I needed a pressure reducing valve installed on my home. After calling around, Diamondback Mechanical offered the competitive price. Not sure if he is the owner but Steve Herzog called me back very quickly to schedule the installation. The plumber (Scott Andrews) was timely, did the job well (no leaks and reduced the pressure going into the home), and had no problem answering my questions as he did the work. If asked by buddies, I'd recommend this company.