What is a sacrificial anode?

If your storage hot water systems runs on electricity, gas or solar, it probably contains a sacrificial anode. This is a highly reactive metal component which protects the system from corrosion. Most hot water heaters use them to protect the tank and other components which spend most of their time immersed in water.

Why does the anode need to be replaced regularly?

As the name implies, the anode sacrifices itself to protect the rest of the hot water system. Most hot water systems should be serviced every two years, and replacement of the sacrificial anode, which is likely to have corroded significantly since the previous servicing, is highly recommended.

How does a sacrificial anode work?

Corrosion (or rust) is the result of electrolytic action which travels through the water and reacts with the surface of the metal at risk. A sacrificial anode works by attracting electrolytes more strongly than the rest of the hot water system, keeping other system components out of harm’s way. As well as hot water heaters, sacrificial anodes protect ships at sea, pipelines, boilers and other steel structures that are under water or in damp soil conditions where risk of corrosion exists.

Call Plumbdog for fast, hassle-free sacrificial anode replacement

Replacing the sacrificial anode is the easiest and most cost-effective way to extend the life of your hot water system. Plumbdog are experts in the replacement of all types of hot water system sacrificial anodes and can provide honest advice on all aspects of hot water servicing. Don’t risk damaging your hot water system – call Plumbdog now to book one of our qualified, experienced  hot water plumbers.

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