SprinklerWinterizations

A winterization is a compressed-air blowout: air is pushed through the system zone by zone until the water is out of the lines, the heads, and the valves. Anything left behind is a freeze risk. When trapped water freezes, it expands and splits whatever is holding it — a poly lateral, a fitting, a valve body, or the backflow assembly, which is usually the most expensive part of the system.

The technique matters more than the machine. Too much pressure and you can damage the very heads you are trying to protect. Too little volume and the water never actually clears the low spots. The right approach is adequate air volume at a controlled pressure, worked zone by zone, with time given for each one — not a quick blast through the manifold and a wave goodbye.

Timing is the other half. In eastern Nebraska the window is roughly September through November, ahead of the first hard freeze. Waiting until the forecast finally scares you is how everyone ends up calling in the same week. The people who book early get the good slots; the people who wait find out what a cracked backflow costs.

What's included

• Zone-by-zone compressed-air blowout

  Each zone worked until the water is genuinely out — not a single pass through the manifold.

• Controlled pressure

  Enough air volume to clear the lines, at a pressure that does not damage heads and seals.

• Backflow drained and protected

  Typically the most expensive component to replace, and the most exposed to freezing.

• Valves and manifold cleared

  The low spots where water likes to sit and wait for December.

• Controller shut down

  System put into off mode so it doesn’t try to run a cycle in January.