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About Us

About HPS Plumbing Services

The Best Bakersfield Plumbers with the Best Tools for the Best Customers

No matter what plumbing issue you are facing, entrust them all the HPS. Equipped with only the top quality tools in the plumbing industry, HPS is dedicated to providing expert plumbing services in Bakersfield and beyond. With decades of extensive experience accomplishing tens of thousands of residential, commercial, and industrial plumbing projects, our team can confidently get the job done right every time.

65 Years Experience

Our History

HPS Mechanical, Inc. began its journey as Harry’s Plumbing Service in 1959, founded by Harry DenHerder with a single truck focused on service work. Initially, the company grew steadily, specializing in service and remodel plumbing. In 1976, Les DenHerder purchased the business, and since then, HPS Mechanical, Inc. has continuously expanded its offerings to include new construction, pipeline services, and engineering design.


In 1985, to reflect a more professional company image, the name was changed to HPS Plumbing Service, Inc. That same year, in November, HPS acquired Quality Backhoe, marking the start of site work services. For the next three decades HPS continued to expand and became one of the top plumbing companies in California. In June 2018, a pivotal moment in the company’s history occurred when Les and his son Scott DenHerder formalized an agreement, making HPS Mechanical, Inc. a third-generation family business.
Under this new leadership, HPS Mechanical, Inc. has grown further, expanding the services that Harry started with into San Diego markets. In 2024, HPS expanded its services to include HVAC services in Bakersfield and surrounding areas. Today, HPS Mechanical, Inc. offers a comprehensive range of services, including residential and commercial plumbing and HVAC Service, institutional and military plumbing, industrial piping, heating and cooling, site work, and specialized engineering projects across California.


The company remains dedicated to continuous improvement and innovation, constantly pushing the boundaries of what’s possible. The legacy and family-owned culture established by Harry and Les continue to thrive through the leadership and vision of Scott and the dedicated team of employees who have contributed to HPS Mechanical, Inc. ongoing success.

Quality Bakersfield Plumber for Residential, Commercial & Industrial Needs

HPS excels at both small and large scale plumbing projects. In Bakersfield, HPS offers a full range of residential plumbing and repair services. HPS is well known for our commercial, municipal, industrial piping, and military projects and carries out most of our work as a mechanical contractor specializing in plumbing and piping as well as performing site utilities in support of mechanical systems. HPS is licensed in California for general engineering and general building and holds specialty licenses for plumbing, HVAC, pipeline, fire protection, septic, and boiler systems.
With the exception of insulation services, HPS employees perform all work on our projects. We have a core crew of 225 permanent field employees that can expand to meet any required schedule. Although 60 percent of our work is performed as a subcontractor, HPS does bid specialty projects as a prime contractor with a full-time engineering and CAD team capable of design/build projects for both private and public owners.

Committed to Safety

HPS has an excellent in-house safety program. Over the last two decades, losses in the areas of general liability and workers’ compensation have accounted for less than 15% of our premiums. Because of our impressive safety record, we can provide higher coverage limits, thereby, providing additional benefits to owners and general contractors.

Outstanding Plumbing Repair in Bakersfield and San Diego

Working Together for Your Satisfaction

At HPS, we believe every client, employee, and vendor brings something special to the team. That’s why you’ll find very little turnover on our crews. And you’ll find that most of our vendors, like our employees, have worked with us for years! The strong, positive relationships we’ve developed with our vendors are crucial to us for competitive pricing and timely delivery of materials–both of which are essential to keeping your projects under budget and ahead of schedule. Using this interwoven team of experts enables us to provide the talent and knowledge we need for the success of your project.