How difficult is it to buy an electric boiler? Which one to choose for a house or apartment
It is not difficult to organize heating of a house or apartment. The main thing is to choose the energy source from which the heating boiler will operate. For a private house More and more often, electric ones are chosen boilers.
The choice is due to the fact that gas pipelines are not everywhere, and the combustion of solid fuel boilers, despite their diversity and modernity, causes a lot of trouble.
When choosing an electric heating boiler, pay attention to its power. Do a thorough calculation before buying., so that the equipment is not overloaded during operation. When purchasing a boiler with more power than necessary, the efficiency of the boiler will be too low, and taking into account the cost of electricity, such a device will be uneconomical.
Requirements for the premises: area
The larger the area of the room, the more heat is required to heat it. Accordingly, a larger number of radiators will be installed in such a room. Initially, the following indicator is taken into account: 1 m3 requires 40 W of power boiler.
In addition to the area of the house and the height of the ceilings, the number of windows and doors is taken into account as sources of heat loss. One window requires 100 watts boiler capacity, and 1 door - 200 W.
A lot depends on the region., where the house is located. When calculating, take into account the coefficients:
- southern areas - 0.7-0.9;
- European and Central part of Russia - 1.2-1.4;
- Northern part and Far East — 1.8-2.0.
When calculating the boiler capacity for a private house indicator increase by 1.5 — the sources of strong heat loss are the floor and ceiling.
When choosing a boiler, one should also take into account ceiling height. Warm air accumulates at the top of the room. Therefore, to warm up the area of human habitation, i.e. the height no more than 2 meters, more thermal energy is required. This means that a more powerful boiler is chosen.
Which electric boiler should you choose for heating?
When choosing an electric boiler are guided by technical characteristics:
- power;
- economy;
- connection method;
- equipment;
- body design;
- manufacturer.
Power
Power - the most important criterion equipment selection. The boiler power depends on the area of the room you are planning to heat. It also depends on the height of the ceilings: the higher they are, the more powerful the device should be.
If you do not want to deal with complex calculations, then use the advice of experts and choose equipment using a simplified algorithm. So, to heat 1 square meter premises 3 m high necessary power 1 thousand W.
Presumably, that with a ceiling height of 2 m, this power enough to heat 1.5 square meters premises.
Attention! Experts recommend the figure obtained as a result of the calculation for the average regions of Russia, increase by another 10%.
Also available for sale dual-circuit boilers that serve not only to heat the house, but also for hot water supplyWhen choosing such equipment, you need to imagine how much hot water you will use.
If the family is small or the equipment is purchased to the dacha, then it makes more sense to purchase two devices - single-circuit heating boiler and electric heater, flow-through or storage, for the kitchen or bathroom.
Economical models
Due to the fact that the selected equipment uses electrical energy as fuel, an important characteristic is cost-effectiveness.
It is advisable to purchase device, the power of which can be adjusted depending on weather conditions.
In the warm season they put a boiler like this by half, or even by a third of the power, so that it does not waste energy in vain. It is better to purchase devices with built-in thermostat or those models where there is the possibility of additional connection of this function. This will allow you to configure the device so that the power is regulated automatically in accordance with the room temperature.
Connection method
Depending on the power, electrical equipment is connected to a single-phase or three-phase network. In everyday life, a single-phase network is used. Therefore, if you do not have the ability to connect to three phases, it makes no sense to even consider this option when choosing equipment.
Equipment
Manufacturers offer consumers a choice of models with different functions. About automatic adjustment The boiler capacity was discussed above.
Since the boiler is connected mostly to a water heating system, it is worth thinking about additional ones. devices that will help facilitate installation.
As an additional option The electric boiler must include:
- circulation pump;
- programmer;
- expansion tank;
- protective devices.
As for the protective devices, they protect the heating system. from pressure drops coolant, prevent freezing water, protect the device from overheating etc.
Reference! Some boilers have built-in cleaning filters and two operating modes - summer and winter and play the role of a mini-boiler room.
Housing design
Electric heating boilers have closed, partially closed and open case. It is recommended to choose the first option, especially if there are small children and animals in the house. The case prevents unauthorized access to parts of the equipment.
Important! The device must have built-in voltage stabilizerThis safety measure will prevent the device from breaking down in areas with power outages.
If there is a long absence of electricity, the boiler may freeze. For this purpose, protective functions are provided in the purchased equipment. If there are none, then you will have to Additionally, get a battery or an autonomous generator and inverter.
Photo 1. With the help of an electric generator, the boiler can operate even when the power is out. You will also need a UPS for safety.
They convert stored energy into alternating current, which will prevent the boiler from stopping working.
Important! Modern cheap devices have inside the case plastic partsAs a result of use, the plastic melts, which will lead to equipment failure. Ask the seller what material the “insides” of the device are made of.
The best manufacturers of electric boilers
The equipment presented on the market is divided into into two large groups — domestic and imported.
Photo 2. The table shows boilers from domestic and foreign manufacturers with the cost indicated for 2017.
Boilers domestic production are characterized by low cost. The disadvantage of such equipment is its bulkiness. Such devices are good for use in a private house, where space allows for the installation of high-power equipment. In addition, the area of a private house exceeds the size of apartments.
In the apartment It is better to install small flat devices foreign production. Their advantage is high efficiency and reliability. But such devices are not economical, and their cost exceeds domestic analogues.
Useful video
Check out this video that talks about the different types of electric boilers.
The final decision
The final decision on the choice of equipment remains with the home owner. Cost plays an important role device and operation. If there is a difference between daytime and nighttime electricity rates in the region, then you can save money by using equipment with the ability to accumulate energy at night.
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