Instantaneous Hot Water System

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Instant Hot Water System

If you’re thinking of switching to an instant hot water system, or need your current one repaired or serviced, look no further than your hot water experts, Jim’s Plumbing.

Our licensed and qualified plumbers are caught up in all the latest hot water technology, and can advise you on what’s best for your home. If that so happens to be an instant, or also known as instantaneous or continuous flow hot water system, then so be it, we’ll do it all for you.

What Is An Instantaneous Hot Water System?

Instant hot water systems have become one of the most popular hot water solutions in Australia. This is due to many factors. These systems are quite small and don’t take up a lot of room on your property. More often than not they are a small box that is mounted on an exterior wall of your house, completely out of the way and out of sight. They are then hooked up to either gas or electricity as their power and heat source.

They work by only heating water as you need it, basically on demand. This is much more efficient than your storage hot water systems because you aren’t constantly using energy to keep water hot, rather just heating it when needed. The big benefit here is that you’ll never run out.

Instantaneous Hot Water System Service

Jim’s Plumbing is happy to assess your current hot water system and then advise on installing a new instant hot water system in its place. We can also repair your current one if it is experiencing problems, or we can go general maintenance check-ups to make sure everything is running fine.

Jim’s Plumbing can do this 24/7 for your convenience. If you run into a hot water emergency, such as having none of it on a cold wintery morning, or you’ve got a leak that is wasting water by the second, we can get to your house within the hour.

We won’t ever charge you any extra for an out of hours service as well, its standard rates at all times with us.

With $0 deposit, interest free payment plans, there’s no reason you shouldn’t call Jim’s Plumbing today for your next instantaneous hot water job.

Contact us for any questions, more information, or to book.

What is a Continuous/Instantaneous hot water system?

Nowadays we are seeing a shift away from traditional storage hot water systems towards instantaneous, or continuous flow hot water systems, also sometimes referred to as a tankless hot water heater.

If you currently have a continuous flow hot water heater that requires a repair or a replacement, or perhaps would like to upgrade or newly install a continuous flow hot water system? Then call the hot water experts from Jim’s Plumbing.

We have NO INTEREST EVER* payment plans available and have a plumber on call 24 hours a day, 7 days a week, including all public holidays.

No Interest Ever!* Payment Plan Options Available

No Interest Ever!* payment plan options available on hot water heater replacements to help ease any financial stress this burden may cause. If your hot water heater is leaking, or you have no hot water, we can often have a plumber to you within the hour*.

A traditional storage hot water system stores a limited amount of hot water within the tank, as shown in figure 1.1. As this hot water is used, cold water then enters the storage tank to replace it. Reheating continues after the flow of hot water has ended. Storage systems take time to re-heat water, and can result in periods of cold water if you are using a large amount of hot water in a short period of time (depending on the size of the storage tank). Often storage systems can be less expensive to purchase than an instantaneous hot water system, which is why some people choose to continue to use a storage hot water system.

Figure 1.2: Instantaneous Hot Water System Image

In contrast, figure 1.2 shows how an instantaneous hot water system is used. The system is designed to heat water only at the time it is being used, rather than storing water for later use – which is a much more efficient way as energy is not wasted heating any stored water to keep it at a constant set temperature. When hot water is turned on, for example when a tap is turned on in the home, and an instantaneous hot water system is in use, the water flow activates a valve or switch that causes gas or electricity (depending on the type of instantaneous system installed) to flow to heat water as it passes through a heat exchanger. When a hot water tap is turned off, the flow of water ceases and the unit shuts off. As a result, hot water is continuous – so you have a more reliable and efficient hot water system for your home or office that will provide you with hot water ‘on demand’.

Instantaneous hot water system

Why choose an Instantaneous hot water system?

There are several reasons why an instantaneous hot water system might be the better choice for your home or office, instead of a storage hot water system. Firstly, the system is a continuous flow of hot water, so your system will be more reliable – and you can have hot water for longer. In addition to this, instantaneous systems will take up less room – whether installed internally or externally to your home or office as they are compact in size and can often be installed inside a recess box on an exterior wall of your property. Storage systems tend to take up much more space as they require more room due to their required storage cylinder.

Another exciting feature available as an optional extra with many models of continuous flow hot water heaters are temperature remote controllers. These remote controllers allow you to pre-set your desired water temperature for different areas within your home. This eliminates the need to constantly fiddle with the hot and cold taps to reach your perfect hot water setting and greatly reduces the risk of scalds or burns to young children, the elderly or the mobility impaired.

What types of Instantaneous hot water systems are available?

Instantaneous or continuous flow hot water systems are becoming more and more popular, and a number of leading brands are manufacturing these systems.

Choosing the Best Instantaneous Hot Water Brands

We recommend the following instantaneous hot water systems:







…..AND MORE! If you have a preferred hot water system brand that is not listed here – we can order and install it for you!

Simply book a plumber online now by clicking this link, or phone 1300 133 509 to book now.

Choosing the Correct Hot Water System

Choosing the correct hot water system can be difficult, as there are so many options to choose from; Click on the links to find out more about these systems.




Heat Pump


Gas boosted solar

Simply book a plumber online now by clicking this link, or phone 1300 133 509 to book now.

*NO INTEREST EVER!* PAYMENT PLAN, “Fees, terms and conditions apply”.

No Interest Ever!* Payment Plan offered through Certegy Ezi-Pay Express. No Interest Ever on your hot water heater replacement or new supply and installation, gas service, water service or drain replacement.

Information on this page is subject to change. Commercial hot water systems are also available on enquiry.

*Conditions apply