Instant Heat Hot Water Heater

Instant Heat Hot Water Heater

A reliable supply of hot water is one of the most essential household appliances. Having quick access to hot water means everything from cooking meals and washing clothes to relaxing with a shower or bath after a long day.

Instant heat hot water heaters are designed to provide this convenience. Also known as tankless or on-demand water heaters, they only activate when you turn a tap on.

No Storage Tank

If your current storage tank water heater is approaching the end of its lifespan or you want to make a greener choice, an instant heat hot water system can help. These systems eliminate the standby losses associated with traditional water heaters by heating only when a tap is turned on.

This means that your energy bill will be significantly lower than with a conventional hot water system. The system’s aluminium heat exchanger instant heat hot water heater only operates when the hot water tap is on, converting electricity into hot water as needed.

It takes some time to get the hot water flowing when you turn on a tap because the small tank has to be heated up first. However, once it is ready, the system can produce a steady flow of hot water at a rate of up to 3 l/min.

In addition, the lack of a storage tank helps prevent leaks, which can cause significant damage to your home and property. You can also install multiple instant water heaters in your house to ensure that you always have a source of hot water available, even if you are using several appliances or showers at once.

Energy Efficiency

Unlike traditional storage tanks that keep hot water on tap, instantaneous or demand water heaters heat only when they sense the flow of water. This eliminates the energy waste of heating and storing water that you’ll never use, which is called “standby loss”.

When you open a hot water tap, cold water moves through a pipe into the system and an aluminium heat exchanger heats it instantly. This means your energy bills will be lower because you only use the power or gas when necessary.

You can reduce your peak demand even further by upgrading to energy efficient appliances and using water-saving shower heads, baths and dishwashers. You can also install multiple instant hot water systems in your home to provide dedicated, instantaneous heating for each appliance or fixture.

These energy-efficient water heaters are a great investment for the long term and will save you money on your electricity or gas bill. It’s important to hire a local plumber to install and service your system to ensure it runs at its best. They can help identify any issues and offer the right solutions fast.

Space Savings

Unlike conventional storage tanks, instantaneous water heaters don’t take up a lot of space in your home. They’re small enough to install under sinks or in a utility closet, making them an ideal option for apartments and homes with limited space.

These water heaters are also more energy efficient than traditional tank models. They don’t use a lot of energy to heat the entire supply of water, which can be a significant savings in terms of energy costs over time.

However, that doesn’t mean that these units aren’t subject to the same operating costs as older models. It’s important to choose a model with an Energy Factor (EF) and unit price of energy that best match your household needs.

Whether you’re using an electric or gas-fired tankless water heater, it’s crucial to keep up with regular maintenance and service inspections. A qualified plumbing and heating professional can electric powered boiler help you maintain your water heater to optimise its performance and energy efficiency. They can perform routine maintenance and even flush your system to remove sediment and mineral build-up.

Flow Restrictors

An on-demand water heater provides a higher flow rate of hot water than a traditional tank-style unit. This allows for multiple faucets and appliances to be used simultaneously without affecting the temperature or flow rate of the water. This feature also saves energy because a tank-style heater is always heating water even when it’s not needed, whereas an on-demand unit only heats the amount of water needed.

Despite the higher flow rates, it’s important to consider your household’s water usage when selecting an on-demand heater. Determine how many fixtures will need to be operated at once and their maximum flow rate, which is usually measured in gallons per minute (GPM).

If you’re concerned about the water heater not being able to provide enough hot water for your household needs, you can install a pressure reducer valve on the main line of the system. This will lower the pressure of the water to below 75 psi, which should be sufficient for most households. Enlisting the help of a professional during the installation process can ensure that the valve is properly installed and in compliance with safety regulations.


Despite the fact that they don’t have tanks, instant water heaters still have a number of safety features to help prevent damage and potential injuries. These include a thermocouple, cut out and fusible plug, which are all designed to protect against electrical issues and keep your home safe.

Unlike traditional water heaters, instant heat hot water heaters operate on a more energy efficient basis, only heating water when it’s needed. This helps to save on energy costs and reduces carbon footprint.

However, to ensure that your instant heat water heater is operating properly, it’s essential to have a professional install and inspect it regularly. This will help boost the system’s efficiency and safety. Look for a local plumber who is certified and has experience in installing these units. It’s also important to read and follow the manufacturer’s instructions to ensure the correct usage and maintenance of your water heater. It is recommended to flush your instant water heater once a year to remove sediment and mineral build-up. For this, you will need a submersible water pump, white distilled vinegar and a bucket.

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