Built Like a Bock

Robust, innovative commercial water heaters
built by people who care.

Built on Innovation


Bock, leading the industry in water heater product innovations…


OptiTHERM®

First to market modulating, condensing water heater

ElectriTHERM™

New heavy duty Digital electric water heaters

OptiTHERM® Outdoor

First water heater to maximize space in climate acceptable areas

Turboflue®

Revolutionary heat exchanger supplying superior heat conduction and fuel efficiency


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Manufactured in the USA

Bock products are proudly manufactured in our two Wisconsin locations. Mid-West values and craftsmanship are built into every product we make.

Employee Owned

Bock is 100% Employees Owned. Every Bock employee is personally committed to supplying you exceptional products with the highest level customer service and technical support.