Ah the humble hot water system – a true unsung hero of our daily lives. Whether it’s that rejuvenating morning shower or a well deserved soak in the tub after a long day we owe it all to our trusted hot water system.

But did you know that not all hot water systems are created equal? In the bustling city of Perth we’ve got options galore – from gas and solar to instantaneous systems. Join us on a deep dive as we navigate the hot water seas, comparing these systems to help you make the best choice for your needs.

Introducing Gwen Plumbing – the leading authority for all things related to hot water systems in Perth.

gas and solar to instantaneous systems

With a reputation built on trust, reliability, and outstanding service, we are your go-to experts for the installation, maintenance, and repair of hot water systems.

Whether you’re considering a gas, solar, or instantaneous hot water system, our experienced team can guide you through the process. From helping you choose the right system for your needs to ensuring it’s installed correctly and running efficiently, we’re with you every step of the way. And when it comes to maintenance and repairs, our skilled technicians are just a phone call away, ready to ensure your hot water system is always in top-notch condition.

At Gwen Plumbing, we pride ourselves on offering top-tier service and state-of-the-art products. When you choose us, you’re not just getting a hot water system; you’re getting peace of mind. So, for all your hot water system needs, look no further than Gwen Plumbing – Perth’s trusted name in plumbing and hot water systems.

Hot Water Systems 101

Before we embark on our journey let’s ensure we’re all on the same page. Hot water systems work by heating water and storing it for use or in the case of instantaneous systems, heating it on demand. The heart of any hot water system is the heater, usually powered by gas, electricity or the sun’s radiant energy.

The Gas Hot Water Systems

First up, we have the gas hot water systems – the old reliable of the bunch. These systems use natural gas or propane as a heat source making them a consistent and dependable option.

Advantages: Gas systems are like that dependable friend you can call up anytime. They offer a reliable hot water supply and are generally cost effective over the long run.

Disadvantages: On the flip side they’re not exactly Mother Nature’s best friend with higher greenhouse gas emissions than their solar counterparts. Additionally they require a gas connection which can be a drawback in areas without easy access to gas infrastructure.

Gas Hot Water Systems

The Solar Hot Water Systems

Next, let’s turn our gaze upwards to the solar hot water systems. These green machines harness the power of the sun, warming your water with rays of sunshine.

Advantages:Their environmental benefits are top notch. Plus with Perth’s generous sunlight they can lead to significant long term cost savings.

Disadvantages:However, their upfront costs can be a bit of a sting and let’s not forget those few overcast days when the sun decides to play hide-and-seek.

Solar Hot Water Systems

The Instantaneous (Tankless) Hot Water Systems

Finally, we arrive at the instantaneous hot water systems the ‘now-you-see-it-now-you-don’t’ magic trick of the hot water world.

Advantages:They’re compact and energy-efficient, heating water on demand and saving you from paying to keep a tankful of water hot all day.

Disadvantages:Yet, they come with higher upfront costs and may have limitations in hot water supply if multiple outlets are used simultaneously.

Tankless Hot Water Systems

Charting Your Course: Choosing the Right System

Choosing the right system depends on your unique needs. Consider your budget, your environmental concerns and your daily hot water usage. For those in Perth, here are some options with their installation costs for reference:

  • Gas Storage: from $1429
  • Instant Gas: from $1189
  • Electric Storage: from $965
  • Energy Saving: from $2325
  • Instant Electric: from $935
  • Solar: from $2990
  • Heat Pumps: from $2390​

Please remember, these figures  vary based on the specific make and model of the system, the installation and usage requirements, and local conditions like weather and energy prices. The figures are only an estimate for the purpose of this article.

Face-Off: Comparing the Systems

Now, let’s put these systems head-to-head.


Gas Hot Water Systems

Provides hot water on demand. Reliable in most conditions​

Instantaneous Hot Water Systems

Provides hot water on demand. Will never run out as long as there’s fuel (gas or electricity, depending on the system)

Solar Hot Water Systems

Performance can be affected by sunlight availability. Usually includes a gas or electric booster for insufficient solar energy.


Gas Hot Water Systems

Lower upfront costs but higher running costs. Installation can range from $1429 to $2325

Instantaneous Hot Water Systems

Can be expensive to install but have lower running costs. Installation can range from $1189 to $1499

Solar Hot Water Systems

Highest upfront cost but can have very low running costs if you get enough sunlight. Installation starts from about $2990

Environmental Impact

Gas Hot Water Systems

More energy-efficient than electric systems but emit greenhouse gases when gas is burned.

Instantaneous Hot Water Systems

Environmental impact depends on the fuel source. Gas systems emit greenhouse gases, while electric systems’ impact depends on how the electricity is generated.

Solar Hot Water Systems

Lowest greenhouse gas emissions, especially if you get enough sunlight to rarely need the booster

Please remember, these figures can vary based on the specific make and model of the system, the installation and usage requirements, and local conditions like weather and energy prices.


And there you have it, folks – a quick dive into the world of hot water systems in Perth. Whether you’re a gas devotee, a solar enthusiast, or an instantaneous aficionado, there’s a hot water system out there for you.

So go forth, make your choice, and enjoy the bliss of a perfectly heated shower, courtesy of your chosen hot water system!

shower with hot steam