Thermal gas gun. Operating principle and rules for choosing a gas heat gun Gas heating guns

Gas heat gun can be used for heating residential premises, warehouses, garages (from 4 kW), greenhouses and farms. It is also actively used for construction. Many Russians prefer them to electric and diesel counterparts.

Advantages:

• High ratio useful action(about 100%);
• Inexpensive fuel;
• No smell;
• Low cost of generating 1 kW of heat.

Gas heater: operating principle

Passing through the gas burner, the sucked air is heated and then “pushed out” by the electric fan, spreading evenly throughout the room.

How to turn on a gas heat gun:

1. Install gas hose, secure the gearbox to the source. Connect.
2. Connect to a 220 V power supply, grounding is required. Turn on.
3. Open the cylinder valve all the way, press the reducer button and hold for 1-2 seconds (to normalize the pressure).
4. Press and hold the gas button, press the piezo ignition 2-3 times. After tanning, hold for 15 s.
5. Adjust the power using the gearbox.

Gas heat guns: types

• Connection to a gas pipeline or to compressed gas cylinders (propane or butane). If you are planning stationary use of a heat gun in a building where there is main gas pipeline– it’s more rational and safer to choose a model that runs on methane (on natural gas).
• By type of heating - direct and indirect. Gas-powered thermal heaters produce practically no harmful combustion products, but without an exhaust exhaust system, working in closed and poorly ventilated residential areas is prohibited and extremely dangerous. Industrial indirect heating guns with gas exhaust are placed outdoors, and heat is supplied through an air duct. They can produce from 30 to over 100 kW.
• Single-phase and three-phase. Connection to a household (220 V) or industrial network (380 V). Electricity is needed to power the fan.

From us you can buy gas heat guns used for temporary heating of premises. Good for heating cottages, garages and other similar premises. The equipment is also suitable for accelerating the drying process of plastered surfaces.

For space heating

We offer heat guns from domestic and foreign manufacturers. The user receives for use modern equipment, which has the following advantages:

• rapid heating of air masses;
• low fuel consumption;
• compact dimensions and light weight.

For suspended ceilings

Price for gas heat guns for installation suspended ceilings is at an accessible level. The equipment consumes a minimum amount of fuel. When using, high-quality ventilation in the room is required.

Indirect heating

Buying a gas gun with indirect heating means becoming the owner of powerful and safe equipment. All combustion products arising during operation are forcibly removed through a special pipe from the closed chamber in a constant mode. The special design automatically solves the problem of the concentration of toxic elements in the air.

30 kW

We offer to buy gas heat guns in Moscow with a heating power of 30 kW. Industrial-type equipment is suitable for providing heating in factories and warehouses. It is also possible to use it on construction sites in order to reduce the level of humidity and dry materials. The housing of the equipment has an anti-corrosion coating.

Prices for industrial heaters with a power of 18 kW

Gas guns with a maximum power of 18 kW belong to the category of industrial heaters low power using propane-butane or propane for operation. In addition to their small dimensions, which facilitate transportation and storage, they are characterized by low cost.

In particular, a gas gun is actively used for heating rooms, which has sufficient potential to maintain optimal temperature regime vast space. But such a unit must be chosen wisely, focusing on technical specifications and scope of application, otherwise it will not bring the expected effect. Moreover, you will have to choose between:

• Liquid fuel devices,
• Gas units,

If the object is just being built and it is necessary to ensure drying of the walls and maintain normal conditions for construction crews working in the premises, then gas heat guns using natural gas will be quite suitable, as well as.

Advantages of this heat gun

What should you consider if you decide to choose a gas heat gun? These are the capabilities of this equipment and its technical parameters. The advantages of such units include:

• High performance
• Environmental friendliness,
• Waste-free combustion of the fuel used.

So a gas gun for heating rooms may be quite suitable as an environmentally friendly and efficient equipment. , which is used for such devices, is capable of burning without a residue and providing absolute efficiency. Operation of this equipment is possible both from gas pipelines and from portable cylinders.

The principle of operation of gas guns

If you read gas guns for space heating reviews, some users do not quite understand how such units work, which significantly complicates repair work if such a need arises.

Liquefied fuel is supplied to a special chamber, where it is atomized and mixed with air masses. And if you plan to repair master gas guns, then you need to check the ignition system, which is based on a piezoelectric element; it is this element that makes equipment of this type independent from external sources energy.

Direct and indirect air heating

When an indirect heating gas gun is selected, all combustion products generated during operation will have to be forced out, and a dangerous concentration of toxic elements will not arise in the room. Such equipment can be used to heat residential premises, and the process can take place in a constant mode.

We can consider these to be the best gas heat guns in terms of safety. They have closed chambers in which the combustion process of natural gas occurs, and waste materials are discharged through a special pipe.

