The heating of a private house is an autonomous heating system, the reliability of which depends, first of all, on the boiler. The coolant heating device can operate on many types of fuel, including electricity.
Heating a private house with an electric boiler allows you to do without the use of solid fuel, which constantly needs to be loaded into the stove, and in comparison with gas equipment, an electric boiler for heating a private house is safer equipment to operate. In order to understand the features of electric boilers, we turned to the Miralex company, which specializes in heating and water supply systems for private homes.
Electric heating system in a private house Source remont-da.ru
General information
Electric heating boilers for private homes have been used for many years, but thanks to the development of microprocessor electronics, many current devices can be easily programmed to the desired operating mode for heating the living area. Modern electronic boilers are convenient because the operation of the heating system can be easily adjusted and electricity not wasted at a time when all residents leave the house, and when using a two-tariff meter, the device can be configured for maximum operation at night, when the cost of electricity is much lower.
Electric heating boilers Source ultra-term.ru
No. 4. Number of circuits
Among electric boilers, single-circuit models . They are only responsible for the heating system. To provide yourself with hot water supply, you need to retrofit the system with a water heater or take a double-circuit boiler . The latter has two independent circuits for heating water. Double-circuit electric boilers consume a lot of electricity, so they are used quite rarely.
Features of using electric boilers
Electric boilers for heating a private home are convenient because their installation does not require installing a chimney to remove gases. Electrical installations are virtually silent and do not burn oxygen in the room.
The only disadvantage of such systems can be considered the possibility of electric shock and too high prices for consumed electricity. These shortcomings can be overcome if the equipment is installed taking into account safety regulations, and to save money, as mentioned above, a two-tariff electric meter is purchased.
With the right approach to using an electric boiler in a private home, such a system is not inferior to other types of heating installations, and in many respects significantly surpasses them.
Electric boiler with water heater in a private house Source sellprint.ru
Electrode boiler
The so-called “direct action” unit, since there is no heating element. It heats due to the flow of alternating electric current through the coolant with a frequency of 50 vibrations/second. Heating is carried out due to the rapid movement of water ions. Such an electric boiler is safe, since if the system leaks, it will automatically turn off.
The disadvantages include the increased requirement for water, which must have the required resistance. Periodic replacement of the electrodes is also necessary; they dissolve over time. To avoid the risk of electric shock, heating with an electrode unit is only possible if there is good grounding.
Boiler selection criteria
Currently, specialized stores sell electric heating boilers with many characteristics, and which ones are best for a private home can be very difficult to figure out. When choosing an electric boiler, you should first of all pay attention to the following criteria:
- power;
- type of heating element;
- manufacturer;
- availability of additional functions.
The power rating of the purchased device will determine whether the device can handle heating the living space of the house, and the type of heating element used in the boiler will determine its cost. The cheapest boilers are devices that use heating elements to heat the coolant, and the most expensive are induction units. Its price depends on how well promoted the boiler manufacturer is; in addition, the cost indicator will be influenced by the presence of additional functions of electrical equipment.
Electric heating system for a large country house Source stot64.ru
Boiler heating element
The most common type. The wall-mounted device is a tank in which several heating elements are placed. The choice of this mini-boiler is optimal for an apartment or house, since it is economical due to the multi-stage control mechanism and is easy to maintain. Economy models are the cheapest compared to induction and electrode models. They are also used in conjunction with water heaters. The wall-mounted boiler has manual and automatic modes. Selecting the latter sets the desired temperature at night. A disadvantage of heating element devices is the appearance of scale, which reduces productivity if it is not dealt with.
Often, a wall-mounted mini-boiler has a circulation pump to stimulate the movement of coolant. In modern models, antifreeze can be used instead of water.
How to choose a boiler for a private home
An electric boiler must fully cope with the task of heating a private home, so the device must be selected correctly in terms of power. For an accurate calculation, it is necessary to calculate the heat loss of the building. With this question, it is better to contact specialists who will not only determine the location of heat leaks, but also make the necessary calculations of the power of heating equipment. In general, you should choose devices that are 20–30% more powerful than necessary to provide heat for the entire house.
