We had used Custom Lawn Sprinkler to install our system in our previous home in east york 12 years ago. When we moved out of the city, we were so relived to find out that they would not only install, but service our new area as well! We have been happy all these years with their service. And are even happier still with the new system. We referred 2 friends already, and have received free winterizations, although we would highly recommend them regardless. Its the same owner operated for over 40 years, and I believe this makes a big difference in the service. We have a neighbor on our street who installed with a cheaper company- but cant find them after only one year. I would worry about my warranty.
Overall, I would give the owner Diethard (who is a great personable fellow) and his respectable crews a 10 out of 10.