Universal boilers gas electricity. Combined boilers "gas-firewood
The performance of such an installation can reach 700-750 liters of heated water per hour.
Combined heaters can be one- or two-furnace. In the second version, there is a gas burner in the lower furnace, and a wood burner in the upper one, often with pyrolysis afterburning. The heating of the furnaces occurs simultaneously, and the sedimentation of the combustion products is carried out on a tray intended for this, which is installed in the case of the use of solid fuel.
Combined heating boilers firewood gas - advantages
The advantages of this combined boiler include the following characteristics:
- the presence of two cameras - for gas burner and combustion of solid fuels;
- the possibility of connecting several boilers to one boiler heating circuits, i.e. at the same time, it is possible to heat not only the house, but also, for example, a bathhouse and a garage or other buildings adjacent to the house;
- independence of heating from power supply, and if necessary, then from gas supply;
- ease of installation and repair of this equipment - does not require special technical knowledge or high financial costs;
- The efficiency of such a boiler is 90-95%;
- the boiler does not occupy a large area, although it is desirable that it be in a separate room - the boiler room;
- minor and relatively harmless release to the atmosphere.
Selection Options
What points should be paid special attention to when choosing a combi boiler?
- The first most important parameter is the power of the device. It is she who speaks of the possibility of providing the necessary comfort temperature regime in specific buildings. Under standard conditions and calculations, 1 kW of power is required per volume of 30 cubic meters. Such parameters are suitable for a well-insulated house.
If you need to carry out an accurate calculation of power, you will have to contact specialists. To do this, they need to provide a full description of the building, which includes the region of location, climatic conditions, degree of insulation, types of heating that are already available, the purpose of the room and other parameters.
An important factor will be the gas pressure in the main line, since the efficiency of the boiler will largely depend on it. If there is a need, then in the calculation, experts will include in the data and the shortage of power.
- The second thing to consider is what you want to get from the boiler. If you plan to use it only as heater, the single-circuit option is selected. If you need to heat water, you can not do without a double-circuit model.
Double-circuit boilers can have a flow-through water heating system or, more advanced, accumulative, i.e. with built-in boiler. They take up much less space than a single-circuit boiler plus a boiler or column. Yes, and the connection will be cheaper and easier. The built-in boiler, depending on the displacement, will always have a sufficient amount of heated water. With flow heating, warm water will only flow when the device is turned on for heating.
If a single-circuit boiler is purchased, then, if desired, over time, a boiler can also be connected to it.
- When purchasing a heating boiler, it is imperative to check the availability of the enclosed certificate. Without this document, it will not be possible to obtain permission to connect to the gas supply system and register it with the relevant organizations.
Boiler installation
The room for the boiler room may be small, but always insulated. Its size must be agreed with special services that will help, if necessary, draw up a plan for wiring and connecting pipes.
Ventilation elements must also be taken into account in the room, since the removal of waste from fuel combustion is mandatory. To do this, chimneys are arranged, the structure of which directly depends on the power of the heating installation. Sometimes a chimney system comes with a heating boiler.
As mentioned above, the surface on which the boiler is installed must be strengthened, but in addition, it must be made heat resistant. Sometimes the floor under the appliance is left concrete, but it can be decorated with ceramic floor tiles.
If the floors in the room are wooden, but securely arranged, you can proceed as follows: a concrete block 10 cm thick is laid, and an eight-millimeter sheet of metal is placed on top of it. Another option is to lay refractory boards. It is very important to perfectly level the floors for the installation of the boiler. This process is carried out using the building level.
The walls near which the device will be installed must also be decorated with heat-resistant materials. The bottom of the wall is best finished metal sheets or asbestos.
When the boiler is installed, it can be connected to a heating circuit or to two circuits - water heating and heating.
For each outlet or inlet pipe to the boiler, it is best to install a separate tap - this is necessary so that, if necessary, it is possible to dismantle the device without draining the water from all circuits.
If you decide to do the installation of the boiler yourself, then when you first start it, it is best to invite a specialist in this field who will check the correct installation and control the start of the system.
Instrument operation
Boiler running on main gas and solid fuel - the best option for heating a house, since gas is constantly supplied, and there should be no problems with acquiring firewood and other solid fuels. Firewood or coal should always be kept in reserve so that they can help you out in any situation.
