Every year electric boilers are increasingly used as an alternative to solid-fuel and gas sources for heating a house. What are electric boilers and what should be considered when choosing?
The most important advantage of electric heating equipment is that only electric power is required for its use. It is not always possible to connect a country house or a summer cottage to the gas main, this significantly limits the choice of heat sources. Sometimes only an electric boiler can be used to organize a full house heating.
Pros and cons of electric heating boilers
If you compare an electric boiler for heating with a gas or solid fuel, then its advantages are obvious?
- Can be installed in any room; no chimney and hood are required; special permits and approvals are not needed;
- Low cost of installation and maintenance;
- Reliability and safety – it is possible to leave the boiler switched on without constant supervision;
- Relatively small size and quiet operation;
- Environmentally friendly – no harmful emissions and soot.
The disadvantage of electric heating is operating costs associated with the high cost of electricity. For heating large rooms in areas with a cold climate and long frosty winters, electric boilers are usually unprofitable. In climatic zones with milder weather conditions or in the presence of additional alternative sources of heating, the electric boiler can surely be considered the best option.
Types of electric boilers
Electric boilers are divided into three types, based on the method of heating the heat carrier:
Electric heating boilers
The heating boiler functions using the kettle principle familiar to many. Some kind of elements that heat the water, here are the heating elements – thermoelectric heaters.
This type of boiler has certain advantages. First of all, this is a great design, thanks to which the boiler can be hung on the wall and it will not take up much space. It is easy to install, it has in its arsenal thermostatic and starting equipment that allows you to maintain the desired water temperature in the desired mode.
By operating this boiler, it is possible to regulate the power used, based on specific requirements and needs. To do this, simply turn on and off certain heating elements.
Of course, such a system also has a certain number of flaws. The most important of these is the appearance of scale on the heating elements, a gradual decrease in thermal efficiency and increases the use of electricity.
This type of boiler is fundamentally different from the tenov, and the main difference here is how the thermal medium heats up. The role of the elements heating the boiler is played by electrodes, which, in essence, transfers the force of electrical energy to water, which heats up from its resistance at the moment when electric current flows through it.
Scale on the electrodes does not appear. Among the main advantages of such boilers should be noted their compactness, relatively low cost, safety.
As disadvantages, it is worth noting the mandatory water treatment and the fact that all electrodes need to be replaced periodically, because they, as the use of heating equipment, simply dissolve.
Externally, this boiler is similar to a transformer, which was placed in a pre-welded metal housing. The coil is located in a special hermetic room, which eliminates possible interaction with the heat carrier that circulates in the contour of this heater.
This type of boiler has its own advantages. It does not need heating elements, therefore, eliminates the associated damage. Not
detachable connections, which is why you can eliminate leakage. Scale, if there is, then in minimal quantities.
Among the drawbacks of such boilers, it is worth noting the relatively high cost and large dimensions.
Electric heating can be cost-effective in cases where all window designs are made of high quality, the doors are insulated, and floor coverings are in excellent condition.
Before choosing the thermal equipment, it is recommended to make calculations, with the help of which you can determine how much your house needs to be heated. It is better to choose a boiler with some power reserve in case of a particularly cold winter.
In real conditions, when using modern energy-saving technologies (double-glazed windows, exterior wall insulation, attic and basement insulation), the house will be warm, even if the boiler operates at half of its calculated capacity.