The Navy desired a more efficient, safe heating method for its submarines. They wanted a reliable system with a smaller footprint. The new design was required to be rugged enough to withstand the military shock and vibration tests, and must beable to hold up to the real life rigors of military action. Chromalox responded by introducing our electric duct heaters to the Naval design engineers. They were shown that electric power is much easier to install throughout a submarine compared to steam piping. The ease and flexibility of installation in compact confined areas of the submarine made it a perfect fit for the vessel. Electric wiring resolved the hazards of injury to personnel, without the heat loss of steam piping.

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