About DB Sales

We have provided boiler, industrial equipment, plumbing, and energy efficient commercial HVAC services to Southern California for over 40 years.

DB Sales is a licensed and bonded contractor in California, holding both a C-4 and C-20 contractor’s license. We have received numerous awards and industry recognitions over the years, notably the Southern California Gas Company’s Trade Pro Partner of the Year Award.

We were founded in 1978 to serve commercial and industrial facilities throughout Southern California. We have been expanding our capabilities ever since for providing, servicing, and repairing heating and cooling equipment.

Stephen Mertz has been CEO of DB Sales since 2010. Steve holds a degree in Mechanical Engineering, B.S.M.E. from Bucknell University in Pennsylvania. He’s been involved in boiler system design and application for more than two decades and has advanced expertise in designing steam and steam boiler systems, high efficiency hydronic, and domestic heating systems. His focus on energy efficient systems has helped lead the company to exponential growth.

Steve Mertz

President and CEO

Energy Efficient Boiler Sales, Service, Rentals, and Parts

DB Sales is an industry leader in the sale and service of boilers and boiler parts. We provide the best service and highest efficiency equipment while also reducing emissions that meet California’s stringent guidelines. Since most boilers only operate at around 60%, replacing or retrofitting of an older boiler could deliver huge cost savings for a company.

Our Advantage

Over 45 years of boiler expertise

Factory-certified technicians

Knowledgeable customer service

Short lead times

Large inventory of boilers & parts

Expert in Ultra Low NOx and Energy Efficient Solutions

DB Sales’ expertise in providing high efficiency chiller plants, high efficiency pumping solutions, and high efficiency air handler solutions are an important component of the company’s growth.

The company’s emphasis on Ultra Low NOx boilers for commercial customers has resulted in many success stories.

Serving Los Angeles and all of Southern California

DB Sales in located in Garden Grove, on the border of Los Angeles and Orange Counties. We provide service throughout Southern California, including Imperial, Kern, Los Angeles, Orange, Riverside, Santa Barbara, San Bernardino, San Diego, and Ventura Counties.

We reward our employees for providing the best possible customer service. We continually train our employees and stay up to date on the newest advancements in the industry. In turn, this has earned us a reputation as an industry leader when it comes to industrial boilers, pumps, accessories, and other hydronic needs.

Trade Organization Memberships


Building Owners and Managers Association (BOMA)
America Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE)
Refrigerating Engineers & Technicians Association (RETA)
State License Number: 984459