Electric boilers with heating elements
Such devices are most often used as the main or additional heating of a room. Electric boilers with heating elements can be either wall-mounted or floor-mounted. Floor-standing units, as a rule, are designed for high power and have large dimensions.
Considering the high probability of failure of the heating element, some models are equipped with two heating elements. Such installations are more reliable and allow you to fully heat the premises even if one heating element fails.
New heating element electric boiler Source kotlof.ru
Induction electric heaters
An alternating magnetic field is used to heat the coolant in induction boilers. Under the influence of strong alternating magnetic fields, the metal heats up and heat is transferred to the liquid in the tank. Thus, it is possible to completely isolate the electric heating element from the effects of liquid and salts dissolved in it.
Induction boilers are much more expensive than heating elements, but given the high reliability, efficiency and high power of such heating systems, experts recommend choosing to purchase boilers of this type.
Vortex induction heater Source nn.kotel-t.ru
Prices: summary table
| Model | power, kWt | Complete set with all elements of CO | price, rub. |
| heating elements new | |||
| EVAN EPO-18 | 18 | No | 14 600-21 000 |
| Reco 15P | 15 | Yes | 24 000-28 000 |
| Protherm Scat RAY 18 KE /14 | 18 | Yes | 41 000-45 000 |
| Vaillant eloBLOCK VE 18 | 18 | Yes | 48 000-52 000 |
| Electrode | |||
| Galan Geyser 15 | 15 | No | 8 200-8 900 |
| Beryl-15 Ion | 15 | No | 8 400-8 500 |
| Galan Galax G352 15 | 15 | Yes | 30 000-34 000 |
| Induction | |||
| Alternative energy VIN 15 | 15 | No | 49 000-55 000 |
BoilersElectric boilers
Installation and operation of an electric boiler
You can install an electric heating boiler yourself. Depending on the type of unit purchased, the heating installation is mounted on the wall or on the floor. In both cases, installation is carried out in the following sequence:
- marking the location of the boiler;
- drilling mounting holes;
- installation of the boiler on anchor bolts;
- connecting the boiler to grounding;
- connecting the device to the heating system;
- connecting the device to the power supply;
- filling the heating system with coolant and removing air pockets;
- boiler startup.
Diagram for connecting an electric boiler to a heating system Source stroyfora.ru
If all of the above steps were performed correctly, the electric boiler will start and the heating system will begin to function normally. During operation of the boiler, it is necessary to monitor the coolant level in the tank. If it drops to a minimum, then add water to the normal value.
If leaks occur, to prevent the device from malfunctioning, it is necessary to immediately eliminate the depressurization of the system. Also, during operation, electric boilers for the home must be cleaned of dirt and the wiring connected to the device is in good condition.
Important! The installation and connection of an electric boiler should be done by professionals.
Complete set of heating units
We have already listed the elements of any electric boiler in the basic, cheapest configuration. This is a heating unit, thermostat, automation with an actuator, controls and a temperature sensor.
An important nuance. In budget versions of boilers, the executive element is a magnetic starter. It clicks loudly when the heating is turned on, the sound is clearly audible in the rooms adjacent to the boiler room.
In an extended configuration, manufacturers supply electric boilers with the following equipment:
- low-noise modular contactor instead of a magnetic starter;
- circulation pump;
- membrane expansion tank for a closed heating system;
- overheating and coolant pressure sensors;
- safety group – automatic air vent, safety valve;
- circulation sensor – for induction heat generators;
- weather automatics;
- LCD display, programmer, GSM remote control module from a smartphone.
Naturally, the “fat” equipment of an electric boiler will cost much more than the “poor” one. On the other hand, you will still have to buy an expansion tank, a pump and a safety group. It is much more convenient to install the unit when these elements are hidden inside the housing.
