If you notice water leaking from your hot water system in your Mandurah home, immediate action is essential to minimise damage, avoid safety risks, and prevent higher repair costs. A leaking hot water system can indicate anything from minor valve issues to serious tank failure. This guide outlines the key steps homeowners in Mandurah should take when dealing with a leaking hot water unit.
1. Identify the Source of the Leak
Start by inspecting where the leak is coming from. The most common sources include:
- Pressure Relief Valve (TPR valve) – Often leaks a small amount of water, especially during heating cycles.
- Cold Water Inlet or Hot Water Outlet – Leaks at pipe connections may be due to loose fittings or corrosion.
- Tank Body – Leaks from the cylinder often suggest internal corrosion or structural damage, especially in older systems.
- Drain Valve – This valve at the base of the tank may be faulty or not closed properly.
- Storage Pan or Ground Around the Unit – Standing water without visible drips could indicate an internal leak.
Correct diagnosis helps determine whether the issue is repairable or if a full system replacement is needed.
2. Turn Off Power or Gas Supply
For safety, shut off the power or gas before inspecting or attempting to control the leak:
- Electric System – Locate the circuit breaker and turn off the hot water system’s power.
- Gas System – Turn off the gas valve near the unit or at the gas meter if needed.
This prevents electrical hazards and further heating of water, which could worsen the leak.
3. Shut Off the Water Supply
To limit flooding or water damage, isolate the water supply to the unit:
- Find the cold water isolation valve (usually a blue lever or tap) near the base or top of the system.
- Turn the valve clockwise to stop water entering the unit.
This reduces pressure on the system and halts further leakage until a technician arrives.
4. Call a Plumber
Contact a qualified plumber in Mandurah. A licensed plumber can:
- Diagnose the issue accurately.
- Repair or replace faulty components (valves, pipework).
- Advise whether a full unit replacement is necessary based on age, condition & efficiency.
Hot water systems generally last between 8–12 years. For systems older than this, ongoing issues may indicate it’s time for an upgrade.
5. Avoid Temporary DIY Fixes
Temporary sealing or patching can lead to larger failures, water damage, or voided warranties. Mandurah homeowners should avoid:
- Using sealants or waterproof tape.
- Tampering with internal components.
- Ignoring the leak, even if it appears minor.
Professional inspection ensures compliance with Australian plumbing standards and safeguards home insurance claims.
6. Consider Replacement if System Is Aged or Corroded
If the leak is from the tank or if rust, sediment, or age-related wear is evident, replacing the unit may be the most practical solution. Plumbers in Mandurah can advise on suitable replacements, including:
- Electric storage systems
- Gas storage systems
- Instantaneous gas or electric systems
- Solar hot water units with gas or electric boosters
- Heat pump systems
Energy-efficient models may also qualify for government rebates or local incentives.
7. Clean Up Water Damage Promptly
Even a small leak can cause mould, structural damage or slip hazards. Homeowners should:
- Mop up any standing water.
- Use fans or dehumidifiers to dry out affected areas.
- Check walls and floors for signs of dampness or deterioration.
Addressing water damage early reduces long-term costs and helps maintain a safe home environment.
Conclusion
A leaking hot water system in your Mandurah home should never be ignored. Quick action—identifying the leak, isolating water and power, and contacting a licensed hot water plumber Mandurah that residents trust—helps protect your property, ensures compliance, and may even save money in the long run. If your system is ageing or frequently faulty, consider replacing it with a more efficient, modern unit tailored to your household needs.
