Gas storage water heaters heat and retain a quantity of water in an insulated cylinder, ready for use. They provide hot water at mains pressure, and as they can deliver the whole stored quantity immediately it's needed, can service many outlets (such as several showers) at the one time. And it will deliver to them all at mains pressure. When emptied, it takes time to reheat and have you back in hot water, but high recovery models (like Rheem Stellar) can reheat 200 litres an hour.
Gas hot water systems generally produce far less greenhouse gases than electric water heaters; around 25% to 33% less. They generally also have lower upfront costs than solar or heat pump hot water systems. However, if you don't have natural gas connected to your home (uncommon in the Perth Metro area) you will need to get a mains gas connection or use bottled gas (LPG). Depending on how much hot water you use, LPG may be more expensive to run than natural gas.
We are Rheem stockists and prefer to supply Rheem gas water heaters due to Rheem's longevity in this market; they have been manufacturing water heaters in Australia since 1939.
Most Gas storage water heaters have an adjustable thermostat to set the water temperature. When the temperature at the bottom of the tank drops below the level set on the thermostat the pilot flame ignites the main burner so the water is kept constantly hot. The energy from the pilot flame is not wasted as it helps to heat the water in the tank. Storage hot water systems come in a range of tank capacities from 90 to 170 litre in 3, 4 or 5 Star energy efficiency levels. Some units use a special flue system to recirculate the hot flue gases around the outside of the tank to increase heat transfer into the water and increase their efficiency.
More than ever, Rheem Stellar® offers you the very best combination of performance, durability and features all backed by our 10 year cylinder warranty. Whatever the size of your family, Rheem Stellar® has a model that's right for you. Enjoy superior durability, efficiency and performance, along with the peace of mind that comes with our experience and reputation as Australia's favourite hot water system.
Rheem Stellar® is synonymous with the best in gas hot water providing superior energy efficiency and hot water recovery. For 20 years, hundreds of thousands of Australian families have appreciated Stellar's high performance ability to service many showers at once. The 5-Star gas model range represents an affordable gas hot water option for medium to large families
Reduce your gas bills and your carbon footprint at the same time with Rheem's 4 Star gas water heater. It's an easy and more energy efficient replacement for most older gas water heaters. The 4 Star energy efficiency means less gas is used than 3 Star gas water heaters, to save on energy costs. Available in 90L, 135L & 170L capacities
RheemPlus® 265 has a maximum temperature of 50°C so you can be sure turning on the tap is safer for everyone in the family. Its 5 Star energy efficiency means lower gas bills. And the 275 first hour capacity makes it the perfect gas water heater for medium to large families.
Gas Continuous Flow water heaters heat water continuously on demand, giving hot water that 'never runs out' as long as water keeps flowing. They are ideal where there are not a large number of hot water demands at once but many at different times (such as many people having showers one after the other). They are compact and come in varied capacities to suit small or large homes. Available in 50°C or 60°C temperature models, they can have remote temperature controllers fitted enabling you to set the hot water temperature. They are typically 5 Star energy efficient, but models up to 7 Star equivalent are also available, as are Indoor models (which require a flue). They need a power point as well as gas supply (which will need to be a larger pipe than for a Gas Storage water heater).
Water is heated by a gas burner as it flows through a coiled pipe called a heat exchanger. The gas burner starts when a hot water tap is turned on. It only heats the amount of water that is required instead of continuously heating a full tank. As they don't store any hot water, there is no heat loss from a tank and so can have energy and cost savings. To allow enough time for heating, the water is slowed down as it flows through the heat exchanger. This means that instantaneous units supply hot water at a lower pressure than storage systems.
* Replacement of the same or similar, size and energy source system (ie: your existing 50L external electric storage, replaced with a new 50L external electric storage system in the same location). Existing hot water system must be located on the premises in compliance with relevant standards and by-laws. The cost does not include the supply and installation of a tempering valve if required.
^ Cylinder Warranty, see the Rheem Website for full warranty information.