Natural gas hot water systems are ideal for bigger homes and come in a range of sizes and varying energy efficiency ratings to suit different needs. They have quicker heat recovery times and mains pressure is able to supply multiple taps at once. So if you have one hot water system feeding multiple bathrooms which are likely to be used at the same time, a large storage tank can meet the flow demand better than an instantaneous unit.
You’ll also find storage systems are useful in power outages as the water is preheated in insulated tanks, and they use a gas pilot light rather than rely on mains power to initiate reheating when required.
They may not be as efficient as instantaneous natural gas systems which only hat water as it’s required, but with energy ratings going up to six stars, they can provide a great volume of water while providing clean, economical and reliable hot water. They are often considered easier to maintain in areas with hard water.