HPS Mechanical, Inc. is a leading plumbing contractor with over 60 years of experience in delivering high-quality plumbing solutions. Founded by Harry DenHerder as Harry’s Plumbing Service, HPS has grown from a local service provider to a trusted partner for large-scale residential, commercial, industrial, and municipal projects across California. Known for our commitment to innovation, we leverage cutting-edge technology like robotic layout, BIM modeling, and standardized prefabrication to ensure precision, efficiency, and sustainability. With a skilled team of over 225 professionals, we handle everything from routine residential repairs to complex municipal installations. At HPS, we believe in putting people first, fostering a culture rooted in family values and excellence. From concept to completion, our approach ensures every project is delivered on time and to the highest standards.