Rating of TOP 10 combined boilers for heating. A selection of wood and electric models

To heat country cottages and private houses, combined heating boilers are increasingly being used - devices that provide optimal temperatures regardless of the presence of a centralized gas supply.

Compared to traditional equipment, combined-type units have many advantages, among which the main one is significant savings in money.

However, in order to purchase suitable equipment, you need to carefully familiarize yourself with the selection criteria and assortment.

Rating of the TOP 10 best combined boilers for heating

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Prices: summary comparison table

What are combi heating boilers?

For your information! A combined heating boiler is a device designed for heating a room that can operate on solid (wood) or diesel fuel, electricity or gas.

The equipment is universal in use, has a high efficiency and is considered very environmentally friendly .

The device is equipped with everything necessary so that it can be easily connected to a home heating system or to a “warm floor” structure - all additional accessories are usually included in the delivery package.

Classification by functionality

Heating boilers are single- and double-circuit. They differ in their functionality.

Single-circuit

The main purpose of these models is heating residential premises.

Operating principle: heating water in a container to the required temperature, supplying hot liquid to radiators (batteries) located in the rooms of the building.

Advantages:

• minimal raw material costs;
• significant savings during operation.

The main disadvantage is expensive equipment.

There are different models on the market that can operate on gas, solid and liquid fuels, and electricity.

Dual-circuit

Devices of 2-phase design simultaneously perform several functions:

• equipping the house with warm water;
• heating of residential premises.

A distinctive feature of the design is the presence of 2 separate heat exchangers with a closed and open fluid supply system. In the first case, it is used only for heating the building. In the second, water is additionally heated for domestic needs.

Double-circuit gas boiler.

How to choose a combi boiler?

In order not to make a mistake in choosing a combined type device for a private home, it is worth familiarizing yourself with its main technical characteristics.
These include:

• maximum thermal power. On average, heating 1 sq.m. area you need to spend 0.1 kW of thermal energy. However, it is better to entrust the calculations to specialists who will help you find the best solution;
• fuel used. The devices are capable of working simultaneously or alternately with several types of fuel. The most popular are electric-gas, electric-wood, gas-wood, as well as models with a wood-diesel fuel combination;
• type of ignition - mechanical or electronic. According to experts, electric ignition is more economical since the unit does not have a pilot light. In addition, in the event of a short-term drop in pressure, the system will automatically resume operation of the boiler;
• heat exchanger material – steel, cast iron or copper. Steel heat exchangers withstand temperature stress well, cast iron ones have a long service life, and copper ones have high efficiency and are less susceptible to high temperatures.

Alternative solution

Heat pump

Another heating source is a heat pump. The principle of its operation is similar to that of a conventional refrigerator. The compressor compresses the refrigerant, releasing excess heat into the condenser—it warms your home. In the condenser, gaseous freon turns into a liquid state. After the heat exchanger, it passes through an expansion valve and evaporates with a sharp drop in pressure. With sudden evaporation, the temperature of the heat exchanger drops to a very low level. Since the heat exchanger lies in the ground or on the street, it begins to take away heat from the environment. After the refrigerant turns into a gas in the evaporator, it returns to the compressor and a new cycle begins.

If we consider this solution in terms of efficiency, then it can rightfully be called the best, but with a bunch of reservations. To this day, heat pumps are quite expensive. Air heat pumps do not work in severe frosts, and not all residents have the opportunity to install geothermal ones. You can choose it as the main source of heat, but it is important to understand that its payback period is quite long.

Popular models

Keep in mind! It is easy to find suitable heating equipment on the domestic market.

The main thing is to decide in advance on the desired parameters and consider the model range in detail.

Models of small and medium thermal power up to 30 kW

TOP-5 rating of models with average power in terms of price and quality ratio.

Teplodar Kupper OVK 18 18 kW

Powerful equipment that is perfect for installation in a small room.

A combined single-circuit unit, presented in a compact housing that will not take up much space in the room.

The presence of a water-tube heat exchanger can significantly improve heat removal and increase the efficiency of the device, which are the main advantages of this model.

Specifications:

• maximum thermal power – 18 kW;
• heat exchanger material – steel;
• fuel – natural gas, coal, firewood, pellets;
• coolant temperature – 60-80 °C;
• control type – mechanical.

Advantages

• steel primary heat exchanger;
• possibility of connecting external control;
• presence of a hob;
• versatility of use;
• Convenient floor installation.

Flaws

• chimney elements will have to be purchased separately;
• lack of draft regulator included;
• complicated operating instructions.

Teplodar Kupper PRO 28 28 kW

An impressive new product, with which you no longer have to think about how to quickly heat the room.

A single-circuit model from the middle price range, which successfully implements a long-burning mode when working on coal and wood.

The device also provides the ability to install a pellet or gas burner - this allows for complete automation of the process, relieving the user of the need to constantly monitor the situation.

