Lochinvar’s two new ARMOR wall-mount commercial water heaters feature inputs of 125,000 Btu/hr., and 199,999 Btu/hr. They offer up to 96% thermal efficiency with a 5:1 turndown and a compact design that fits the tightest installations. Designed to be installed with a separate storage tank, this design protects against the harmful effects of lime-scale buildup. Since ARMOR heats the water and then deposits it in an unfired storage tank, lime-scale buildup does not impair the heat transfer efficiency.