Repair a water heater tank that’s leaking

water heater tank leaking

Is your hot water heater tank leaking? We can help.

We recently received a call from a customer located in Manly (Northern Beaches Sydney) whose water heater had started leaking.  With all the rain we’d been having in Sydney recently, they didn’t noticed the excess water. It was only when they started running out of hot water that they checked their water heater and discovered the leak.

Northern Beaches hot water specialist, John, was working on another customer job in the area so was able to attend the property quickly. While the leak wasn’t at ‘emergency hot water repair‘ level – yet – it is usually a sign that can become significantly worse very quickly.

If you discover a leak from your water heater, it can be a warning sign.  We recommend you contact us as soon as possible for advice.

Corrosion was likely the cause of the water heater tank leaking.

Once onsite, John could see that the cause of the customer’s old Rheem160L electric hot water system leaking was most likely due to tank corrosion.

Over time, a water heater’s tank can corrode due to minerals in the water, leading to small holes or cracks where water can leak out. Early detection of tank corrosion can prevent leaks from occurring.  We recommend you get your hot water heater serviced every 5 years to detect and rectify problems before they lead to catastrophic breakdown or a burst water heater. Scroll down to read common reasons why water heaters leak.

To book a hot water service, call or text us on 0410 693 532 to reserve a time.  A hot water service typically only takes 45 minutes and is a small price to pay for trouble-free hot water.

Unfortunately, when a water heater tank starts leaking due to corrosion it is often beyond economical repair because modern water heaters aren’t manufactured for the tank to be replaced or repaired.  The installation of a new hot water heater is the only solution.

Leaking water heater replacement

John discussed replacement water heater options with the customer and they opted for a new Rheem 160 litre electric hot water system (model:491160).  Their old Rheem hot water system had provided reliable, trouble free hot water for the past 15+ years. Additionally, the new 160 litre tank could be installed in the same location.

rheem electric hot water system 160 litre 491160

Benefits of the Rheem electric hot water system (model: 491160)

The new Rheem water heater features a twin element for faster heating and is perfect for households that need an extra boost of hot water.  If someone is taking a shower at the same time they want to run the washing machine, they will appreciate the extra hot water that having an extra element provides.

The Rheem 491160 is designed to be energy-efficient and the customer will now save on their energy bills whilst reducing their carbon footprint. , helping you save on your utility bills while reducing your carbon footprint.

Additionally, the new Rheem water heater features a vitreous enamel tank and a heavy-duty anode for corrosion protection.  This water heater is designed to last! The 12 year cylinder warranty* of the new hot water system offered further peace of mind (*warranty conditions may apply).

After draining and disconnecting the customer’s old Rheem electric hot water system, he installed the new one back in the same location.  He then cleaned up the site and took away the old tank for recycling.  Within a few hours, the customer was back enjoying trouble free hot water again.

Leaking water heater?

For fast assistance for the repair or replacement of a leaking water heater, contact us for advice. Our trucks are on the road right now, stocked with thousands of spare parts and replacement water heaters, to get you back enjoying trouble free hot water quickly. We supply and install a large range of gas, solar, electric and heat pump water heaters.  Upgrade to a new energy efficient hot water system and you may be eligible to claim the generous Government rebates currently available.


Common reason a water heater tank is leaking

1. Water heater tank corrosion

Over time, the tank can corrode due to minerals in the water, leading to small holes or cracks where water can leak out.

Early detection of hot water tank corrosion can prevent leaks from occurring.  We recommend you get your hot water heater serviced every 5 years to detect and rectify problems before they lead to catastrophic breakdown or a burst hot water heater.  To book a hot water service, call or text us on 0410 693 532 to reserve a time.  A hot water service typically only takes 45 minutes and is a small price to pay for trouble-free hot water.

2. Leaking pressure relief valve (PRV)

The PRV is a safety feature designed to release excess pressure in the tank to prevent explosions. If it’s faulty or malfunctioning, it can cause leaks.

The pressure relief valve in a hot water heater is a safety device that prevents the tank from rupturing or exploding due to excessive pressure build up. The pressure relief valve works by opening and releasing water from the tank when the pressure inside the tank exceeds a certain level.  This level is usually around 150psi however can vary depending upon the model and age of the hot water heater. If the pressure inside the hot water heater gets too high, the pressure relief valve opens, allowing water to flow out of the pipe and away from the tank.  The pressure inside the tank is relieved.

3. Temperature and pressure relief valve (TPR valve)

Similar to the pressure relief valve, the TRP valve releases water if the temperature or pressure inside the tank becomes too high. If it’s faulty or malfunctioning, it can cause leaks.

