Bock water heaters and storage tanks are perfect for all residential applications, particularly those with high-volume hot water demands. In commercial and industrial applications, our outstanding recovery capabilities make Bock water heaters ideal for everything from light demand to high demand / continuous-use requirements. Snce 1929 Bock has been manufacturing a full line of quality-crafted, high-efficiency products, including oil-fired water heaters, gas-fired water heaters, dual-fuel water heaters, indirect coil tank water heaters, and glass-lined storage tanks.