The D.B. Johnsen Company began as the Robert E. Sullivan Company. The late Robert “Bob” Sullivan founded the company in 1958 as the original Northeast Ohio representative 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. This gave Cleaver-Brooks the presence that it had been lacking in Northeastern ...
A perfect part load performer, the MODU-FIRE® FD boiler changes both fuel and air at constant ratio to match boiler ...
read moreDesigned to maximize efficiency, the ENVI® control monitors and modulates the combustion and ignition of the boiler to ...
read moreHarsco was the first copper boiler manufacturer to offer combined propane/natural gas technology. Harsco’s P-K ...
read moreHarsco water heater tube bundles can be replaced to your specific requirements on all our products, regardless of how long ...
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