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Electrical Storage Hot Water Systems

Electrical Storage Hot Water Systems comes in many different models and capacities. Essentially, this is a well-insulated tank, or a boiler designed to store hot water. Generally, domestic hot water storage tanks store water ready to be boiled when demanded. Some systems can only be used to store hot water.

How do gas storage hot water systems work?

  • Numbers1 Cold water travels into the tank via pressure
  • Numbers2 The cold water is heated by heating elements through electricity
  • Numbers3 As the water heats up, it rises to the top of the tank where it is tapped off for use around the house

Most hot water tanks have a thermostat built in to set the water temperature. As the water gains more pressure while being heated, a temperature and pressure valve, and an overflow pipe allows excess water to leak out. This way the tank will not be damaged from excessive pressure.


Types Of Storage Tanks

Mild steel ​

Most tanks are made with mild steel and is not entirely waterproof. This means any exposed steel can still be corroded so a sacrificial anode is installed in these tanks. Sacrificial anode refers to an aluminium/magnesium wrapped steel core wire which will corrode in place of the tank – hence ‘sacrificial’. However, once the rod is entirely corroded, other steels parts of the tank will start to rust. The sacrificial anode is replaced every 5 years to prevent major tank faults.

Stainless steel​

Designed to withstand weather and other environmental impacts to prevent corrosion which also means it does not have a sacrificial anode to deal with corrosion concerns. Generally, this means stainless steel tanks are more expensive than mild steel ones.

Electric vs Gas


  • Relatively cheap to setup however more expensive to run
  • Can be installed indoors or outdoors with no other requirements
  • Off-peak electricity is much cheaper to run but require a larger tank to be heated to last you all day (some homes don’t have access to off-peak electricity)
  • Electric ignition is more economical, but in a blackout, you can lose your hot water supply.


  • Cheaper than electricity to run
  • Usually installed outdoors for ventilation requirements but can also be installed indoors with a flue
  • Liquid petroleum gas (LPG) bottles can be used instead of natural – however running costs would increase
  • Gas water heaters have an energy efficiency star rating

Pros & Cons


  • Storage tanks provide hot water without taking a long time
  • Consistent temperature while hot water remains in the tank


Some of our hot water partners include

If you’re looking to install, or you have an issue with your hot water tank system, give us a call at 02 8061 5023 now for more information. 

Our qualified and experienced plumber will be able to do a home inspection to assess what the best option would be in your home.

Super saver


off any hot water system

Limited time only, ends July 31st 2020.
Not to be combined with any other offer.

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Our simple process to getting your hot water fixed quickly

  • Numbers1 Call us on 8061 5023 and speak to our friendly team, or request an appotiment through our online booking form.
  • Numbers2 We’ll send a qualified plumber to your home or workplace to assess the problem and give you the options on what is involved from a basic service, a repair or a replacement which comes in different brands.
  • Numbers3 We'll fix your hot water system. On your authorisation of the quote, we can get your hot water up and running right away. Our trucks are fully stocker, with a large range of spare parts, saving you important time.
  • Numbers4 Give us the thumbs up, we want you to be 100% satisfied and spread the work with your neighbours.

Ask us for help with...

Any of your household plumbing  emergencies and more, some of the areas we specialise in include:

drain repairs

Blocked drains

sink repairs

Tap repairs

toilet repairs

Toilet repairs

drain pressure

Drain pressure cleaning (Jetters)

Some of our hot water partners include
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Get an Alliance technician to help with your hot water and blocked drains today.

We believe in doing things the right way, not the easy way. Installation matters, we we believe in picture perfect installation to make sure your investment lasts longer and uses less energy.

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