About Our Company Since 1947, Keesen Lawn Sprinkler has been the leader in the sprinkler system industry in Denver.  We specialize in residential sprinkler system installation, repair, and maintenance. Our emphasis on quality and efficiency are more important now than ever before. Many things can improve the efficiency of your sprinkler system - letting you keep more grass green with less water. If you are a Denver water user, you can use the link on this page to calculate how much money you could save per year by increasing the efficiency of your sprinkler system. Our technicians are trained and equipped with the latest tools and techniques to sprinkler your yard efficiently. About Our Service Our fleet of mobile technicians are able to troubleshoot and repair any kind of residential sprinkler system problem - usually on the first call. All our trucks are stocked with the necessary parts, tools and, most importantly, trained technicians! Our technicians show up at your house on time and ready to do the job! We usually finish the job on the first call. If you use Denver Water, click the above button to calculate your water savings.