A. O. Smith, a manufacturer of residential and commercial water heaters, has launched a new condensing tankless water heater that features an integrated, powerful recirculation pump.

Well suited for homes with a high demand for hot water, the 540P tankless model integrates a recirculation pump to provide instant hot water in residential applications with dedicated recirculation lines. The pump is easily controlled with the user interface. Multiple pump settings allow for customized operation to meet hot water needs and maximize efficiency.

Along with the recirculation pump, the 540P has an aquastat to govern water temperature and pump control built inside, which simplifies installation for A.O. Smith contractors.

The onboard computer modulates combustion to yield an Energy Factor of 0.95 while meeting strict gas emissions standards. As part of the 199k BTU-per-hour condensing tankless family, the environmentally friendly 540P provides instant hot water.

Available for propane and natural gas systems, the 540P is built with commercial-grade materials such as marine-grade 316L stainless steel, giving it a 15-year warranty. For more information, visit http://www.hotwater.com.