slowly open the valve on the compressor.
  5. Gradually add more air pressure.
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What is the best way to winterize sprinkler system?

Steps for Winterizing Your Sprinkler System
  1. Step 1: Shut Off the Water. It will come as no surprise that the first step is turning off the water to the system with a main valve that's usually found near your water meter. ...
  2. Step 2: Turn Off the Timer. ...
  3. Step 3: Drain the Water. ...
  4. Step 4: Insulate Above-Ground Components.
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What temperature will sprinkler pipes freeze?

A sprinkler system will freeze if the temperature falls below 32° F (0° Celsius). Now, most indoor sprinkler systems are inside of buildings or homes where the temperature won't ever drop into the danger zone.
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How do you turn off sprinkler system before freezing?

Steps to Help Protect Sprinkler Irrigation System From Freeze
  1. Step 1: Shut off Water supply to Irrigation System. ...
  2. Step 2: Unplug Booster Pump (not installed on all systems) ...
  3. Step 3: Run System to Relieve Pressure. ...
  4. Step 4: Open Outside Pipe. ...
  5. Step 5: Open Outside RPZ Valve.
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How I winterize my Lawn Sprinkler System without blowing it out



How long does it take pipes to freeze at 32 degrees?

Pipes can freeze in as little as six to eight hours, meaning they can freeze overnight. If the outside temperature is below 32 degrees F and your pipes are unprotected, your chances for a frozen pipe increase.
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What happens if I don't winterize my sprinkler system?

If you forget to winterize your sprinklers, you run the risk that water will freeze in the irrigation valves, pipes and sprinkler heads. When water freezes, it expands causing the parts of your system to burst and destroying your sprinkler system.
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Should I run my sprinklers before a freeze?

It is best to turn on your system during the warmest time of the day when anticipating freezing conditions. Be sure the outside temperature is 37 degrees or above when you run your system. You ABSOLUTELY do not want to run your sprinkler system during a hard freeze as this will cause damage to your irrigation system.
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Can a pipe freeze and not burst?

Frozen pipes do not always burst, if the expanding ice can push water out through an open faucet. However, pipes freeze quite quickly, so the time between freezing and bursting can be very short.
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When should you winterize your sprinkler system?

As a general rule, you should winterize your system at least a week before the first freeze is expected. Your grass will survive without regular watering during that time, as the plants are already preparing for the dry winter season.
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How much does it cost to winterize an irrigation system?

The cost to winterize or activate a sprinkler system ranges from $53 and $121, or $87 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.
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How do you winterize an outdoor spigot?

Instructions
  1. Shut Off the Water Supply. Most of the time, but not always, the water line that feeds the outdoor faucet includes a valve to turn the water on and off. ...
  2. Disconnect Any Hoses. If a hose is connected to the faucet, disconnect it. ...
  3. Drain the Faucet. ...
  4. Install an Outdoor Faucet Cover.
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How do I winterize my sprinkler system with a lake pump?

How to Winterize a Water Pump
  1. Step 1: Locate and Open the Drain Plug. Find the drain plug and fill plug (if applicable) on your pump and open them to let all the water in the pump drain. ...
  2. Step 2: Fill the Pump with Propylene Glycol. ...
  3. Step 3: Use Compressed Air to Blow Out the Water Lines.
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Should I water grass before a freeze?

It is best to water the grass the day before a freeze because the wet soil acts as insulation to the grassroots. Roots are more likely to freeze if the ground is too dry. Stop watering when the ground freezes.
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Should you turn off sprinklers in winter?

Should I Turn Off My Sprinklers in Winter in California? In many cases, yes you should. As long as there is at least an inch and a half of rain per winter month, you don't need to supplement it with your sprinklers.
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What happens if you don't winterize?

Cracked pipes and fittings

If an irrigation system isn't properly winterized, water will be left in the pipes all winter. When temperatures get below freezing, the water will freeze and expand in the pipes, which could cause cracks in the pipe or on the fittings.
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Do I need to drain my irrigation system?

Homeowners need to drain their sprinkler systems in preparation for winter weather, or to make repairs to the system.
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Can sprinkler valves freeze?

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.
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How do you stop a frozen pipe from bursting?

Precautions You Can Take To Prevent Your Water Pipes Bursting:
  1. Keep Water Faucets Running. ...
  2. Direct Warm Air To Cold Areas Of Your Home. ...
  3. Leave Your Cabinet Doors Open. ...
  4. Disconnect Your Hose From The Outside Faucet. ...
  5. Install Heat Tape. ...
  6. Seal Leaks That Allow Cold Air Into Your Home. ...
  7. Check Your Home's Temperature.
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Will PVC pipes burst if frozen?

Things You'll Need

PVC pipes are in danger of freezing when surrounding temperatures approach 20 degrees Fahrenheit. Ice begins to form and gradually blocks the pipe. This blockage causes a rise in water pressure. Eventually the pipe ruptures and sends water everywhere.
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Will pouring hot water down drain unfreeze pipes?

In most cases, you can unfreeze a frozen drainpipe by pouring hot water down it. Fill a pot with a half-gallon of water, and heat it on the stove. When it begins to boil, carefully remove it from the stove and slowly pour it down the drain. This may be enough to thaw the ice and completely clear your drain.
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