Winterizing Your Sprinkler System

Every year, before the ground freezes, it is necessary to “WINTERIZE” your irrigation systems


Why Winterize?


This must be done in areas of the country where the frost level extends below the depth of the installed piping.  In Minnesota this is very much the case!  Even if you have drained some water out of the system, the remaining water can freeze, expand and crack the PVC and polyethylene pipe.   Freezing water in the backflow assembly, control valves and sprinkler heads will damage the internal components and could crack the body.

When to Winterize

To minimize the risk of freeze damage to your irrigation system, you’ll need to “winterize” your irrigation system.  We start October 1st and continue on through the end of the month.  If we performed this service for you last year, we will send you a reminder post card in the early fall.  We’ll also follow up with a phone call sometime in October one to two days ahead of our arrival to let you know we’re coming.  If you’re not sure if you’re on our schedule or are a new customer or would like to update your contact information, please call us at 320-253-5384 or contact us through our website to get on our list.

Before Winterization, Protect Your Investment!

Nights with a hard frost can damage your vacuum breaker or lake pump.  Remember to cover these items on nights when a hard freeze is expected if your system hasn’t been winterized yet.  These items are susceptible to early freezes because they are not insulated by the ground like the rest of your system.  Things that can be used to cover these items are a heavy quilt, sleeping bag, rugs or other insulating material.  Remember to cover your vacuum breaker against your house or cover your pump against the ground.    You will have years of worry-free service and keep your warranty valid by continuing to have Schwegel’s winterize your system.