Specifications:

• maximum thermal power – 28 kW;
• heat exchanger material – steel;
• fuel – natural gas, coal, coal and wood briquettes, firewood, pellets;
• coolant temperature – 60-95 °C;
• control type – mechanical.

Advantages

• pre-installed thermometer;
• energy independence of equipment;
• long warranty period;
• the presence of a heating element to maintain temperature;
• extended equipment.

Flaws

• weight and dimensions of the structure;
• fast cooling;
• expensive repairs.

ACV Delta Pro S 25 26 kW

A unique model that can pleasantly surprise with its wide functionality and attractive price.

Double-circuit combi boiler designed for floor installation, ideal for both domestic and industrial purposes.

The device is distinguished by the presence of a well-thought-out system of protection against high pressure and overheating, which guarantees absolute safety of operation.

Specifications:

• maximum thermal power – 26 kW;
• heat exchanger material – stainless steel;
• fuel – natural gas, liquefied gas, diesel fuel;
• coolant temperature – 60-90 °C;
• control type – electronic.

Advantages

• power-on indication;
• presence of a thermometer and pressure gauge;
• possibility of connecting external control;
• presence of a safety valve;
• built-in boiler.

Flaws

• the burner is purchased separately;
• high cost of the model;
• It is better to invite a professional for installation.

Protherm Bizon 30 NL 27.1 kW

A highly efficient device that does not require special skills or knowledge to operate.

Single-circuit combined convection type unit, equipped with a thermometer and pressure gauge.

A nice addition was the detailed overheating protection system.

Convenience, reliability, high level of safety - the design has everything for comfortable work.

Specifications:

• maximum thermal power – 27.1 kW;
• heat exchanger material – cast iron;
• fuel – natural gas, liquefied gas, diesel fuel;
• coolant temperature – 30-90 °C;
• control type – electronic.

Advantages

• intuitive control system;
• no need for special maintenance;
• long warranty period;
• high technical characteristics;
• unobtrusive design.

Flaws

• The delivery package does not include an inflatable burner;
• slight noise during operation;
• easily dirty snow-white body.

Buderus Logano G125 WS-25 25 kW

An easy-to-use unit designed for long-term operation without breakdowns.

High-performance heating boiler, in the manufacture of which the most modern technologies were used.

The low-temperature device can be combined with gas and diesel fuel-powered fan burners.

High corrosion resistance is ensured by the use of special gray cast iron.

Specifications:

• maximum thermal power – 25 kW;
• heat exchanger material – cast iron;
• fuel – natural gas, liquefied gas, diesel fuel;
• coolant temperature – 50-90 °C;
• control type – electronic.

Advantages

• large selection of additional equipment;
• water-cooled combustion chamber;
• excellent quality of materials and workmanship;
• reasonable cost;
• good equipment.

Flaws

• no control panel provided;
• device dimensions;
• Questions for the instruction manual.

High power models from 30 kW

The best high-power models according to customer reviews and ratings.

Teplodar Kupper PRO 42 42 kW

The most powerful combined type unit, characterized by ease of maintenance and use.

One of the best-selling models on the domestic market, which has optimal thermal power and a basic mechanical control system.

To maintain the temperature for a long time, the manufacturer has added a high-power heating element to the equipment.

The combustion chamber in the device is open.

Specifications:

• maximum thermal power – 42 kW;
• heat exchanger material – steel;
• fuel – natural gas, coal, coal briquettes, firewood, pellets;
• coolant temperature – 95 °C;
• control type – mechanical.

Advantages

• ease of maintenance;
• sophisticated security system;
• clear instructions included;
• versatility of use;
• acceptable price.

Flaws

• device weight;
• Before installation, you must carefully study the instructions;
• dimensions.

Sime 1R6 FREEST 64.8 kW

A high-tech design that will be the best option for people living in private homes.

A classic heating device with an open combustion chamber, a basic electronic control system and a built-in thermometer.

The unit has high thermal power, so it is perfect for installation in large houses.

Specifications:

• maximum thermal power – 64.8 kW;
• heat exchanger material – cast iron;
• fuel – natural gas, liquefied gas, diesel fuel;
• coolant temperature – 60-90 °C;
• control type – electronic.

Advantages

• simple control system;
• reasonable cost of the device;
• expanded functionality;
• sufficient heated area;
• significant budget savings.

Flaws

• the burner will have to be purchased separately;
• noisy operation of the device;
• specific smell when first used.

Ferroli Atlas Evo 47

A superbly designed device that has absolutely everything for comfortable use.

Highly reliable and energy efficient equipment, presented in a compact case that does not take up much space.

The unit is distinguished by its operation with a low level of sound power, which means that it will definitely not cause any discomfort.

Specifications:

• maximum thermal power – 47 kW;
• heat exchanger material – steel;
• fuel – natural gas, coal, firewood, pellets;
• coolant temperature – 95 °C;
• control type – electronic.

Advantages

• excellent frost protection;
• preset display;
• closed combustion chamber;
• possibility of connecting external control;
• affordable price.