Disadvantages of heating with electricity
The main disadvantage of using electric boilers for heating a private home is the high probability of a power outage. This usually occurs during natural disasters and power line failures. Such troubles arise especially often in the winter season, when the heating operation should not be interrupted for a long period of time.
Considering the large power consumption of such devices, it is almost impossible to provide backup power to the heating system using batteries. The problem can only be solved by connecting powerful generators, which are expensive and consume large amounts of gasoline or diesel fuel.
If you need to connect a powerful heating installation, then, as a rule, such boilers are powered from a three-phase electrical network. Therefore, if in a populated area it is not possible to connect a voltage of 380 V, then heating with electricity will be unavailable for a large private house.
An important disadvantage of using electricity is the high cost of electricity, which only increases every year.
What are they?
Water heating boilers are currently used for heating residential premises.
The main task of these boilers is to convert the energy of the boiler power source into thermal energy, which is transferred to the heat carrier.
Water is most often used as a heat carrier, which circulates through the heating system pipelines laid throughout the house.
But there are several heat sources that will release energy. The most common are gas boilers, in which thermal energy is released through the combustion of gas.
Another type of boiler is solid fuel. To release thermal energy, they also use combustion, but only wood, coal, etc.
Rating of TOP 10 best models
| Place | Name | Price |
| TOP 10 best energy-saving electric boilers with an efficiency above 99% | ||
| 1 | Protherm Skat 9 KR 13 9 kW | 40 000 ₽ |
| 2 | EVAN EXPERT 12 | 41 000 ₽ |
| 3 | Protherm Skat 12 KR 13 12 kW | 39 000 ₽ |
| 4 | EVAN EXPERT 9 | 40 000 ₽ |
| 5 | EVAN Warmos-IV-5 5.1 kW | 18 000 ₽ |
| 6 | EVAN Warmos-IV-12 12 kW | 27 000 ₽ |
| 7 | Protherm Skat 14 KR 13 14 kW | 33 000 ₽ |
| 8 | EVAN Next 9 9 kW | 11 000 ₽ |
| 9 | EVAN Warmos-IV-18 18 kW | 29 000 ₽ |
| 10 | EVAN EPO 18 18 kW | 29 000 ₽ |
Induction type
The third type of boiler is induction, which uses electromagnetic induction for heating.
In such a boiler, a ferromagnetic alloy core is heated by an inductive coil, which then transfers this heat to the carrier.
Such a boiler consists of an all-metal casing in which the inductive coil is placed in a sealed compartment so that it does not come into contact with the medium. The core is located in the center.
Water, as a carrier, passes through the channels, flows along the core, taking heat from it, and leaves the boiler heated.
The best energy-saving energy boilers with an efficiency above 99%
Protherm Skat 9 KR 13 9 kW
A compact electric boiler is capable of providing heat in an apartment or cottage whose area does not exceed 68 m2 . The energy source for it is electricity received from a standard household network of 220 V.
The efficiency of the device is 99.5 percent . The device is equipped with one closed circuit, which performs only the heating function. It is possible to connect a boiler that will provide hot water supply to households.
The control panel is equipped with a display; the boiler can be easily adjusted to the needs of a specific user . There is a possibility of remote control. The model is equipped with the most modern security system.
Characteristics:
- type - single-circuit;
- wall;
- maximum heating area - 68 m2;
- power - 9 kW;
- water temperature in the system is 30-85 degrees;
- circulation pump;
- expansion tank - 10 l;
- dimensions - 74*41*24cm.
Advantages:
- when disconnected, all settings are saved;
- protection against freezing of liquid in the system;
- Ease of Management.
Disadvantages:
- No.
EVAN EXPERT 12
A new generation electric boiler is capable of providing maximum savings in energy consumption . It is easy to install and simple to operate.
The device uses a special heating algorithm based on an analysis of the temperature in the house and outside. The microclimate parameters in the room are maintained automatically and with great accuracy.
It is a miniature boiler room equipped with all the necessary equipment - a circulation pump, temperature sensors, an expansion tank and an air exhaust system.
