Electrolux Newsroom Asia Pacific

To store or not to store with water heaters


The Allure & Aura Slim tankless water heaters deliver hot water on demand without taking up too much real estate in homes.

It’s not something many people spare a thought for, even if it spares them from the misery of cold showers in the morning. Yet, water heaters are an essential part of every modern home.

Most homes use one of two types of water heaters. Those with storage tanks and tankless heaters. The latter can also be referred to as on-demand or instant water heaters due to the way it works.

Buying one can be a long term commitment, as a standard water heater can last more than a decade. Water heating can also constitute one of the largest items on your utility bill, especially in cold months, so choosing the right one for your needs can result in cost-savings in the long term.

Here are some factors to consider in choosing a water heater.


Storage water heaters are usually much less costly to purchase and install. Their tankless counterparts cost about twice as much and installation for tankless heaters can be expensive due to installing good piping and venting. Replacing a storage heater with a tankless heater can also be costly due to the changes in piping and venting required.

On the other hand, storage water heaters maybe less durable, lasting up to 15 years versus a tankless heater, which may last 20 or more years. Tankless heaters can also be more energy efficient, costing less to operate than storage water heaters.

Space requirements


The Allure & Aura Slim tankless water heaters deliver hot water on demand without taking up too much real estate in homes.

As its name states, the average storage water heater has a tank that require extra real estate in or outside of the house. This can be problematic in smaller apartments. Tankless water heaters like the Electrolux Allure and Aura Slim series range are very compact, being no larger than a small briefcase. This saves on a lot of valuable space.

If you still prefer your storage heaters however,  the new Aura and Allure Storage water heaters do address this problem. This  latest range  was designed to fit into most modern bathrooms easily and unobtrusively.

Water supply

You’ll need to choose a storage tank with a capacity that meets household demand, especially at peak hours. If it’s too small, the hot water could run out. Although larger storage tanks, like the Allure 30L model, are usually sufficient for most households.

On the other hand, while hot water never runs out with tankless heaters, it can produce inadequate water flow if it has too low a flow rate for peak hours.
Here’s a quick guide to calculating the flow rate you’ll need in a tankless water heater.

Energy Efficiency

Playing a large part in the operating costs of your water heater is its energy efficiency. Storage water heaters tend to use more energy due to its constant use of energy to heat and reheat water in the tank. This is especially true with poorly insulated water tanks as they lose more heat. There are storage water heaters that have the Energy Star label, however. If you do get one, look out for such rating labels as they usually indicate a more energy efficient model.

Tankless water heaters do save energy as they only operate when hot water is needed. This may save as much as 25% of energy used to heat water. So while they do have a higher upfront cost, they can pay off in the longer term on your utility bill.

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