How To Repair Hot Water System Leaks?
Signs Your Hot Water System is Leaking
Some hot water leaks are obvious, while others take time to develop and can go unnoticed for days, weeks or even months.
- Water is pooling around the base of your tank
- Dripping pipes or valves
- Reduced hot water pressure
- Rusty water
- Damp smells near your hot water system
- Increased water bills
Common Causes of Hot Water System Leaks
There are several reasons why your hot water system is leaking. Some problems are simple and easily fixed, while others are more complex and indicate that your unit is at the end of its lifespan.
Pressure Relief Valve (PRV)
As the name suggests, pressure relief valves (PRV) are designed to relieve pressure in your hot water system if it gets too high. A small drip occasionally is normal due to the heating cycle; however, constant leaking can point to:
- High and excessive water pressure
- Sediment buildup inside the tank
- Faulty pressure relief valve
- Heating and thermostat issues
Loose Pipe Fittings
Over time, pipe fittings and water connections loosen due to age, vibration or fluctuating water pressure. Loose fittings are one of the most common causes of small hot water leaks and can often be fixed quickly.
High Water Pressure
Excessively high water pressure puts stress on your hot water system, pipework and valves. Over time, this pressure builds up and leads to leaks, damaged pipes and tank failure if not checked quickly.
Damaged and Rusty Hot Water Tank
Rust and corrosion are serious issues, and the only option is replacing it. The tank’s structural integrity is compromised and a simple patch isn’t a long-term solution.

What’s The Average Lifespan of Hot Water Systems
The lifespan of your hot water system depends on the make, model and type of your system. It also depends on how often you maintain it and the quality of your home’s water.
As hot water systems age, their internal components wear down, increasing the likelihood of leaks, efficiency problems and unexpected breakdowns. Knowing the average lifespan of your hot water system can help you decide whether repairing or replacing your system is the better choice.
Electric Hot Water Systems: 8 - 12 years
Gas Hot Water Systems: 8 - 15 years
Continuous Flow Hot Water Systems: 15 - 20 years
Heat Pump Systems: 10 - 15 years
Solar Hot Water Systems: 10 years
Remember that scheduling regular maintenance is a worthwhile investment, as it helps to prevent emergencies and expensive breakdowns.
What Should I Do If I Notice My Hot Water System Is Leaking?
If your hot water system is leaking, acting quickly is imperative. Acting swiftly helps to minimise water damage, reducing the risks of major repairs and mould and mildew growth. Following the right steps and not panicking keeps your home safe while you wait for our licensed plumbers to arrive.
Identify Where the Leak is Coming From
First, check where the leak is coming from. Common leak locations include:
- Pressure relief valves
- Drainage valves
- Pipe connections and fittings
- Around the base of the tank
Leaks coming directly from the storage tank often point to internal corrosion and you need a full hot water system replacement.
Isolate the Water from your hot water system
Turn off the cold water isolation valve that’s connected to your hot water system. This helps to stop additional water from entering the system and reduces the risks of further leaks.
Turn off your hot water system
To avoid electric shocks, overheating and pressure build-up, you must:
- Switch off the electricity at the switchboard for electric hot water systems
- Turn off the gas supply and gas valve for gas hot water systems
Call our Qualified Hot Water Specialists
At Evermore Plumbing, we provide comprehensive hot water repairs all over Brisbane. Our team of experienced and professional plumbers have seen it all from small leaks to major system malfunctions and are equipped with the tools and knowledge to get the job done ASAP.
Same Day Hot Water Repairs Across Brisbane
If your hot water system is leaking and you don’t know what to do, it’s best to call one of our licensed, insured and professional hot water plumbers. With over 10 years of industry experience, our team are always here to help, wherever you live in Brisbane.
