Selecting the ideal heating system for your house is essential for both efficiency and comfort. A dual-circuit electric boiler is a common choice since it can heat your house and supply hot water for daily use. But it can be difficult to choose the best option for your needs when there are so many available. We’ll walk you through the most important things to think about when selecting a dual-circuit electric boiler in this guide so you can decide what’s best for your house.
The size of your house and your needs for hot water and heating should come first. Selecting a dual-circuit electric boiler that can effectively heat your whole house and supply your household with enough hot water is crucial because these boilers come in different sizes. An overly large boiler can result in wasteful energy use and increased utility bills, while a boiler that is too small might find it difficult to meet your demands, causing discomfort and inconvenience.
The electric boiler’s efficiency is a crucial consideration as well. Seek for models with high energy efficiency ratings or those that have earned the Energy Star certification. With their minimal energy waste design, these boilers will help you save money on your long-term hot water and heating bills. Furthermore, energy-efficient boilers are better for the environment because they lessen carbon emissions, which helps to create a greener future.
The features and controls that are offered are also crucial to take into account when selecting a dual-circuit electric boiler. Contemporary boilers frequently have cutting-edge features like energy-saving modes, remote access, and programmable thermostats. In addition to adding convenience, these features let you maximize the use of your hot water and heating systems, which increases comfort and efficiency even more.
Lastly, remember to account for the electric boiler’s installation and maintenance needs. Select a reliable manufacturer or supplier that offers thorough warranty coverage along with expert installation services. When choosing a boiler, don’t forget to take availability of replacement parts and ease of maintenance into account. Purchasing a high-quality boiler with low maintenance needs can ultimately save you money and time on repairs and upkeep.
| Considerations | Recommendations |
| Capacity | Choose a boiler with sufficient capacity to meet both heating and hot water needs of your house. |
| Energy Efficiency | Opt for a dual-circuit electric boiler with high energy efficiency ratings to minimize electricity consumption. |
| Size and Space | Ensure the boiler"s size fits the available space in your house, considering installation requirements and clearance. |
| Features | Look for features like adjustable temperature controls, programmable settings, and safety mechanisms. |
| Brand and Warranty | Choose a reputable brand with a good warranty to ensure reliability and support in case of issues. |
Choosing a dual-circuit electric boiler for your home"s heating and water supply is crucial for efficiency and comfort. These boilers serve two purposes: keeping your home warm and providing hot water for daily needs. When selecting one, consider factors like the size of your home, your hot water usage, energy efficiency ratings, and safety features. Opt for a boiler with adequate heating capacity to suit your home size, ensuring consistent warmth throughout. Additionally, prioritize energy-efficient models to save on electricity bills and reduce environmental impact. Look for safety features such as overheat protection and pressure relief valves to ensure reliable operation. By considering these factors, you can make an informed decision that best meets your household"s needs for heating and hot water supply.
- What are double -circuit electric boilers
- Device and principle of operation
- Reviews of household double -circuit electric boilers: advantages and disadvantages
- How to choose a suitable model
- Type of electric boiler
- The minimum necessary power
- Calculator for accurate calculations
- Automation functionality
- Video on the topic
- Electric boiler and hot water (DIS)
- How to warm hot water in a private house? Which is better: a double -circuit boiler, a boiler, or maybe something else?
What are double -circuit electric boilers
Double-circuit electric boilers are almost always wall models that combine the functionality of two devices at once: the flow (less frequently accumulative) water heater and the heating boiler itself. These models have the same technical characteristics and slightly larger dimensions. In the hot water supply circuit (DHW), coolant from the heating circuit is never combined with sanitary water.
The ideal applications for double-circuit electric models are small residential structures up to 150–200 m 2. Not only are high operating costs a problem, but so is the pipeline’s length from the boiler to the consumption points, which should not be longer than 8 to 10 meters. If it is, hot water may be obtained more than 20 seconds after the tap is opened.
Double-circuit water-heat electric boilers are the best boiler units if you don’t mind the high cost of electricity. Unlike other types, they are dependable and functional, easy to install, don’t require ventilation or a chimney, and don’t place a lot of demands on the room’s dimensions. Models with a capacity greater than 10 kW are the only ones needed for coordination with energy supervision bodies.
Furthermore, it is important to keep in mind that models that have a capacity greater than 6 kW need to be connected to a three-phase (380 V) power grid; a single-phase (220 V) network is insufficient to deliver higher power.
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Device and principle of operation
The only features that separate electric double-circuit boilers from single-circuit boilers are the productivity distribution organs between the contours and the heat exchanger, which heats sanitary hot water. The heating unit of the heating circuit, which houses the heat exchanger and heating elements and heats the water, is the identical basic component shared by all models.
The majority of the time, the housing already has all of the heating system’s components and nodes, including the manometer, sensor set, automatic air vent, expansion tank, circulation pump, and safety valve. This means that the supply and reverse heating lines, the supply of hydraulic devices, and the source of sanitary water (such as the water supply) are all that are needed to install and connect the boiler to the system.
In order to comprehend the working principle of double-circuit boilers, let’s take a look at how each circuit functions independently:
- heating – the primary circuit, the coolant continuously circulates in it, heating in the heating node and giving heat through the radiators installed throughout the house;
- Water heating – it is activated only when opening the consumption point of hot water, directs the heat carrier of the heating circuit to the heat exchanger of the hot water, due to contact, heating it, and therefore the sanitary water located inside.
Because a three-way valve controls the power distribution among the contours in double-circuit electric boats, some power is not allocated to heating the hot water, allowing you to primarily regulate the heating circuit’s temperature.
