The RediHeat instantaneous water heater can produce hot water instrantly within ±4F of the set temperature under widely varying demands. Designed with a unique feed-forward temperature control system, the RediHeat is suited to hot-water applications where tight temperature control and instant response to changes in demand are required. The RediHeat features a spiral-tubed helical heat exchanger for efficient heat transfer in a compact space. The rugged casing and Bourbon tube configuration allows the entire assembly to expand and contract without localized stressing. — Spirax Sarco Inc., Blythewood, S.C.