Takagi introduces its high-efficiency, condensing, ultra-low NOx tankless water heaters, available in three sizes of indoor and outdoor models at 160,000 Btu, 180,000 Btu and 199,000 Btu. The largest can be used for both residential and commercial applications. All models are Energy Star-qualified. They function with continuous maximum flow rates up to 10 gal., and feature a durable double heat exchanger: a primary made of HRS35 copper for resilience against erosion, as well as a secondary made of 316L stainless steel for protection against corrosion.
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