A boiler system is a closed vessel that heats water or other fluids to generate steam or hot water for various applications. These systems are commonly used in residential heating, industrial processes, and power generation. The main components include the boiler itself, a burner for fuel, and a heat exchanger to transfer heat to the water. Boiler systems can be fueled by natural gas, oil, electricity, or biomass. They operate on the principle of converting energy from the fuel into heat, which is then transferred to the water. Proper maintenance is essential for efficiency and safety, as well as to prevent issues like corrosion or leaks.