For those of you who haven’t heard of it, a mains pressure hot water cylinder is a technology which heats up cold H2O faster, allows you to have multiple sources using warm H2O simultaneously, saves you money and reduces energy consumption. If you are sick of having your shower turn cold when someone else is using the kitchen tap, then you need to invest in one. Read on to find out more about this great technology and how it can improve your life.


What is a mains pressure hot water cylinder?

It is a lightweight, stainless steel technology which fits into the system in the home and improves force and flow to taps, ensuring that H2O is moved across the whole house at the same powerful rate. This makes it less influenced by multiple demands, so you can have warm H2O running through showers, taps and a washing machine at the same time without some sources turning cold.

This is compared to the old-fashioned low force system, which has a lower force and flow, and may result in H2O turning cold when another tap is turned on. To determine what kind of system you currently have, physically check it – a mains pressure hot water cylinder will be clearly labelled with what it is, whereas a low force one may not have any labels. Additionally, if your system is over 20 years old, it is probably a low force one.


What are its benefits?

The mains pressure hot water cylinder offers greater performance overall compared to the old technology. Some of the benefits include:


Stainless steel design

Compared to copper, stainless steel is more resistant to corrosion and more durable. It is also able to withstand very strong forces. As a result, a stainless steel mains pressure hot water cylinder will have a longer lifespan than its low force, copper counterpart.


Large amounts of warm H2O

A mains pressure hot water cylinder can hold a larger volume of warm H2O than the older models; they hold around 180 litres, whereas low force models hold much less.


Fast delivery of powerful, warm H2O

Perhaps the greatest benefit a mains pressure hot water cylinder can offer is its ability to release a strong flow of warm H2O – think around the same force as when it is cold, if not more! This means no more trickles, and more pleasant shower experiences.

Additionally, its ability to reach all your taps at once with the same force and temperature means that you can operate multiple taps at the same time without a difference in temperature. This means you can avoid your shower turning cold when someone else is using the warm H2O.


Lengthy warranty period

Compared to low force systems, a mains pressure hot water cylinder tends to have a longer warranty length – around 15 years longer! This gives you added peace of mind; if anything goes wrong, it can easily be replaced.


Compatible with modern taps

For those planning on renovating, a mains pressure hot water cylinder will be compatible with your new taps and any new systems you might want to install. There is also a far greater range of tapware available for high force systems compared to low force ones.


How much does it cost?

The cost for both purchasing and installing the new technology generally costs around $1000-2000 (AUD) in total. A mains pressure hot water cylinder is made of stainless steel and costs more than a low force one. Additionally, you may need a fresh set of valves.

Despite the hefty set-up price, the new technology tends to be more cost effective in the long-run. It is more efficient at warming and saving energy, which means you’ll benefit from paying less on your energy bills. Typically, around a third of electricity bills are spent on warming up H2O – but with this technology, you can reduce this amount!


Should you get it?

If you can afford the upfront cost, definitely! The difference in systems is particularly evident in large family homes where multiple people are frequently using taps at the same time. If you are building a new house or are renovating, this is a great time to invest in the new system. You should notice more pleasant showers and less yelling and stress as a result.

It is also important to check your system regularly to ensure it is working well. Identifying issues early can help to prevent damage caused by issues such as slowly leaking H2O. If your system needs replacing, consider getting a mains pressure hot water cylinder.



The new technology offers a range of benefits which can improve your home and you and your family’s quality of life. It may also save you money in the long-term.


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