A Water Boiler is a device used to heat water to a desired temperature or to boiling point for domestic, commercial, or industrial use. It is commonly used in homes, restaurants, offices, and food processing areas for making tea, coffee, cooking, cleaning, or sterilization. The boiler typically consists of a water tank, heating element (electric coil, gas burner, or other heat source), thermostat, control panel, insulation, inlet for water supply, and an outlet or tap for dispensing hot water.

In operation, water is filled into the tank either manually or through an automatic inlet. When the boiler is switched on, the heating element converts energy (electricity or gas) into heat, raising the temperature of the water. The thermostat monitors and regulates the temperature, ensuring the water reaches and maintains the set level without overheating. As the water heats up, it becomes ready for use and can be dispensed through the outlet tap. In some models, the boiler automatically reheats water to maintain a constant supply of hot water. Safety features such as pressure relief valves, automatic shut-off, and temperature controls help prevent accidents. The water boiler provides a fast, efficient, and reliable source of hot water for various applications.