Flaws

• design for everyone;
• rather complicated instruction manual;
• Some items will have to be purchased separately.

Sime 1R7 FREEST 74 kW

A universal floor-standing unit with high technical characteristics.

Standard single-circuit model with an atmospheric combustion chamber, designed for floor installation.

The device can operate with a single-stage burner, but it is also possible to connect a climate regulator.

The warranty period for the device is one year.

Specifications:

• maximum thermal power – 74 kW;
• heat exchanger material – cast iron;
• fuel – natural gas, liquefied gas, diesel fuel;
• coolant temperature – 60-90 °C;
• control type – electronic.

Advantages

• possibility of connecting external control;
• high-quality assembly and excellent materials;
• simple and unobtrusive design;
• almost silent operation;
• clear instruction manual.

Flaws

• The delivery set does not include a burner;
• short warranty period;
• impressive design dimensions.

Lamborghini Calor EL DB DN EVO 32

An ultra-modern device, which is a prominent representative of the economical line.

Floor-mounted combination heating boiler with an ultra-modern design.

The device body is assembled from high-strength cast iron elements with a special arrangement of ribs, which ensures high efficiency and significant energy savings.

Specifications:

• maximum thermal power – 32 kW;
• heat exchanger material – cast iron;
• fuel – diesel fuel, natural and liquefied gas, waste oil, fuel oil;
• coolant temperature – 95 °C;
• control type – electronic.

Advantages

• high performance;
• innovative protection system;
• intuitive control system;
• simplified installation of the structure;
• enhanced thermal insulation.

Flaws

• expensive equipment repairs;
• increased sound power level;
• meager equipment.

Reviews of household solid fuel boilers: advantages and disadvantages

conclusions

When planning to purchase a combined heating boiler for heating a private home, you must remember that:

• the main criteria for choosing equipment are the maximum thermal power, the type of fuel used and the heat exchanger material;
• Increased attention also to the coolant temperature, control system and design dimensions ;
• For organizing one heating system, a single-circuit device would be a good solution, but if the device is also selected for hot water supply, you should give preference to a dual-circuit model.

Calculation of the minimum required power

Correct calculation of power will allow you to survive any frost without worries and always have warm water in sufficient quantities. The minimum required power is calculated at the rate of 1 kW per 10 m2 of heated area for a standard house with 2 bricks and a ceiling height of no more than 2.7 meters.

According to the technology, calculations are carried out separately for each room, but in practice the total area is often divided by 10 and multiplied by 1 kW. Then losses and calculation inaccuracies are added to increase the received power by 20%; if a DHW circuit is also planned, it is necessary to add another 20% reserve.

For example, the standard boiler power for heating and hot water when operating on an area of ​​150 m2 can be: (150x1)/10 = 15 kW for heating. But a power reserve is needed. 15 kW x 0.2 = 3 kW reserve for unexpected frosts, losses and inaccuracies. 15 kW x 0.2 = 3 kW for DHW. The minimum required boiler power in this case should be at least 15 + 3 + 3 = 21 kW.

Excessive power results in underutilization of the boiler, but retains the opportunity to expand its use in the future. An error in lack of power promises a loss of comfort and an inevitable rework of the heating system.

This is largely an approximate calculation; for an accurate calculation, you can involve a heating engineer or, based on SNiP 2.04.01-85, you can recalculate the hot water consumption in accordance with the standards, but you will still have to take into account the safety margin, and such an estimate will have little effect on the choice of a specific model. For a private house up to 400 m2, in more than 90% of cases the simple calculation given above is sufficient.

How to calculate the required boiler power Individual calculation, formula and correction factors

Compactness and dimensions

Electric boilers take first place in size and ease of placement.

Options:

• minimum length – 30 cm;
• weight – from 0.5 to 11 kg.

Their dimensions depend on the number of heat exchangers used and their sizes. Such devices are capable of heating rooms with an area of ​​40 to 250 m².

Single-circuit design models without a boiler are most often used in city apartments. The compact dimensions of floor-standing solid fuel boilers are characteristic of pellet products. In large private houses, double-circuit devices are installed.

Dimensions depend on the size of the fuel loading hopper. The smallest one is for 2 buckets. This amount of raw materials is enough for 1 day.

To heat large areas, large floor structures are used.

Types of coolants

For the heating system to function effectively, the working fluid must circulate correctly.

Water

This type of coolant is the cheapest and easiest way to heat rooms. If the liquid is distilled, then scale will not form in the system and on the heating elements.

It is recommended to use water radiators if you live permanently in the house. In other cases, it is better to use special non-freezing liquids.

Antifreeze

This composition is more often used for heating equipment in country houses where the owners do not live in winter.

Antifreeze does not freeze at sub-zero temperatures and prevents the formation of scale and metal corrosion. Disadvantages: high cost and toxicity of the special fluid.

The disadvantage of antifreeze is its toxicity.