Hot water is a vital component of modern living, and it is used for a variety of purposes in residential, commercial, and industrial settings. A hot water system typically consists of a water heater, which heats up water to a desired temperature, and a distribution system, which delivers the hot water to where it is needed.

There are different types of hot water systems, including tank-based systems and tankless systems. Tank-based systems use a storage tank to store hot water, while tankless systems heat up the water on demand, without the need for a storage tank. Both types of systems can use various energy sources, such as electricity, natural gas, propane, or solar energy.