Electric hot water systems are by far the most common sort of hot water heaters in the Australian home.
They come in 3 different power ratings for the Queensland market, 1.8kw, 2.4kw and 3.6 kw. Electric hot water systems come in tank sizes that ranging from 25L to 400L.
Different size elements does not equal different energy ratings, for example a hot water heater with a 1.8kw element will use half the power as a 3.6kw element but will take twice as long to heat the same body of water to the same temperature.
Electric hot water system are manufactured out of mild steel tanks that is vitreous enamel lined internally and protected by a sacrificial anode and stainless steel, holding the temperature within for longer periods of time. An electric hot water system generally will equate to at least 1/3 of your power bill when you don’t have P.V solar usage.
Below is an approximate person to size recommendation:
Brands of Electric Hot Water Systems
Rheem manufactures a large range of electric hot water heaters in Australia.
Warranties vary between 5-12 years depending on size and product.
They require servicing every 5 years.
The AquaMAX name has been around since 1988, they were a family owned business until Rheem brought them in 2009.
The AquaMAX hot water range come with warranties between 7-10 years depending on the size of the cylinder.
They require servicing every 5 years.
Vulcan electric hot water systems is owned and manufactured by Rheem hot water systems
Vulcan only make their electric hot water range in the mild steel Vitreous Enamel style.
The Vulcan 50L Electric Storage water heater has a 7yr cylinder warranty and the Vulcan Electric 80L through to the 400L carry a 10 year cylinder warranty.
They require servicing every 4-5 years.
The warranties are 7 years on the 25L and 50L systems and 10 years on all above that, but do require a service every 5 years.
Dux only make their electric hot water systems with mild steel vitreous enamel lined cylinders.
The warranties vary from 7 years on the cylinders of the 25L and 50L systems to 10 years all above that capacity.
They require servicing every 5 years.
The electric Thermann hot water systems are manufactured by Dux Hot Water.
Made from mild steel with a internal vitreous enamel coating they have the sacrificial anode protecting it from deterioration.
They come with the same warranty periods as the DUX Proflo of 7 years and 10 years They require servicing every 5 years.
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