The temperature and pressure relief valve (TPR valve) in a hot water system is an important and necessary safety feature with it’s main function being to release excess pressure and temperature from the water heater tank to prevent a catastrophic failure or explosion.

4. The hot water tank is failing due to old age

Like any appliance, hot water heaters have a lifespan. As they age, they are more prone to develop leaks due to wear and tear.

In many cases, older hot water heaters can be repaired.  Sometimes, the hot water heater is too old and is beyond economical repair. If this is the case, hot water heater replacement is necessary.

For fast hot water heater replacement, call or SMS our friendly team for assistance on 0410 693 532 . Our trucks are on the road right now, stocked with replacement hot water heaters so you’re back enjoying trouble free hot water quickly.

5. Sediment build up at the bottom of the tank

Sediment can accumulate at the bottom of the tank, causing corrosion and weakening the tank’s structure, leading to leaks.

Anodes are steel core rods installed at the top of the hot water tanks during production to prevent rust and corrosion. Anodes typically last between 3.5 – 5 years.Once the anode has fully spent it fails to protect the tank which will start to deteriorate. In time, a rusting water heater will cause problems which are typically more expensive to repair than simply replacing the anode. Regular anode replacement ensures your water heater continues to operate as intended and lasts longer therefore saving you money in the long term. If your water heater is over 3.5 years old, we suggest you contact us and we can advise whether your anode may require replacement. Call or text us on 0410 693 532 for advice.

6. Loose pipes and fitting connections

Sometimes connections of your hot water heater like pipes, fittings and or valves can become loose, causing leaks. If your pipework or fitting connections are loose and you’re not confident tightening them yourself, contact us for advice.  We can organise a service call-out and rectify any problems.  Call or text us on 0410 693 532 for advice.

7. Damage to the tank or cylinder

Physical damage to the tank from external sources or internal issues like excessive pressure can cause leaks.

8. Internal component or part failure

Components such as the heating element or the tank’s internal lining can degrade or fail, leading to leaks.

The purpose of the element in a hot water system is to heat the water. The element is located inside the hot water tank and, when electricity is applied to it, the element gets hot and heats up the surrounding water. To ensure the water doesn’t get too hot or the hot water system doesn’t overheat, the element is controlled by a thermostat.

9. External condensation

And finally, sometimes condensation can form on the outside of the tank, especially in humid environments, which can be mistaken for a leak. If you suspect condensation, wipe down the area that’s leaking and monitor it to see if the leak continues. If you’re still concerned or have questions, contact us for advice. We’re here to help.

Need hot water heater assistance?

For fast assistance for the repair or replacement of a leaking water heater, contact us for advice. Our trucks are on the road right now, stocked with thousands of spare parts and replacement water heaters, to get you back enjoying trouble free hot water quickly. We supply and install a large range of gas, solar, electric and heat pump water heaters.  Upgrade to a new energy efficient hot water system and you may be eligible to claim the generous Government rebates currently available.


cheapa hot water sydney

Cheapa Hot Water Sydney

Hot water is our business – it’s not a sideline. Each year we repair and install hundreds of hot water systems in homes and businesses across Sydney.

  • We offer free delivery of your new hot water system and complimentary disposal and recycling of your old water heater.
  • As one of Sydney’s largest hot water system suppliers, our enormous buying powers and ability to buy direct from the manufacturer means we can pass attractive savings on to our customers.
  • Our fully qualified, licensed hot water heater installers have over 25+ years of experience each. We are fully insured and pride ourselves on our old-fashioned customer service.
  • We are accredited service agents for all the hot water heater brands including RheemDux, Rinnai, Aquamax, Bosch, ConergyHockingApricusVulcanEdwards SolarSolahart, Everhot and more.
  • We are qualified to undertake all the plumbing and electrical work required to install a new hot water system. There is no need to waste time and money employing multiple trades.
  • We have all the equipment needed to install your hot water system today. We don’t have to hire or wait for other trades to arrive with the required equipment.

Did you know that often the repair and installation of a hot water system requires the expertise and qualifications of both a licensed plumber and a licensed electrician?

We are qualified to undertake any plumbing and electrical work required to ensure your hot water heater is repaired quickly and within budget. Plumbers who do not specialise in the installation of hot water heaters may need to outsource the electrical work required to another tradesperson, thereby holding up your hot water system repair or installation, adding extra expense due to additional call-out fees charged by employing two tradespeople.

Your hot water heater is an expensive appliance. Don’t risk voiding your warranty.

Additionally, most manufacturers won’t cover the terms of your hot water system warranty if it isn’t installed by a licensed hot water technician or a qualified plumber. Hot water tanks are an expensive appliance so why would you risk voiding your warranty by installing it yourself or employing the services of someone who isn’t licensed?

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