A. O. Smith’s 540P series integrates a recirculation pump to provide hot water in residential applications with dedicated recirculation lines. The pump is easily controlled with a simple user interface; multiple pump settings to allow customization to meet needs while maximizing efficiency. The onboard computer modulates combustion to yield an Energy Factor of 0.95 while meeting the strictest gas emissions standards. As part of the high-efficiency tankless family, the 540P series is environmentally friendly. It uses up to 199,000 Btu of natural gas to deliver an endless supply of hot water for a three-bath home in northern climates and a four-bath home in southern climates. It is built with marine-grade 316L stainless steel, giving it an industry-leading warranty.

A. O. Smith. www.hotwater.com