A. O. Smith Cyclone Xi

<p>The A. O. Smith Cyclone Xi is engineered to deliver conventional power-vent or sealed combustion power direct-vent versatility and low NOx emissions in a space-saving design.</p> <p>The innovative design takes the unit&rsquo;s performance to a higher level with up to 96 percent thermal efficiency. The Cyclone Xi provides significantly higher hot water output, with dramatic savings on operating costs compared to units with the standard 80 percent efficiency.<br /> Unit includes:</p>