Water near a geyser can come from a valve, connection, overflow, drain cock, tray or the cylinder itself. The source matters: a minor fitting leak may be repairable, while a corroded cylinder can require replacement and may release a large volume of water.
Before you worry
Do not assume every drip means the cylinder has burst. Trace the visible direction of the water from a safe distance and note whether it appears only while heating or flows continuously.
How to recognise the problem
- Water stains or sagging ceiling boards.
- Dripping from valves or pipe joints.
- Water collecting in the geyser tray.
- Continuous flow from an overflow or discharge pipe.
- Rust, corrosion or moisture on the cylinder casing.
- A sudden drop in hot-water pressure.
Common causes
- Loose or failed pipe connections.
- Worn pressure or expansion valves.
- A leaking drain cock or vacuum breaker.
- Corrosion of the inner cylinder.
- Excessive pressure.
- A failed drip tray or blocked tray drain.
What you can safely check yourself
- Switch off the geyser electricity if water is near electrical components and it is safe to do so.
- Close the water supply to the geyser if the leak is significant and the valve is accessible.
- Move belongings away from the affected ceiling area.
- Photograph the leak and note which pipe is discharging.
What you should never do
- Do not stand beneath a bulging or saturated ceiling.
- Do not touch wet electrical fittings.
- Do not plug safety discharge pipes.
- Do not enter a flooded ceiling void.
When to call a plumber
Treat heavy leaking, ceiling saturation, electrical tripping or visible cylinder corrosion as urgent. Smaller continuous leaks also need prompt repair because they can worsen and waste water.
How professionals solve it
A plumber isolates the system, identifies the exact source, checks pressure and assesses the cylinder, valves, tray and pipework. Repair may involve replacing a valve or fitting, resealing a connection, repairing tray drainage or replacing the geyser.
How to prevent it happening again
- Inspect visible valves and pipes regularly.
- Keep the tray drain clear.
- Maintain correct pressure-control equipment.
- Repair corrosion and small leaks early.
- Replace ageing cylinders before repeated failures.
Frequently asked questions
Can a leaking geyser be repaired?
Many valve and connection leaks can be repaired. A leaking or badly corroded cylinder usually requires replacement.
Why does the geyser leak only when heating?
Thermal expansion may reveal a faulty valve or pressure problem during the heating cycle.
Is water in the drip tray serious?
Yes. The tray is a warning system, not a place where water should remain continuously.
Need help with a geyser problem?
Tell us what you have noticed, whether water is leaking or electricity is tripping, and the approximate age of the geyser so we can help arrange the right response.