The protection system consists of several stages and is controlled by a protection sensor against overheating, overpressure and a circuit breaker. The device can be connected to a hot water boiler or underfloor heating system.
Characteristics:
- type - single-circuit;
- wall;
- maximum heating area - 120 m2;
- power - 12 kW;
- circulation pump;
- expansion tank - 10 l;
- dimensions - 74*41*24cm.
Advantages:
- can be connected to a boiler or underfloor heating system;
- 9 preset work programs;
- You can use non-freezing liquids in your work.
Flaws:
- No.
Protherm Skat 12 KR 13 12 kW
This modification is designed for heating a room with an area of up to 120 m2 and producing hot water in a storage boiler, purchased separately.
Suitable for installation in private cottages, country houses and apartments. The device is easy to install, operate and maintain. Throughout its service life it will maintain consistently high efficiency.
It works silently, environmentally friendly and safe . Allows you to quickly and accurately regulate the heating temperature. Requires connection to a 380 V network.
Characteristics:
- type - single-circuit;
- wall;
- maximum heating area - 120 m2;
- power - 12 kW;
- circulation pump;
- expansion tank - 7l;
- dimensions - 74*41*31cm.
Advantages:
- simple installation;
- build quality;
- appearance;
- efficiency;
- clear controls.
Flaws:
- No.
EVAN EXPERT 9
Electric boiler Evan EXPERT 9 is a new generation mini-boiler room that includes all the necessary components . The device is easy to install, configure and maintain.
It provides low energy consumption . It is a stationary heating device designed for coolants with a forced circulation mechanism.
The heating principle is based on an analysis of the air temperature indoors and outdoors. The necessary sensors are included in the kit. Can be connected to both 220 and 380 V networks.
Characteristics:
- type - single-circuit;
- wall;
- maximum heating area - 90 m2;
- power - 9 kW;
- circulation pump;
- expansion tank - 12l;
- dimensions - 79.5*42*30cm.
Advantages:
- automatic operation;
- efficiency;
- possibility of limiting starting power.
Flaws:
- Some buyers complain about poor build quality.
EVAN Warmos-IV-5 5.1 kW
Modern electric boiler from the WARMOS line . It can operate at a coolant temperature from +5 to +85 degrees, which allows you to connect additional modes of underfloor heating and prevent freezing of the liquid in the system.
Includes a functional control panel equipped with LED indicators.
They indicate the current power level and fluid temperature. To start the unit at sub-zero temperatures, a special indicator value of “-0” is provided.
Emergency situations are also displayed on the instrument panel in the form of special codes.
Characteristics:
- type - single-circuit;
- wall;
- maximum heating area - 50 m2;
- power - 5 kW;
- circulation pump;
- expansion tank - 12l;
- dimensions - 31*59*16cm.
Advantages:
- nice design;
- possibility of setting up remote control;
- saving electricity;
- low cost.
Flaws:
- No.
EVAN Warmos-IV-12 12 kW
New generation heating boiler . It features an increased operating temperature range - from +5 to +85 degrees. It can be operated in such modes as “Warm floor” and “Anti-freeze”.
The coolant temperature can be adjusted manually with high accuracy - up to 1 degree.
The design is complemented by an LED control panel with indication.
It is possible to display emergency situations by displaying codes indicating a short circuit, damage to the temperature sensor, a critical increase in coolant temperature, etc. An emergency shutdown system provides additional safety.
Characteristics:
- type - single-circuit;
- wall;
- maximum heating area - 120 m2;
- power -12 kW;
- circulation pump;
- dimensions - 37.3 * 59.5 * 23.2 cm.
Advantages:
- LED panel;
- convenient and simple control;
- reliability;
- build quality.
Flaws:
- slight noise during operation.
Protherm Skat 14 KR 13 14 kW
The boiler is designed for heating medium-sized rooms, up to 120 m2 . A good replacement for gas boilers. Suitable for use with underfloor heating systems.
