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Columbia Boiler Company - 80th Anniversary - 1936-2016

Keystone Series Boilers
Low or High Pressure Boilers

The Keystone Series boiler is a medium to large capacity, 3-pass, dry back, Scotch marine design, packaged boiler. The three-pass boiler design delivers the best in boiler fuel efficiencies.

Keystone boilers come with many standard features which make it easy to monitor and service for decades of reliable steam or hot water. Many optional features are available for Keystone boilers making them easy to customize to fit your unique needs.

Ideal boiler for


The three-pass design is a smart choice in the battle against rising fuel costs. It achieves its excellent fuel efficiencies by circulating the flue gases through the boiler three times. The longer flue gases stay in the boiler, the higher the efficiency achieved.

Optional Features

Find a dealer near you or contact us today to discuss your needs and get a quote for a reliable, long-lasting, and cost-effective boiler.

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