The HCG Series High Efficiency Commercial Gas Water Heaters embody all that's great about the American brand. They're designed for outstanding reliability, maximum installation flexibility and, above all, excellent thermal efficiency. In comparison to standard water heaters with only 80% efficiency, they deliver up to 400,000 BTU input and up to 96% efficiency. With their small footprint and top mounted controls, HCG Series units are a natural cost-saving choice for restaurants and other similar applications. ENERGY STAR® Qualified.