One thing we do hear often is that a system that has not been used for months does not need winterizing. This system here is a good example of that. The truth of the matter is water is still in the pipes and does not completely evaporate under ground. This system according to the owner is in need of a professional re build. We will be going back out in the spring and re building this system. We will be adding in a lot of parts to make it run correctly. If you need one sprinkler changed or a complete over haul let us know.