A gas hot water system is a standard hot water system that uses gas to heat the hot water. Gas hot water systems provide an economical way to heat your water, especially when compared to an electric hot water heater.
Quite simply, gas water heaters heat the water within the hot water system by burning the gas (either LPG or Natural gas, depending on the system type) in a covered burner which is at the base of the hot water system. The heater exhausts the produced heat into the dwelling space and thus provides you with hot water. A gas hot water system is available as a storage unit, or as an instantaneous unit – you can even boost your solar hot water system with gas to provide added support.