It has a modern design and does not require connection to a chimney . Easy to install and maintain, operates almost silently. Equipped with the necessary programs for control and self-diagnosis and a convenient LCD display.
Operates from a 380 V network.
Characteristics:
- type - single-circuit;
- wall;
- maximum heating area - 120 m2;
- power -12 kW;
- circulation pump;
- expansion tank 8 l;
- dimensions - 74*31*41cm.
Advantages:
- quiet operation;
- intuitive controls;
- high quality.
Flaws:
- No.
EVAN Next 9 9 kW
Reliable electric heating boiler of the “Standard” class for heating small residential and industrial premises . Can be the main or backup heat source.
It is a monoblock that combines the boiler and control panel.
The coolant temperature is set by smooth adjustment from 30 to 85 degrees. The case material is durable stainless steel. There is a block for connecting the circulation pump.
Characteristics:
- type - single-circuit;
- floor;
- maximum heating area - 90 m2;
- power -9 kW;
- dimensions - 60 * 10.5 * 20.5 cm.
Advantages:
- high build quality;
- reliability;
- noiselessness;
- low price.
Flaws:
- No.
EVAN Warmos-IV-18 18 kW
The electric boiler is the brainchild of the most modern developments in the field of heating . Work can be carried out in an extended temperature range.
It is possible to activate the function of maintaining heat in the system when there are no people in the room to save energy.
The coolant temperature is controlled with an accuracy of 1 degree . Power adjustment can be manual or automatic.
Characteristics:
- type - single-circuit;
- wall;
- maximum heating area - 180 m2;
- power -18 kW;
- dimensions - 38 * 64 * 24.5 cm.
Advantages:
- automatic diagnostics and troubleshooting;
- high build quality;
- thermally insulated body.
Flaws:
- No.
EVAN EPO 18 18 kW
It belongs to the “Standard-Economy” class, and has the most modest price in its class with high quality characteristics . Cheapness is achieved by the absence of a case, but this does not affect the functionality in any way.
The device is equipped with an emergency shutdown in case of overheating of the coolant or a sharp surge in voltage in the network.
Electric boiler heating elements are made from high-quality and durable stainless steel.
Characteristics:
- type - single-circuit;
- wall;
- maximum heating area - 180 m2;
- power -18 kW;
- dimensions - 56.5*27*22cm.
Advantages:
- Can be installed on the floor or wall;
- low cost;
- good quality, efficiency.
Flaws:
- few built-in options.
Other heat sources
To estimate how much an electric heating boiler consumes per month, you need to compare it with other energy sources. It should be taken into account that the efficiency of fuel boilers does not reach a hundred: for gas boilers it is about 93%, for wood and coal boilers it is about 85%.
Below is the cost per 1 kWh for different types of fuel:
- Natural gas: 0.68 rubles, taking into account efficiency – 0.75 rubles.
- Oak firewood: 1.09 and 1.36 rubles, respectively.
- Coal: 1.33 and 1.57 rubles.
- Wood pellets: 1.51 and 1.78 rubles.
- Liquefied gas: 1.99 and 2.13 rubles.
- Diesel fuel: 3.51 and 3.90 rubles.
In each case, heating costs for the season will be (for 17,388 kWh):
- natural gas: RUB 13,041;
- oak firewood: RUB 23,648;
- coal: RUB 27,300;
- wood pellets: RUB 30,950;
- liquefied gas: RUB 37,036;
- diesel fuel: RUB 67,813.
The average price level is given.
In cases where it is not possible to use a solid fuel or gas unit, installing an electric boiler for heating a private home is a good option.
Conclusion
Heating with electricity is unprofitable - only diesel fuel is more expensive. But if it is possible to implement a scheme with a heat accumulator, the energy resource's costs will reach the level of coal and will be comparable to natural gas (the difference will be 25%). This makes sense, especially when you consider the many benefits of electric heating. In any case, each user decides for himself whether to install an electric boiler or convectors as an alternative.