In addition to fuel, for heating the whole house, one cannot do without water, with which the system is filled once. Moreover, the filling process should be slow in order to prevent the formation of air bubbles inside the circuit, which can harm the uniform supply of coolant to the entire system. Periodically, usually before the winter season, the system is supplemented with water to the desired level.
It is necessary to pay special attention to this particular model of the boiler, since it works not only on gas, but also on solid fuels. All heating appliances that use wood and coal require cleaning the chimney, as fumes and soot settle on it.
It is very important to use dry firewood for heating, at least its moisture content should not be more than 20%, so it is better to buy this fuel in a special store.
Thanks to the automation built into the boiler, you will be provided with an uninterrupted supply of heated water in any case, since when solid fuel is burned, water heating with gas is automatically turned on.
Video presentation of combined gas-firewood boilers
A boiler that runs on gas and wood can be called the most affordable and convenient heating for a private house or cottage. The device is convenient and easy to use, you can cope with it without much difficulty and additional training. It is also important that it practically does not require special Maintenance.
Heating boiler Teplodar
Boiler manufacturers for autonomous heating they are constantly striving to improve existing models in order to offer customers universal designs. Their main task is to make the described installations independent of three factors. Firstly, from the availability of electricity, secondly, from the supply of fuel and, thirdly, from the presence of a person. This desire led to the creation of combined gas-firewood boilers.
How do they work? What are their main advantages and disadvantages? More about all this.
Design features
The range of heating boilers is represented by different models. Some operate on gas, others on electricity, and others on liquid fuel. Each variety has its own operational advantages and disadvantages. The disadvantages of using certain installations haunt designers and technicians. Therefore, they decided to combine some models, and combined models were born. heating devices. They can operate, for example, on solid fuel and gas at the same time.
This combination made it possible to minimize accident risks and organize the work of the same solid fuel boiler offline. How do such installations work, and where is their use more than justified? As a rule, universal boilers are always supplied with an additional number of nozzles. They can be used to connect underfloor heating, heating radiators, a greenhouse control system, heating water in a swimming pool or heating a sauna.
It is located below the combustion chamber, where firewood, briquettes, sawdust or coal are laid. Therefore, if necessary and switching, it allows you to completely burn the remaining solid fuel. If the work is transferred to solid fuel, the gas burner closes automatically. For ease of use, the steel heat exchanger responsible for space heating runs through the entire body. All walls are thermally insulated with special mineral wool, so the efficiency of the unit is almost 92%. And this is a very high figure.
The heat exchanger for hot water supply is made of copper and is located in the upper part of the unit. Copper is not afraid of corrosion, so the service life of the coil is equal to the service life of the entire device as a whole. Universal boilers have lever and air dampers that ensure the supply of the necessary portion of air.
How the installation works
The principle of operation of the gas-firewood boiler is trivially simple. The design uses two autonomous cameras. The furnace is located above the gas. This feature allows you to use two types of fuel at the same time. Gas burners are capable of operating at low pressure. Therefore, you can often see models that are not connected to the central gas pipelines, but to liquefied gas cylinders.
Note! When the electricity is turned off, the gas-firewood boiler will not be able to work on gas. And all because the products of its combustion in this case will not be independently removed through the chimney to the outside, and condensate instantly accumulates on its walls, clogging the chimney. If there is no light in the house, the boiler is heated exclusively with wood.
Benefits of installations
Boilers Karakan
There are quite a few advantages for gas-firewood boilers, so we will only indicate the most basic ones:
- The main factor is the ability to save money and use cheap firewood instead of expensive blue fuel. If the firewood runs out, you can switch to gas in automatic mode.
- The combined design allows the use of autonomous heating. Gas ensures the operation of the plant at night without additional fuel loading. It is also nice to come home after work to a well-heated house, knowing that the gas will maintain the right temperature when there is no one to throw firewood into the stove.
- Universal combined boilers can have one or two circuits, thanks to which the installation can be used not only for heating, but also for supplying hot water for technical needs. Today, universal gas-firewood boilers are understaffed with storage boilers, and there are models that can heat water to the desired temperature in a flow way. The choice is great, and it pleases.
But before deciding to purchase such installations, experts recommend studying the features of their operation and disadvantages.
