State offers its Titan(TM) and Titan(TM) LV powered-burner commercial gas water heaters with 80% efficiency. Additionally, Titan Large Volume units are available in gas, oil-fired or convertible gas/oil "dual fuel" models. The Titan LV (TP models) combines storage capacities up to 600 gallons with inputs up to 2.5 million btus, made possible by powered-burner design. With large-volume storage and recoveries as high as 2,400 gallons, Titan LV is designed for large commercial, industrial and institutional applications. The standard Titan (GP models) offers inputs up to 750,000 btus for small- to medium-sized commercial applications. State Industries.