The most visible sign of a leak is water accumulating at the base of your unit. This could indicate a ruptured tank, loose connection, or faulty valve.
causes of leakage
Corrosion in the Tank
For storage heaters, internal corrosion over time can eat through the tank walls, especially if the sacrificial anode is depleted. This results in internal leaks that may eventually reach the exterior.
Defective Internal Components
Heaters may have faulty heating elements, thermostats, or internal seals that degrade over time and leak when the unit is active.
Faulty Pressure Relief Valve
Water heaters are fitted with pressure relief valves to prevent overpressure. A malfunctioning or stuck valve may cause continuous leaking.
Leaking Expansion Tank
If your water heater has a thermal expansion tank, it may also develop leaks due to internal wear or excess pressure.
Loose or Cracked Pipe Joints
The inlet and outlet pipes, especially in storage or multipoint heaters, may become loose due to expansion and contraction or poor installation. This is a very common source of leaks in both HDB and condo units.
Cracked or Aging Casing
The outer shell of the water heater may develop hairline cracks due to age, impact, or manufacturing defects, allowing water to seep out slowly.
detect water heater leaks
As professional plumbers, we understand that water heater leaks can lead to serious water damage, reduced heating efficiency, and higher utility bills. That’s why early detection is critical.
How we detect water heater leaks:
- Visual Inspection: Check the base of the tank, surrounding pipes, and fittings for water, rust, or corrosion.
- Pressure Relief Valve Check: Examine the T&P valve for drips or discharge that may indicate leaks.
- Pipe Joint Inspection: Inspect inlet and outlet connections for moisture, rust, or loose fittings.
- Tank Surface Inspection: Look for cracks, bulges, or rust spots on the tank body.
- Performance Check: Unusual noises, hissing, or a sudden drop in hot water supply can signal internal leaks.
By identifying leaks promptly, we ensure your water heater stays safe, efficient, and reliable, preventing unnecessary water damage and extending the life of your system.
types of water heater we service
At All Plumbing.SG, we provide accurate leak detection and reliable repair services for every type of water heater system. Whether the issue stems from worn seals, faulty valves, internal corrosion, or damaged pipe connections, our licensed plumbers use the right tools and methods to locate the leak quickly and restore your heater to safe working condition. The types of water heater we handle:
- Storage Water Heaters
- Instant Water Heaters
- Multipoint Heaters
- Gas Water Heaters
- Concealed/Wall-mounted Water Heaters
Repair solutions for water heater leaks
All Plumbing.SG specialises in water heater leak detection and repair for all types of units. Our plumbing team provides:
🔹 On-Site Inspection & Leak Detection
We use visual and technical methods to pinpoint the exact source of the leak, whether it's from the unit body, piping, joints, or internal components.
🔹 Leak Repair & Component Replacement
We repair or replace faulty components such as valves, seals, heating elements, pipe joints, and thermostats. If your heater is repairable, we make sure it runs like new.
🔹 Water Heater Replacement
If the leak is due to a corroded or burst tank beyond repair, we can supply and install a new heater of your choice—Ariston, Joven, Rheem, Champs, or Rubine.
🔹 Waterproofing & Tiling Restoration (if needed)
Leaking concealed heaters may damage walls or tiles. We offer additional services to patch up and restore affected areas.
preventing future water heater leaks
While water heater leaks can occur over time due to wear and pressure, you can greatly reduce the risk with proper maintenance and early preventive care:
🔹 Schedule annual water heater inspections
🔹 Replace old hoses, valves, and connectors before they fail
🔹 Install a pressure regulator to prevent excess strain on the heater
🔹 Ensure proper ventilation for gas or multipoint heaters
🔹 Keep the area around the heater dry and free from clutter
🔹 Replace aging heaters before corrosion or tank fatigue sets in
Let our team help you keep your water heater running safely and leak-free through regular maintenance and professional servicing.
testimonials
Yes. Leaking heaters can cause electrical hazards, mould growth, structural water damage, and even tank bursts in severe cases. Immediate inspection by a licensed plumber is recommended.
No. Using a leaking heater increases the risk of electrical short circuits, overheating, and sudden failure. Turn off power and water supply, then call a licensed plumber.
Signs like dripping from the bottom, rust trails, or moisture around the tank suggest heater issues, while water around the inlet/outlet pipes points to connection leaks. Our plumbers use diagnostic tools to confirm the exact source.
Absolutely. We supply and install storage, instant, multipoint, and concealed water heaters with proper PUB-compliant installation and workmanship warranty.
We are a certified company driven by our excellent customer service and client experiences. We are skilled, honest, reliable, and experienced in all aspects of residential plumbing. We are local and striving to make a name for ourselves within the community.
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