The main reason I gave this company 4 stars out of 5 is that I do not think Jim can walk on water and I want you to know I am not one of his relatives. He installed a complete system for me in one of our previous homes and we called him when we moved into this house to come and upgrade the system and replace many of the heads. Jim is very profesional and dedicated to doing an excelent job. That being said, we have only used him three times simply because his work is so good I have not had to call him back as is often the case with other service and repair companies. I have recommended him in the past and will continue to recommend him to all of my associates.