Water heaters are appliances used to heat water for various purposes, such as bathing, washing dishes, or cleaning. They provide a continuous supply of hot water to meet household or commercial needs. Here are some key features and components of water heaters Tank or Tankless: Water heaters can be either tank-based or tankless. Tank-based water heaters store and heat a certain volume of water in an insulated tank, ready for use. Tankless water heaters, also known as on-demand water heaters, heat water instantly as it flows through the unit without the need for storage. Heating Element or Burner: Water heaters use a heating element or burner to raise the temperature of the water. In electric water heaters, a heating element, usually made of metal alloy, heats the water. Gas water heaters utilize a burner, typically fueled by natural gas or propane, to heat the water.