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Founded In: 1958
Size: 50-99 Employees
Annual Vol: Undisclosed

Our Story

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The D.B. Johnsen Company began as the Robert E. Sullivan Company.  The late Robert "Bob" Sullivan founded the company in 1958 as the Northeast Ohio represenatative for Cleaver-Brooks Packaged Boilers.

At that time Bob had been working for Cleaver-Brooks in Milwaukee WI.  The factory allowed him the opportunity to establish a representative organization to serve the Cleveland market and to bring new boiler technology to the growing industrial base in Northeast Ohio.

Bob began working out of his basement and, soon after, acquired supplemental boiler lines, hired additional sales personnel, and as they say, the rest is history.  The Robert E. Sullivan Company became the premier supplier of boilers and boiler room equipment in Northeast Ohio.

In the early 1970's, Bob decided to pursue other avenues so he handed the reins of the company to his original hire, Don Johnsen.  With that change and a new name, the D.B. Johnsen Company was incorporated.

In 1986, Don Johnsen retired and sold the company to Jim DiCaprio, another of Bob Sullivan's early hires, and to Jim Stepanek who was a long time employee with the D.B. Johnsen Company.  Around that time "Jim and Jim" hired a new service technician, Mike Kovacs, who today manages the service department and oversees the sales of new boiler parts.

In 1997, Jim Stepanek retired leaving the company to Jim DiCaprio and opening the door for Jim's son Vince, a degreed engineer, to join the company.

In 1998, with an ever increasing need to perform boiler and pressure vessel weld repairs, the company acquired a small boiler repair shop and now has an ASME R-stamp certification.  The D.B. Johnsen Company has become one of the few, full service, boiler repair companies in Northern Ohio that can perform a wide range of troubleshooting, repair, and weld services for institutional boilers, commercial boilers, and industrial boilers.


In 2008, we parted ways with Cleaver-Brooks allowing us to expand our service area, product offerings and services, and to provide our customers with more cost efficient boiler parts.  Although we still service and source parts for Cleaver-Brooks boilers, we have aligned ourselves with other manufacturers to supply our new boiler room equipment needs such as Hurst Boiler and Welding Company, Harsco Industrial Patterson-Kelley, Precision Boilers, Miura Boiler, Victory Energy, BFS Industries, Riello Burners, QuikWater, Security Chimneys International, US Draft Company, JJM Boiler Works, and Century Controls.

Jim DiCaprio is now retired and Vince is continuing the legacy of the D.B. Johnsen Company.  Since our humble beginnings in a basement, the company has added complementary boiler lines, an extensive parts inventory, a service department with factory trained technicians, and a welding shop capable of ASME R-Stamp certified repairs.

The D.B. Johnsen Compay has developed a solid reputation with contractors, engineers, and clients as a partner to trust for supplying quality equipment with full service field support and unsurpassed technical expertise in developing boiler room solutions.

The D.B. Johnsen Company with continue our commitment to serve all of our customers' steam and hot water heating needs.

What We Do

Products/Services Relating to Boilers

Project Experience

Service Sector:
Public Private
Project Types:
New Alterations/Renovations
School / College / University
Fire / Police Station
Gas Station
Hotel / Motel
Industrial Maintenance
Apartments & Condominiums
City / Town Hall
Terminal - Airport / Bus / Railroad
Church / Synagogue
Sewage / Water Treatment Plant
Jail / Prison
Arena / Stadium
Parking Garage
Club House / Community Center
Mixed Use
Storage Facility / Warehouse
Assisted Living
Design Build
Auto Dealership / Service
Non-Building Construction
Swimming Pool
Non-Residential Building
Animal Hospital / Kennel
Court House
Fitness Center
Medical Office
Post Office
Radio / Television Station
Tract Housing

Service Areas

Preferred Brands & Manufacturers

BFS Industries
BFS Industries
Cannon Boiler Works
Cannon Boiler Works
Century Controls
Century Controls
Critical Fuel Systems
Critical Fuel Systems
Harsco Industrial - Patterson Kelley
Harsco Industrial - Patterson Kelley
Hurst Boiler
Hurst Boiler
Miura Boiler
Miura Boiler
Precision Boilers
Precision Boilers
Security Chimneys International
Security Chimneys International
U.S. Draft Co.
U.S. Draft Co.
Victory Energy
Victory Energy
Riello Burners
Riello Burners

Associations & Memberships

Member of AEE (Assn. of Energy Engineers) AEE (Assn. of Energy Engineers)
Member of ASHRAE (American Society of Heating, Refrigerating & Air Conditioning Engin ASHRAE (American Society of Heating, Refrigerating & Air Conditioning Engin
Member of ASME (American Society of Mechanical Engineers) ASME (American Society of Mechanical Engineers)
Member of Builders Exchange of Ohio Builders Exchange of Ohio
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