Disadvantages of combined models
- Modern manufacturers produce only floor-mounted universal gas-firewood boilers. They weigh quite a lot, so transporting and installing them yourself is quite difficult. Under them, it is necessary to build a solid foundation, and these are additional costs.
- For the installation of combined installations, you will have to allocate a separate room. And this is not always possible in conditions of cramped compact housing.
- The more powerful the hardware, the fewer features it can provide. For example, a high-performance boiler does not have a freeze protection system. Not everywhere is installed a second circuit for supplying hot water.
- "Fancy" models are quite expensive. They are difficult not only to buy, but also then to maintain, using the service advantages.
- You can get the required performance in one single case - by correctly calculating the power of the unit. Experts recommend using the following formula for this - for heating every 10 square meters 1 kW of power is consumed. For double-circuit boilers, this figure increases by 30%.
Features of using universal boilers
Atmos-dc combined boiler
High thermal power a wood and gas boiler makes such installations popular with those who permanently live in rural areas. Technically, such an installation is considered solid fuel. Firewood is used for the main heating of the premises, and gas allows you to maintain the temperature at night and in the absence of the owners of the house. Therefore, when choosing a particular model, this circumstance must be taken into account.
Such a design cannot provide full automation of the installation, so the presence of a person remains mandatory. Because of this, the market price of the equipment is lower than analog automatic installations.
Such a universal boiler must be isolated from living quarters. During its operation, wood debris, dust from burning or ash often gets into the room where it is installed. It is safer to store firewood separately from the unit, so having an additional utility room is a must.
The automation system is powered by the mains, so the described equipment is volatile. For greater operational safety, universal heating boilers must be connected to an uninterruptible power supply, and also have a voltage stabilizer.
In addition to electricity, double-circuit models are also connected to the water supply. Therefore, to install the boiler, you need to find a place so that everything is nearby - gas, water and electricity.
Note! For the operation of the firebox, you can use firewood, the moisture content of which does not exceed 20%.
You can install the described units yourself, but asking for help from specialists will provide an additional bonus in the form after-sales service. They are worth using.
What is needed to start a universal boiler?
Installing gas heating
When installing a combined boiler, a number of requirements must be observed:
- The gas burner is fixed with screws, and the connection to the mains is carried out with the permission gas services. Their representatives must come and check compliance with safety standards, as well as install and seal the meter.
Note! The kit of the universal gas-firewood heating boiler does not include a union nut, with which the unit is connected to the gas pipeline. Therefore, you must first buy it yourself.
- After connecting, it is advisable to check all joints for tightness.
- To connect the automation, a separate electrical cable is carried out, and its grounding is performed.
- It is better to delegate all commissioning works to specialists.
Generalization on the topic
Today, a universal combined boiler - the best solution for country house. The availability of fuel and high efficiency allows you to create comfortable living conditions and independently choose which types of fuel will make your home as comfortable as possible for life.
When choosing a method of autonomous heating, owners of a private house often face a difficult choice. On the one hand, you should choose a model for the cheapest fuel so that heating costs are minimal. On the other hand, it is difficult to get full confidence in the possibility of a continuous supply of energy, which is especially true for centralized pipelines (gas, electricity).
Therefore, combined options are becoming increasingly popular, for example, a wood and gas boiler. This is the only way to guarantee that the heating season will run with a stable heat supply. Moreover, the choice is not limited to such modifications. Pellets are combined with electricity, coal with wood models, for example, as in combined boilers. Universal heaters easily allow you to bypass seasonal tariff increases, as well as, for example, use nightly price reductions, etc.
Combined modifications, for example, a wood-gas-electricity heater, are often installed to replace old wood-burning stoves or their coal-fired counterparts. firewood and coal are the most affordable in all regions of our country, while they have a relatively low price. The heating system itself is often not redone, limited to replacing a wood-burning boiler with a combined model.
Varieties of combined boilers
Separate universal heating equipment depending on the type of fuel used.
Rice. one Internal constructioncombined boilers
So, the following combined options are distinguished:
- Gas + Solid fuel. Allows you to quickly replace the main gas when it was turned off as a result, for example, of an accident on the line. A wood and gas boiler is one of the most popular solutions due to the good availability of wood.
- Gas + Liquid fuel. Such options are convenient in case of periodic failures in gas supply, but require the organization of storage of diesel fuel stocks.
