Stains, rust marks or damp patches around the base of a water heater or geyser can be early signs that the unit is leaking or starting to corrode. Even small, slow drips can cause damage to floors, cupboards or nearby walls over time.

If you notice crusty mineral deposits on joints or valves, or rust-coloured streaks down the side, the system may be reaching the end of its life or need servicing. Ignoring these hints can lead to sudden failure – anything from no hot water to a major leak that floods the area.

Regularly glancing at the base area when you’re nearby – maybe once a month – helps you catch these signs when they’re still manageable.

Water heaters quietly do their job in corners we rarely examine. A quick visual check now and then is cheap insurance.