How to Blow Out a Sprinkler System By HowToLou in OutsideWater77,4231315Save PDFFavoriteIntroduction: How to Blow Out a Sprinkler SystemBy HowToLouFollowMore by the author: It usually costs $50 to $100 to have your sprinkler system blown out for the winter. You can do it yourself with a one-time purchase of a $150 air compressor.