- Gas + Electricity + Liquid fuel. A combined option for savings in the absence of a guarantee of timely supplies of gas and diesel fuel.
- Gas + Solid and liquid fuel. One of the most versatile models for heating cottages. Great replacement for wood burning stoves.
- Gas + Solid and liquid fuel + Electricity. This model makes the owner of a private house completely independent of tariffs and other factors that affect the change of energy carrier. For example, a wood-gas-electricity appliance.
There are universal boilers without connection to a gas main, for example, for coal and firewood with the ability to connect heating elements to be powered by electricity. Heating boilers combined gas firewood are often installed in conditions of interruptions in gas supply. Firewood for heating, including special granules (pellets), causes less inconvenience during storage than other types of fuel. Yes, and there is no smell, as, for example, from diesel fuel (and a gas boiler, sometimes, gives a slight smell).
Another option - a combined gas-firewood-electricity boiler - allows you to become completely autonomous with any changes in tariffs and in other situations. For a wood-gas-electricity device, you don’t have to worry about the same firewood stocks, power outages, etc.
Features of gas-fired boilers for the home
First of all, it is worth noting that in most cases, the gas main is taken as the main fuel, and wood heating in the event of a shutdown, they are transferred to periods of maintenance or accidents. Of course, for a completely universal approach, it is worth installing a combined wood-gas-electricity appliance, but not everyone can be satisfied with the cost of electricity.
In general, combined boilers can be fired with different solid fuels, almost without changes in its design. So, firewood, coal, briquettes, pellets - everything is on the same level in terms of prevalence, the choice depends on the price of different kinds in one region or another. That is why gas-fired boilers are popular, solid fuel is easy to replace with an analogue.
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Secondly, it is important to consider that solid fuel boilers are made of steel and cast iron, which makes them resistant to constant high temperatures during heating season. This is especially important if coal is used as fuel, which gives noticeably more high temperature in the furnace.
But that also adds to the hassle. The heavy weight of the equipment in some cases requires the strengthening of the flooring in the room in the house allocated for its installation. Cast iron boilers for heating gas-firewood require this without fail. Gas-fired modifications made of light grades of metal can be mounted on a regular floor, in place of the previously occupied wood or coal stove. Wood-gas-electricity appliances are usually light in weight.
There are two more types of combined models: single-circuit (they work only for heating the heating system) and double-circuit (the second circuit heats water for the water supply system in the house). So, the gas-firewood device can be used as a boiler even in the warm season. The same applies to the device firewood-gas-electricity.
It is also worth noting this feature. In addition to the removal of smoke through the pipe when burning with solid fuels, there are solid combustion products that settle in the pan and require periodic disposal.
The most interesting boilers for heating are universal gas-firewood-pellets, which have the ability to battery life without human intervention for a long time. Such a heater, instead of wood or gas, is able to work with special granules. Such a combined option eliminates the need to stock up on firewood, because. pellets are usually always on sale. Alternatively, a combined boiler is still convenient.
The most advantageous sides of boilers heating gas firewood
If we put aside the requirements for arranging a separate room in the house, heating boilers combined firewood gas will type a whole set of excellent qualities.
- The operation of such a universal heating device does not require special skills. Even options such as combi boilers.
- The cost of combined models is slightly higher than analogues that can only work, for example, with coal, pellets and a gas version. You can mount it instead of a wood-burning stove, they take up even less space than usual.
- Dimensions of gas-fired heating model, of course, more gas models, but do not exceed analogues with a wood-burning firebox. The wood-gas-electricity device has the same dimensions.
- High efficiency - up to 90%. The wood-burning method of heating a room is one of the most effective, the main thing is to use dry, no more than 20% humidity, firewood.
- Small emission of harmful substances into the atmosphere.
Compared to heating with electricity or gas boilers heating boilers combined gas firewood are able to give complete independence from utilities. wood stoves have always been used as the basis of warm home comfort, tk. this type of fuel is the easiest to get anywhere.
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What to pay attention to?
When selecting a model, it is necessary to take into account several rules, non-observance of which will lead to an error. As a result, the boiler may not be suitable for a particular house, for example, it may not be powerful enough and the room will be cold. For example, a wood and gas appliance is dependent on the pressure in the line, and when it is lowered, it can give off noticeably less heat.
