The Simplicity Series of concentric venting, non-condensing tankless water heaters from A.O. Smith are designed to make installations simple and flexible through a new gas convertible combustion system. The concentric vent design allows for simpler and more flexible installations with commercially available venting. Available in 140,000, 190,000 and 199,000 Btu/h versions, these units are designed to easily convert from natural gas to propane, with all necessary components in the box.
A.O. Smith www.hotwater.com