What is an Instant water heater?

An Instant water heater is a practical and efficient solution for producing domestic hot water. This type of water heater heats water on demand, eliminating the need for a storage tank. Unlike traditional storage water heaters, which keep a reserve of heated water in a tank (often referred to as a "hot water cylinder"), the Instant water heater provides hot water only when it is needed, using a high-power heating element.

How Does an Instant water heater Work?

Unlike storage water heaters, an Instant water heater heats water directly as it flows through the system, without storing it in a tank. The water is quickly brought up to the desired temperature by an electric heating element, making this solution highly responsive. Thanks to its compact size, it is typically installed close to the point of use, such as beneath a sink or inside a shower. However, because of its limited flow rate, it is not suitable for simultaneous use across multiple taps or for high-demand scenarios like filling a bathtub.

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Advantages of an Instant water heater

  • Serves Remote Water Outlets:
    This type of water heater is ideal for providing hot water to remote or rarely used taps, such as in garages, guest rooms, or outbuildings. It removes the need to store large volumes of stagnant water for extended periods, avoiding the cleaning required when unused for too long. Also, its compact design makes it easy to install even in small spaces, and the only requirement is an electrical power source.
  • Energy Efficiency:
    The Instant water heater only uses energy when hot water is needed. Additionally, it minimizes water wastage by being installed near the point of use, reducing the time it takes for hot water to reach the tap.
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  • Easy Installation:
    One of the key benefits of an Instant water heater is its straightforward installation. The small size allows it to fit in tight spaces, such as under a sink or within a cupboard. This makes it a practical option for isolated locations requiring occasional hot water access.

Disadvantages of an Instant water heater

While this type of water heater has many advantages, there are some limitations to consider:

  • Limited Flow Rate:
    An Instant water heater is best suited for single-point use. If multiple taps or a high-demand outlet, like a bathtub, are used simultaneously, the unit may struggle to supply enough hot water.

Alternative Solutions: Small-Capacity Water Heaters

For those with slightly higher hot water needs, Atlantic offers point-of-use electric water heaters ranging from 15 to 30 liters. These solutions are compact devices designed to provide hot water directly at the location where it is needed, such as a sink, shower, or appliance.

Explore Atlantic’s Instantaneous and Small-Capacity Water Heaters

Atlantic's range includes options like the Tempo Lite an instant water heater, perfect for delivering on-demand hot water efficiently. Alternatively, our small-capacity water heaters provide a practical middle ground, offering quick heating and compact designs suitable for confined spaces.

Choose the water heating solution that best fits your needs and enjoy the comfort, convenience, and energy savings that Atlantic products deliver.