I was in need of an experienced person competent in sprinkler systems, which included troubleshooting a problem I was having with the timer box. Being out of town, I tried Thumbtack. Out of 5 businesses who responded, Dan won my confidence quickly with his offer to go out and take a look before giving me a quote. He quickly figured out what was wrong and we communicated via thumbtack and email and agreed on a price and day that he would install the correct timer box. Within two days, the system was working. He finalized our communications with a bill which included a labor and parts warranty. I highly recommend Dan due to his knowledge of sprinkler systems, professionalism, and expedience.