Benefits of Instantaneous Hot Water Systems

If you’re building a new home or office, or are ready to upgrade your current hot water system, we recommend installing an instantaneous system with the help of an experienced hot water plumber.

What is an instantaneous hot water system?

A traditional hot water tank stores a set amount – this could be anywhere from 90 to 300 litres, depending on the size – of hot water within it. As it is used up, cold water fills the tank to replenish it.

When the hot water is used up in a traditional tank, expect your shower or tap water to go unexpectedly cold, and to stay that way for some time while the water in the tank reheats.

Unlike a traditional hot water tank, an instantaneous hot water system won’t have you stuck in a cold shower. This modern system is designed to heat water when you need it, and to shut off when you’re not using it.

Instantaneous hot water systems are activated when you turn the water on. This action subsequently turns on the gas or electricity needed to heat the elements contained within the pipe that heat the water as it travels through.

Preset heat for safety

With a remote temperature control, you can preset the heat of the water so that it never goes above your chosen temperature. This is especially important for a home with children as it ensures that your hot water won’t burn them.


Instantaneous hot water systems are durable and long-lasting. Though they cost more than a traditional hot water tank, their lifespan is up to 10 years longer. Where a hot water tank lasts up to 10 years, an instantaneous system can last up to 20 years.


Hot water tanks need room for storage. Their bulkiness takes up a lot of space if installed inside the home, and they jut out unattractively if added to the exterior. Instantaneous systems, on the other hand, have a simple, aesthetic design that doesn’t take up much space at all.

Neverending hot water supply

The number one benefit of an instantaneous system is that you will never run out of hot water. No matter how many showers you have or hot water wash cycles you run, you’ll always have enough hot water to go around.

Is an instantaneous hot water system for you?

With all of the benefits that come with installing an instantaneous system, we think it’s definitely one to consider for your new build or upgrade.

Instantaneous systems can run on gas or electricity, and an experienced hot water plumber can advise you on the installation process that will work best for your home.

Talk to a hot water plumber about installing an instantaneous system today