Gas hot water systems can be run using either mains gas (also known as natural gas) or LPG (Liquefied Petroleum Gas), which is bottled.
If you are already connected to natural gas in your home, then this is a good option.
It is more cost effective than electricity and for most states and territories in Australia, there are no varied rates of peak and non-peak charging and therefore the gas systems can heat the water any time of the day.
These systems are mostly installed outdoors due to their ventilation requirements, however they have been known to be installed indoors with a flue.
Gas systems have an energy rating – which is an efficiency measure of how much energy is consumed.
