Discover Expert Rapid Hot Water Solutions

Posted June 5, 2023 by
Stay Connected Plumbing

Searching for the perfect water heater that caters to your household's hot water demands can lead you through a maze of choices in the market. The best-fit model will be influenced by your preferences, budget, hot water requirements, and the available space in your house.

One option that enjoys widespread popularity among Australians is the instant hot water system, otherwise known as the tankless water heater. These systems, which could be electric or gas-powered, are favored for their energy-saving benefits and compact design.

This article will provide an overview of how instant hot water systems function, the advantages and drawbacks, and essential maintenance tips to ensure optimum efficiency. This information will help you make an informed decision about whether this system is the best fit for your needs.

Understanding Instant Hot Water Systems

An instant hot water system is a water heater with an impressive heating speed and minimal storage capacity—ranging from one to three litres. Its design eliminates the need for a storage tank, as it heats water on demand.

When you open the hot water tap, cold water travels through a pipe into the heating unit and is heated by the heating element. This mechanism provides a continuous hot water supply. Contrary to traditional or storage tank water heaters, you don’t have to wait for the water to heat.

Why Should You Consider an Instant Hot Water System?

Investing in an instant hot water system should be preceded by understanding the benefits it brings to your home. Here are some notable advantages of investing in instant hot water heaters:

Energy Efficiency

A paramount advantage of instant hot water systems is their energy efficiency. An instant water heater can significantly lower your monthly utility bills as they consume less energy than traditional water heaters. They provide hot water without consuming excessive energy.

In contrast to a conventional water heating system that heats a tank containing 130 to 220 litres of water irrespective of your needs, an instant hot water system heats only the quantity you require. Consequently, it does not waste energy heating excess water.

Plus, the quick heating mechanisms of instant hot water systems allow you to save time, heating a stream of water as required.

Space Conservation

Instant hot water systems are a great space-saving solution. This is one of the appealing features that make these heaters a hit among homeowners in Australia. If your house is small, an instant water heater is the ideal choice since it does not have a bulky storage tank that consumes unnecessary space.

Their compact size also simplifies remodelling efforts as you don't have to accommodate bulky appliances during the process. This could lead to cost reductions as less work is involved.

Enhanced Safety

Home safety is a crucial aspect to consider when investing in hot water systems. Instant water heaters provide more safety compared to conventional ones. Traditional heaters could potentially overheat or even explode due to heating large volumes of water at once. In contrast, tankless water heaters hold little water, reducing the risks of explosion or overheating.

Moreover, leaks from a storage-tank water heater could inflict substantial damage on your home. Instant water heaters, however, are less prone to leaks, and if they do leak, they cause less severe water damage.

Design Flexibility

Another significant benefit of tankless water heaters is their installation flexibility. You could choose to have one heater serve your entire home or install multiple point-of-use heaters at strategic locations.

A multiple-point-of-use water heater is an ideal solution if you have several spots that need different hot water consumption, such as a kitchen faucet and two bathrooms in a small apartment.


Tankless water heaters have a longer lifespan than storage-tank water heaters. The former could last for approximately twenty years or more, while the latter typically lasts for about ten to fifteen years. Instant hot water systems might seem expensive due to their upfront cost, but their longevity makes them a worthwhile investment in the long run.

Additionally, their components are easily replaceable, which further extends their lifespan. This factor, coupled with the energy savings they provide, makes the overall cost of owning and operating an instant hot water system quite reasonable in the long run.

Factors to Consider Before Buying an Instant Hot Water System

While the advantages of instant hot water systems are compelling, it's also essential to consider some factors before making a purchase.

Initial Cost

Instant hot water systems generally have higher upfront costs than traditional water heaters. Besides the unit's cost, the installation can also be pricey, especially if it involves a significant overhaul of your existing plumbing system.


Capacity is another vital factor to consider. You should ensure the system can handle your home's peak hot water demand. If the system's capacity is too small, it might not meet your needs, especially during peak usage times.

Fuel Type

Instant hot water systems can be either gas or electric. Gas units usually have a higher capacity and can provide hot water to multiple outlets at once. However, they are more expensive and require proper ventilation. On the other hand, electric models are cheaper and easier to install but may have a lower capacity.

Maintenance of Instant Hot Water Systems

To ensure your instant hot water system functions optimally, regular maintenance is crucial. Here are some maintenance tips:

  1. Regular Inspections: Regular inspections will help identify any potential issues before they become serious problems. Check for any signs of wear and tear, leaks, or scale buildup.

  2. Cleaning and Descaling: Over time, minerals in the water can build up and impact the heater's performance. Regular descaling can help maintain the unit's efficiency.

  3. Professional Servicing: Despite regular self-maintenance, it's advisable to have a professional service your heater annually. They will check the unit more thoroughly and can fix any issues you may have missed.

Instant hot water systems can be a valuable investment for your home. By understanding their benefits, drawbacks, and maintenance needs, you can make an informed decision about whether this system is the best fit for your needs.

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