There are models with a built-in boiler that holds 50–300 liters of continuously heated water, but models with a flowing principle of heating have a 5–15 second supply delay. This helps to level out the low productivity of the hot water and minimize presentation delays by supplying a certain amount of pre-prepared hot water.
Reviews of household double -circuit electric boilers: advantages and disadvantages
| Advantages | Flaws |
| Favorable price-the initial price of double-circuit models is only 15-20% higher than single-circuit analogues, so this is the cheapest way to organize hot water in a private house or apartment (in comparison with an indirect heating boiler, a separate water heater, etc.D.) | High operating costs – heating and preparation of hot water due to electricity today are the most expensive pleasure |
| Compact dimensions-often the dimensions of double-circuit models are comparable to single-circuit and only with rare exceptions they are more than 30-100 mm in any of the parties | Energy dependence – both heating and heating of sanitary water depend on the stability of the mains, therefore, in case of interruptions, an inverter with the battery, generator or UPS is needed |
| Simplicity of installation and connection – in addition to the fact that the installation of an electric boiler is much easier and faster, installing a double -circuit model is even simpler if compared with the need to install a separate that requires the presence of a boiler chimney and a hot water preparation for hot water | Models with a capacity of over 6 kW require connection to three -phase (380 V) power networks |
| High efficiency – the efficiency of all modern electric boilers of more than 99% | Extremely limited selection of models in the Russian market |
| Almost completely silent work | According to owners, powerful models create a significant load on the electric network of the house, so it is desirable to have high -quality and serviceable wiring |
| The presence of models with a built -in storage tank |
How to choose a suitable model
Type of electric boiler
The only electric shoe models that allow the simultaneous use of heating and hot water preparation are Tennoye models, which use tubular electric heaters as their heating elements. If it weren’t for the frequent mistakes made by internet retailers and the way manufacturers phrase their electrocots with nozzles for connecting an indirect heating boiler as a double-circuit would, we wouldn’t be focusing on this paragraph.
Among all electric boilers, Tennovo models are the most popular overall. However, they have a particularly unpleasant flaw: over time, they tend to form on the heating elements of the scale, which causes the boiler’s efficiency to decrease by 10, 20, or even 30%. The boiler also requires more electricity and time to heat the coolant through the layer of scale.
Electrodes are easier to use and more dependable than electrokotles; they don’t cause scale buildup but do require high-quality grounding, pipes, radiators, and coolant. In addition, there is induction, which is dependable, mostly utilized in industrial settings, has a faster heating rate, and can use antifreeze as a coolant. However, it’s important to keep in mind that Tennovy is the only double-circuit boiler available today, replacing both electrode and induction boilers.
The minimum necessary power
Simplified, the rule 1 kW for every 10 m 2 determines the minimum power required of an electric double-circuit boiler for the house’s heating and water supply. We also advise laying 25–30% of the reserve. For a typical house (two brick masonry, no or little insulation, 2.7-meter ceilings, Moscow Region climate), this approach is more than sufficient.
For instance, the minimum power required for the double-circuit electric boiler in the above average house with an area of 150 m 2 is 150/10 * 1.3 (30% of the reserve) = 19.5, or 20 kW.
In other scenarios, such as those with high ceilings or expansive glass sections, specific corrective coefficients are considered, which alter the outcome by 5–30%, either larger or smaller. With the calculator below, you can determine the minimum power with accuracy.
Calculator for accurate calculations
The total heat production of all radiators, the power of which is determined individually for each room (based on heat loss), should be supplied by the power of an electric boiler. Thus, in order to get precise data, use a calculator to determine the least amount of power required for each heated room independently, then dry all the values you get to get the result for the entire house.
Automation functionality
The models that use the least amount of energy are those that have a programmer. You can program the boiler to operate at a specific temperature for a day or a week. For instance, you can program it to operate at 15 °C during the day when no one is home or 19 °C while you sleep. This can save you up to 30–40% on your electricity bill. A room thermostat can be used to achieve the same purpose in the event that the built-in programmer is not present.
How to select an external thermostat for an electric boiler to achieve monthly heating savings of up to 30%
It’s also important to consider how easily the temperature can be adjusted and how many heating elements there are. More comfortable and cost-effective models will have at least six heating and temperature controls.
Many boilers only have overheating protection, but if there is a chance to find a model with freezing and pump blockage protection, then good for you. If not, there are few options, and emphasizing more criteria would be pointless.
Selecting an electric boiler with dual circuits for both heating and water supply is a big choice for your house. It’s crucial to take a number of things into account to make sure you choose the best option for your requirements.
First, determine how much hot water you need and how big your house is. A boiler with a larger capacity will be necessary to ensure an adequate supply of hot water in a larger home with multiple bathrooms. On the other hand, a smaller house might need a weaker boiler in order to adequately heat it.
Think about how energy-efficient the electric boiler is. Select models with high energy efficiency ratings to cut down on your utility bills and minimize the amount of electricity you use. Choosing environmentally friendly products can also help you reduce your carbon footprint and support a more sustainable environment.
When choosing a dual-circuit electric boiler, dependability and longevity are essential considerations. Examine various models and brands, go through user reviews, and take advantage of manufacturer warranties. Long-term financial savings can be achieved by purchasing a high-quality boiler since it will require fewer repairs and replacements.
Consider the space requirements as well as the installation procedure. Make sure your house has enough room for the boiler and any piping that will be required. In order to guarantee that the boiler is installed correctly and safely, it is also advised to hire a professional installer.
Finally, consider any extra features or capabilities that could improve your water supply and heating system. Certain boilers offer flexibility and ease in controlling the heating in your house by being compatible with smart home devices, having remote control options, or having programmable thermostats.