AT technical specifications usually, in addition to power, the area of \u200b\u200bthe house for which it is designed is indicated. The calculations are made by professionals and it is quite accurate. You can use various tables found on the Internet. Particular attention should be paid to power when choosing the most versatile options, such as a wood-gas-electricity appliance.
It is worth considering the possible decrease in gas pressure in the line. This can significantly reduce the heating power. In the absence of a “reserve”, you will also have to use additional heaters powered by electricity. There is no point in heating with such characteristics, it will have to be modernized and incur additional costs.
The next step is to determine the purpose of the combined boiler for heating. It can be purchased both as the main source of heat and for additional heating of running water, i.e. immediately choose the combined option.
Such a boiler is more profitable than a separate boiler, because wood or gas is already consumed for heating, and a separate water heater is usually powered by electricity. Wood heating often allows you to win also in the speed of reaching the desired temperature.
Are there any features in operation?
When buying a combi boiler with wood and gas heating it is necessary to take into account several operational points, without which the use of firewood as the main source of heat can lead to the fact that the universal method will cause considerable problems.
So, a wood-burning boiler during its operation gradually clogs the chimney with soot, which must be periodically cleaned. Without this, the efficiency of smoke removal will gradually decrease, up to the appearance of problems with ignition, smoke in the room, etc.
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If heating on gas or electricity can operate continuously, then the wood-burning boiler burns out completely after a maximum of 3-4 hours, after which the heating system inevitably begins to cool down. Loading a new portion is done manually, which requires the presence of the owner's home. Therefore, often combined modifications with wood or pellet fuels are used, if possible, in gas heating mode.
Pellets partly allow you to automate the procedure for heating with wood fuel, but you still have to follow the process. Yes, and the stock must be created in advance, otherwise you can be left without heating at the very cold period of the year.
Why are combined firewood heating boilers gaining popularity? When choosing a heater for the home, you need to rely on different criteria for the product and take into account its various parameters. But you should start with the availability of a certain type of fuel at the place of the planned installation of the boiler, and from that, on which of the species will be the main rate.
It should be noted that combined boilers are currently being produced that can operate on gas, solid or liquid fuel and electricity, and, the transition from one to another type of fuel occurs automatically. Such options are good because there is always an alternative to one or another source of energy, and in any case it will be warm in the house. In addition, significant savings can be achieved.
If gas is supplied to the house, there are no problems with heating. There are a large number of heating boilers operating on this fuel on sale, so you can easily choose the right one. However, if there is no shortage of solid fuel, and there is a desire to save on natural gas, then combined boilers for heating wood gas are on the market, which have a number of positive qualities.
Universal boiler - for all types of fuel
In any case, when choosing a heating device, it is better to rely on the knowledge of specialists, with whom you need to consult on the water characteristics and operation of a particular heating device.
Characteristics of the boiler gas-firewood
This boiler can work not only with wood, but also with other solid fuels such as briquettes, coal and pellets.
Combined boilers have a lot of weight, as their design includes parts made of cast iron, such as a combustion chamber. Therefore, when installing such equipment, it may be necessary to strengthen the floors by making a separate foundation for them.
Gas-firewood boilers are manufactured in two versions:
- single-circuit, which are used only for heating the building;
- double-circuit, allowing not only to bring heat into the house, but also to provide the family with heated water.
The productivity of such an installation can reach 700-750 liters of heated water per hour.
Combined heaters can be one- or two-furnace. In the second version, there is a gas burner in the lower furnace, and a wood burner in the upper one, often with pyrolysis afterburning. The heating of the furnaces occurs simultaneously, and the sedimentation of the combustion products is carried out on a tray intended for this, which is installed in the case of the use of solid fuel.
Combined heating boilers wood gas - advantages
The advantages of this combined boiler include the following characteristics:
- the presence of two chambers - for a gas burner and combustion of solid fuels;
- the possibility of connecting several heating circuits to one boiler, i.e. at the same time, it is possible to heat not only the house, but also, for example, a bathhouse and a garage or other buildings adjacent to the house;
- independence of heating from power supply, and if necessary, then from gas supply;
- ease of installation and repair of this equipment - does not require special technical knowledge or high financial costs;
- The efficiency of such a boiler is 90-95%;
- the boiler does not occupy a large area, although it is desirable that it be in a separate room - the boiler room;
- minor and relatively harmless release to the atmosphere.
