A commercial gas water heater is a type of water heating system that uses natural gas or propane to heat water for commercial use. This type of water heater typically consists of an insulated tank, one or more burners, and a thermostat. The burners use natural gas or propane to heat the water, which is then stored in the insulated tank. The thermostat controls the temperature of the water and turns the burners on and off as needed to maintain the desired temperature.

Commercial gas water heaters are widely used in commercial settings such as hotels, hospitals, and industrial facilities, where large amounts of hot water are required. They are typically more powerful and have a larger storage capacity than residential gas water heaters. They also have a higher recovery rate, meaning they can heat up more water in a shorter amount of time.

Gas water heaters are relatively efficient, but they do produce greenhouse gas emissions, which can contribute to climate change. They are also subject to fuel price fluctuation and can be affected by supply chain disruptions. They can be used in areas where natural gas is readily available, but they are not suitable for places where natural gas is not available or where the cost of natural gas is prohibitively high.