A water heater is a common household appliance that is designed to heat water for various purposes such as bathing, washing dishes, or laundry. It provides a convenient and continuous supply of hot water whenever needed. Water heaters come in different types, including tank-based and tankless models. 

Tank-based water heaters store and heat water in a large insulated tank, ensuring a ready-to-use supply of hot water. These tanks are typically fueled by electricity, natural gas, or propane. Tankless water heaters, on the other hand, heat water on-demand as it passes through a heating element, eliminating the need for storage tanks and providing hot water instantly. Water heaters often have adjustable temperature controls, allowing users to set their desired hot water temperature. They also feature safety mechanisms such as pressure relief valves and thermostats to prevent overheating or excessive pressure buildup. Water heaters are available in various sizes to accommodate different household needs, from compact units suitable for small apartments to larger units capable of serving multiple bathrooms. Regular maintenance and periodic flushing are recommended to ensure optimal performance and prolong the lifespan of the water heater. With their convenience and reliability, water heaters play a crucial role in providing hot water for everyday activities, enhancing comfort, and promoting cleanliness in households and commercial establishments.