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Today’s affordable devices can still be the wrong tool in the wrong hands, and what facility managers should ask before trusting results.
Tankless water heater is designed to offer 94 percent efficiency. The NCC1991 condensing water heater has an input range of 16,000 to 199,900 Btu. Two NCC199-DV units can be coupled to provide an input of nearly 400,000 Btu, with a turndown ratio of more than 36 to 1. Secondary heat exchanger transfers heat from the exhaust gases to the water.