The Age of Continuous Flow Hot Water Heaters






Do any of these brands ring a bell?  One or two of these names you may have heard of, but the others most likely not. How can you make the best decision of which continuous flow hot water heater to choose if you are not aware of some of the available choices that exist on the market?

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Well the inner workings of hot water systems are made to heat up the water- right? Yes, but there is a point where it can be too much and actually damage your heater.

Why is it bad for your hot water heater to overheat?

Waters at high temperatures are potentially dangerous as hot water obviously burns, but can also be dangerous to your hot water heater. If the hot water boils over or even overheats more than what is recommended in your cylinder it can dramatically reduce the life expectancy of your hot water heater.

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What is a hot water anode? How does it work?

What is an anode and why is it so important?

Water heaters have anodes in them to protect them against rust.

All mains pressure, storage water heaters, other than those made from stainless steel, are constructed from 2 to 3 mm thick mild steel which has been coated on the inside with vitreous enamel similar to that which is used to rust-proof barbeques. They are never made from glass or fibreglass. Any misunderstanding here stems from the industry term “glass-lined which is commonly used to describe this type of tank.

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Hot Water Systems generally last around 8-10 years give or take. Did you ever wonder how to tell the age of your hot water heater?

Most water heaters have an identifying sticker, or label, detailing the heater’s capacity, model and serial numbers plus details relating to its operation. This sticker will show the date of manufacture of the heater and a close estimate of when it was installed will be two or three months after this date.


This is the technology that utilizes the principle that hot water rises. As you can see in this picture water moves according to temperature differences within the system. As the water heats up it becomes less dense which causes it to rise up through the collector. There is no need for pumps or controllers as the storage tank is installed above the collector allowing the hot water to flow into the tank.

There are so many hot water systems available on the market today. While it is nice to have so many options, there may be one factor in particular that is of interest for you that will help you decide which hot water system best suits your needs. One of the top factors would most likely be running costs. The New South Wales Government Office of Environment compiled a helpful comparative table regarding the running costs of heaters based on different factors. Hyperlink