Best Electric Boiler for Two People: 80L Capacity, G12 Tariff, Suitable Models & Installation

Hello,
I changed my flat and decided to install an electric boiler in the bathroom.
Previously, the consumption of warm water (2 people, bathtub) was different (2-4 meters). Now, instead of a bathtub, there will be a shower, a sink in the kitchen and a sink in the bathroom. I know it's hard to say, but will an 80L boiler be enough? and whether it makes sense (economically) to use the G12 tariff to heat water, i.e. the boiler will be able to heat at night and from 1:00 p.m. to 3:00 p.m. (I would like to do this with a time switch). Which models do you recommend and which not?
ps. I know that instantaneous water heaters are better, but there is a problem with a 3-phase installation, and the gas is gone.
Thank you for opinion.
greetings

Hello.
80L. should be enough for two people, the boiler I would suggest is Ariston sg 80 pl. And as for the G12 tariff, it depends on the use of electricity during the day (except for the G12 tariff)

An offer that cannot be refused. In the kitchen and in the bathroom, by the sink, install one flow heater with 230V operating voltage. In the bathroom, install an electric boiler about 60 liters and start the boiler once a week for bathing. There is no economics, working the boiler around the clock at night and during the day the water in the boiler cools down. Despite the fact that you have a second tariff, the costs of non-stop exploitation of the boiler will be high. installation and security in the apartment. After all, all water heating devices will not work at the same time.

debik5 wrote:

Hello.
... And as for the G12 tariff, it depends on what will be the use of electricity during the day (except for the G12 tariff)

I understand, but the question asked me whether, while heating the water at night and between 1 p.m. and 3 p.m., it will be warm all the time (with normal consumption), or is it better if the boiler is on all the time?

Added after 18 [minutes]:

kierbedz4 wrote:

An offer that cannot be refused. In the kitchen and in the bathroom, by the sink, install one flow heater with 230V operating voltage. In the bathroom, install an electric boiler about 60 liters and start the boiler once a week for bathing. There is no economics, working the boiler around the clock at night and during the day the water in the boiler cools down. Despite the fact that you have a second tariff, the costs of non-stop exploitation of the boiler will be high. installation and security in the apartment, because all the water heating devices will not work at the same time.

The heaters, unfortunately, fall off, the apartment is supplied with 4KW power (and the maximum can be 5KW). I rather mean that the boiler at night (say 4.00 - 6.00) and during the day (13.00-15.00) heats the water to a given temperature. After all, even when it is turned on all night, the heater will only work to heat the water to a given temperature.

Heating the water in the boiler with a capacity of about 100 liters to a temperature of about 85 degrees C is not less than 6 hours of heater operation.

kierbedz4 wrote:

Heating the water in the boiler with a capacity of about 100 liters to a temperature of about 85 degrees C is not less than 6 hours of heater operation.

Only the friend will have 80l and will probably heat up to 45 degrees because more is not needed at home (and up to 85 is not even allowed). The 2200W heater will do it in an hour and a half.

Exactly. 45C is enough. So what can you say about the losses? I know that the producers give parameters, but from what I have read, they are not reliable. How many degrees will a medium-class 80L boiler lose in 5h at 45C?

It may lose 5-8 degrees. On a 60l tank, the stove, for example, heats up at ~ 22:00 at 45stC, the next switching on is only at 6-7 hours. (as nobody uses water of course). Hysteresis 2stC.

Please note that in the boiler, cold water displaces warm water, and there is a partial mixing of warm and cold water.

kowallz wrote:

Please note that in the boiler, cold water displaces warm water, and there is a partial mixing of warm and cold water.

But what's the matter ?

Hello,
I am asking for specific tips.
I would like to buy a boiler for 2 people.
I was thinking about 60 liters.
I can set a maximum of 1.5kW (due to the electrical installation - it blows fuses, and many devices have electricity, so temporarily let it be such power).

I am asking for tips on which company or model to choose. What to look for?

Is lemet recommendable?

I am asking for quick answers - the boiler broke down, cold water in the tap, the women are screeching ;)


Greetings,

I will dig out the old topic - I have been using a flow water heater for several years - the first one worked for about 5 years and the second one a little over a year, the heaters burned out due to the air in the installation and the service did not accept the warranty. I can't afford to buy a heater for PLN 1000 every year, so I thought about a boiler. There is no problem with the installation - there are 3 phases and protection for 25 amps. Tell us what to consider when looking for a boiler, whether 60l is enough for two people and what power of the heater to choose. And finally - so far I looked only in castorama and the prices for such a pot vary a lot ... from 300 PLN to 1000 or more - where are the differences?

This topic is maybe a bit old, but probably many people who are looking for this information may find this information important. I have been using an LPG gas boiler for over 5 years. From Easter 2014, I installed a horizontal 80 L (galmet) boiler. I am a bit afraid that the power consumption will be quite high, but my experience so far shows that the cost of electricity is not too drastic. The boiler is powered by a 1400 W heater. It turned out that up to 4 people could easily take a shower without pouring water in winter. Of course, you can't take examples from American movies. Half an hour of pouring hot water is just an American luxury and an example of anti-ecology. The technique is to pour the body, close the valve, lather, wash, open the valve and rinse.
The boiler works 2 hours a day. At 5:00, it turns on for 30 minutes. and at 5:30 p.m. for 1.5 hours. The temperature is set at 45 degrees. I am a happy person. I always have hot water. The boiler only serves the bathroom. I have a small 5 liter boiler in the kitchen.
Extra tip: before installing the boiler, change the standard magnesium anode to titanium. Little extra cost and no rotten egg stench. Legionella bacteria are almost everywhere.
I greet everyone.

Hello.
It will warm up the topic so as not to assume another topic of the same type.

It is still not explained here which boiler is best to choose. I am also looking for a 30L electric boiler because the previous one started to leak and here I have a problem which one to choose. A lot of people write about the Ariston company, is it really worth recommending or looking for something else?
I think that the price of up to PLN 500 is enough for 30L. What should you pay attention to when buying a boiler?

lopr_pol wrote:

It may lose 5-8 degrees. On a 60l tank, the stove, for example, heats up at ~ 22:00 at 45stC, the next switching on is only at 6-7 hours. (as nobody uses water of course). Hysteresis 2stC.

I do not know where these data come from and why there are such differences, but I have a 140l boiler for two + 3 years old child. It heats the water so that there is no risk of scalding up to about 42 degrees Celsius. When I leave for a weekend on Friday, I turn off the boiler and when I come back on Sunday evening, there is still hot water in the boiler. 3-year, insulated, vertical boiler by GALMET.