How to choose an electric water heater?

Oct. 25, 2022

Choosing the electric water heater for a home is a somewhat complicated task. The decision will depend on different factors such as the characteristics of the home, the number of people who live or the type of supply. In this article we are going to give you the main keys that must be taken into account to choose an electric water heater that best suits your needs.

The main advantages offered by the different types of electric water heaters with respect to to gas heaters are:

• They do not need to have a gas installation, reducing the risks that this entails.

• The water temperature is constant

• Water pressure problems are avoided.

Main factors to take into account when choosing an electric water heater:

Electric water heater capacity

As the hot water is used up, the heater lets more water into its tank and the heater's resistance heats the water again.

To perform the calculation in an approximate way, the following must be taken into account:

• The number of members of the family unit.

• Use of shower tray or bathtubs. The amount of water used in a shower is not the same as if you fill a bathtub.

Characteristics of thermoses according to their capacity

Capacity (Liters)

10-15 Liters

For scrubbers whose water consumption does not exceed 30 liters per day.

30 Liters

For dwellings in which a single person resides

50 Liters

For homes in which two reside people.

Capacity for two showers simultaneously, regeneration level is quite high.

80 Liters

For family homes of three people. They can store enough water for more than two showers with hot water left over for other uses.

100-150 Liters

Mainly intended for homes where more than three people reside.

200 Liters

For large family homes or even small student residences.

300 Liters

Thermos with the largest capacity on the market, focused on sports clubs or large residences.

The right place for the installation of the thermos

The chosen place must have an electrical outlet and the corresponding water inlet and outlet pipes. In addition, the wall must be strong enough to support the entire weight of the thermos once the installation has been carried out, it must be taken into account that once installed the weight will be higher since it will contain the water.

To carry out the installation, we recommend hiring the services of an experienced professional installer.

Fixed or adjustable temperature

Fixed temperature thermos: devices that do not allow regulate the temperature of the water they heat, which will always be at the same temperature.

Variable temperature water heaters: higher cost than those with fixed temperature. It is usually used depending on the time of year. Even if the temperature regulator is not used much, changing the degrees in summer can save electricity costs.

Hardness of water

Magnesium and calcium are two minerals that are present in the water in different percentages depending on the area of the country. The greater the amount of these minerals, the greater the hardness of the water and the greater the lime content.

Areas such as Barcelona, Mallorca, Alicante, Murcia and Almería are characterized by having the hardest water in Spain. If you live in any of these areas, it is essential that you choose one of the water thermoses electrical systems that have anti-scale systems.

If you need to buy an electric water heater, we leave you a selection in the following link:

https://www.acpclima.es/termos-calentadores-y-acumuladores-a5b/