Selection Options
What points should be paid special attention to when choosing a combi boiler?
- The first most important parameter is the power of the device. It is she who speaks about the possibility of providing the temperature regime necessary for comfort in specific buildings. Under standard conditions and calculations, 1 kW of power is required for a volume of 30 cubic meters. Such parameters are suitable for a well-insulated house.
If you need to carry out an accurate calculation of power, you will have to contact specialists. To do this, they need to provide a complete description of the building, which includes the region of location, climatic conditions, degree of insulation, types of heating that are already available, the purpose of the room and other parameters.
An important factor will be the gas pressure in the main line, since the efficiency of the boiler will largely depend on it. If there is a need, then in the calculation, experts will include in the data and the shortage of power.
- The second thing to consider is what you want to get from the boiler. If you plan to use it only as a heating device, a single-circuit option is selected. If you need to heat water, you can not do without a double-circuit model.
Double-circuit boilers can have a flow-through water heating system or, more advanced, accumulative, i.e. with built-in boiler. They take up much less space than a single-circuit boiler plus a boiler or column. Yes, and the connection will be cheaper and easier. The built-in boiler, depending on the displacement, will always have a sufficient amount of heated water. With flow heating, warm water will only flow when the device is turned on for heating.
If a single-circuit boiler is purchased, then it is possible, if desired, to connect a boiler to it over time.
- When purchasing a heating boiler, it is imperative to check the availability of the attached certificate. Without this document, it will not be possible to obtain permission to connect to the gas supply system and register it with the relevant organizations.
Boiler installation
The room for the boiler room may be small, but always insulated. Its size must be agreed with special services that will help, if necessary, draw up a plan for wiring and connecting pipes.
Ventilation elements must also be taken into account in the room, since the removal of waste from fuel combustion is mandatory. To do this, chimneys are arranged, the structure of which directly depends on the power of the heating installation. Sometimes a chimney system comes with a heating boiler.
As mentioned above, the surface on which the boiler is installed must be reinforced, but besides this, her must be heat resistant. Sometimes the floor under the appliance is left concrete, but it can be decorated with ceramic floor tiles.
If the floors in the room are wooden, but arranged reliably, you can proceed as follows: a concrete block 10 cm thick is laid, and an eight-millimeter sheet of metal is placed on top of it. Another option is to lay refractory boards. It is very important to perfectly level the floors for the installation of the boiler. This process is carried out using the building level.
The walls near which the device will be installed must also be decorated with heat-resistant materials. The lower part of the wall is best finished with metal sheets or asbestos.
When the boiler is installed, it can be connected to a heating circuit or to two circuits - water heating and heating.
For each outlet or inlet pipe to the boiler, it is best to install a separate tap - this is necessary so that, if necessary, it is possible to dismantle the device without draining the water from all circuits.
If you decide to do the installation of the boiler yourself, then when you first start it, it is best to invite a specialist in this field who will check the correct installation and control the start of the system.
Instrument operation
Boiler running on main gas and solid fuel - the best option for heating a house, since gas is constantly supplied, and problems with acquiring firewood and other solid there should be no fuel. Firewood or coal should always be kept in reserve so that they can help you out in any situation.
In addition to fuel, for heating the whole house, one cannot do without water, with which the system is filled once. Moreover, the filling process should be slow in order to prevent the formation of air bubbles inside the circuit, which can harm the uniform supply of coolant to the entire system. Periodically, usually before the winter season, the system is supplemented with water to the desired level.
It is necessary to pay special attention to this particular model of the boiler, since it works not only on gas, but also on solid fuels. All heating appliances that use wood and coal require cleaning the chimney, as fumes and soot settle on it.
It is very important to use dry firewood for heating, at least its moisture content should not be more than 20%, so it is better to buy this fuel in a special store.
Thanks to the automation built into the boiler, you will be provided with an uninterrupted supply of heated water in any case, since when solid fuel is burned, water heating with gas automatically turns on.
Video presentation of combined gas-firewood boilers
Boiler running on gas and wood can be called the most affordable and convenient heating for a private house or cottage. The device is convenient and easy to use, you can cope with it without much difficulty and additional training. It is also important that it requires almost no special maintenance.