A gas water heater is a device that heats water using natural gas or propane as its fuel source. It typically consists of a storage tank where water is heated and stored until needed. When hot water is required, the heater activates, and the gas burner heats the water in the tank, providing a steady supply for household use. These heaters are popular for their efficiency and ability to heat water quickly. They come in various sizes to accommodate different household needs and can be installed in homes, apartments, or commercial buildings. Regular maintenance is essential to ensure safety and optimal performance.