How long should it last?
A traditional storage tank water heater is designed to last around 10 - 12 years. With the right maintenance, though, you can often stretch that lifespan by another 5 - 10 years. Think of it like servicing your car – a bit of regular upkeep helps prevent expensive breakdowns down the track.
The role of the sacrificial anode
Its job is to attract the naturally occurring chemicals and minerals in your water that would otherwise attack the tank itself. Over time, the anode corrodes so the tank doesn’t. If you have the anode replaced roughly every five years – and book in an annual service – you’ll give your heater a much better chance at a longer, healthier life.
Signs the anode may need attention
Not sure if it’s time for a replacement? Keep an eye (and ear) out for these tell-tale signs:
- Unusual noises – loud or repeated popping and rumbling when the heater fires up can point to hardened mineral sediment or early corrosion.
- Age factor – if your heater is more than five years old and the anode has never been replaced, it’s worth having it checked.
- Rusty or discoloured water – this can indicate the anode has worn away, leaving the tank itself vulnerable to corrosion.
- Visible wear – cracks, rust or corrosion on the outside of the tank are never a good sign and should be inspected quickly.
A little care goes a long way
Your water heater quietly works away every single day. Give it some love with regular maintenance, and it will reward you with years of reliable service – saving you the shocks from cold showers and big repair bills!
