Tankless DHW recirculation

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The 540P tankless model from A. O. Smith features an integrated, powerful recirculation pump to provide instant hot water in residential applications with dedicated recirculation lines. The pump is controlled with a simple user interface and multiple pump settings, which allow for customized operation to both meet hot water needs and maximize efficiency. The onboard computer modulates combustion to yield an Energy Factor (EF) of 0.95, while meeting ultra-low NOx gas emissions standards.
A.O Smith www.hotwater.com

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