But there is one negative factor These units have a high cost. And if you analyze the gas heat gun Interskol TPG 30 reviews, it turns out that such equipment is not available to everyone, and repairs are too expensive.

Direct heating is produced by an open burner, and the combustion chamber is not closed, so that heat and combustion products enter the room. And this factor makes the use of such devices in residential premises dangerous. But you can always repair a gas gun with your own hands if it direct action, since the design of such equipment is much simpler.

Which gas gun to choose?

If you have sufficient funds to purchase this device indirect action and the possibility of carrying out such procedures as modifying the gas gun to ensure constant removal of combustion products from the pipe and to the street, you can afford to purchase this particular unit.

Especially if it is intended to be used in residential premises where people will constantly be present. For direct heating, construction sites where you need to create optimal temperature, but the presence of people is temporary.

In buildings that are not equipped or connected to the system central heating, a gas gun is often used to heat rooms. This mobile and easy-to-use device with a thermostat is able to quickly heat the air in the room and maintain a comfortable microclimate at a given level. Therefore, many owners of country and private houses, as well as industrial premises, prefer gas guns to their diesel counterparts.

Heating equipment of this class is used as a permanent or temporary heat source. In fact, a gas gun is an ordinary fan heater, but on gas, which, due to its design features, has high level efficiency and expanded functionality. The device allocates to the room warm air, which is formed during the combustion of fuel.

The device is placed in a metal case, which has outlet openings designed to allow hot air to escape. Inside the body the heat gun contains:

• fan;
• burner;
• control device;
• heat exchanger;
• ignition device;
• thermostat.

In addition, inside the case can be placed additional elements, depending on the type of model and design features.

How does a gas gun work:

1. A burner is placed in the combustion chamber, where gas is supplied.
2. The device that provides ignition ignites the fuel, due to which the heat exchanger heats up.
3. The fan draws in cold air and directs it back through the heat exchanger structure.
4. Equipment protection from overheating and malfunctions is provided using a thermostat.
5. When the air in the room warms up to the set point, the thermostat is activated and the switch breaks the electrical circuit, causing the gun to stop working. When the temperature drops a few degrees, the device turns on again.

This operating principle gas appliance heating allows you to maintain an optimal microclimate in the room.

Gas-powered heat guns have a number of advantages. Among the most significant advantages are the mobility of the units, simple operation, as well as the affordable cost of units that operate with bottled gas. In addition, this type heating devices has a high efficiency index, with minimum consumption electrical energy.

Types of gas heat guns

Gas heating guns come in two types, depending on the fuel consumed. Some operate only on liquefied gas, which is in a cylinder - propane or butane. The second type of device is universal and can operate on any type of gas, because their body contains an element that ensures pressure stabilization. The presence of this component allows you to connect the device directly to the gas main.

Depending on the type of fuel consumed by the device, it may have certain characteristics. The gas pressure in the general network varies between 0.015-0.02 MPa, so the devices are designed for different inlet pressures. But at the output, the reducer installed on the gas cylinder has an indicator of 0.036 MPa.

The differences between these types of units also affect the nozzles, which may have different diameter nozzles, because the caloric content of natural and liquefied gas is significantly different. Bottled gas is three times more caloric than main gas, so if the functions of the gun do not provide for the use of main fuel, then you should not connect to it a heater designed only for bottled liquefied fuel.

Attention! During the operation of a heat gun, oxygen is necessarily burned out. Therefore, these devices are not recommended for use in rooms without ventilation system. This is life-threatening!

Based on the type of construction, there are only two types of these devices: a gas gun of indirect heating and direct heating. Let's look at the features of each variety.

Direct heating device

The design of a direct-heating gas gun is not equipped with a function for purifying air flows from burning, so in residential areas they can poison oxygen. This is the only but very significant drawback of these devices, which forces consumers to make a choice that is not in their favor.

At the same time, direct heating units have an efficiency of 100% and during their operation consume a minimum amount of fuel and electricity.

The design of direct heating equipment is quite simple: a fan and a burner are placed inside the housing, heating cold air currents, and the fan blows them into the space, creating a powerful stream of air.

Indirect heating device

Gas heat gun with indirect heating as heating element uses a heat exchanger ring type. The working process of these devices differs from direct models in that fuel is first burned inside the housing, and then toxic products that are released as a result of the combustion process. Therefore, this type of guns is considered environmentally friendly and absolutely harmless to human health.

For obvious reasons, devices with indirect heating are popular among consumers for heating homes. Installation of such guns is allowed even in rooms with poor ventilation systems.

However, this design also has one, but very significant drawback - the presence of a chimney pipe in the body, which reduces the mobility of the device and creates difficulties in its transportation.

Pay attention! Compact models of guns powered by natural gas are very economical. The unit consumption is only 1 l/h.

Areas of application of gas guns

The popularity of gas heat guns is determined by their safety, practicality and wide range of applications. These devices are used not only for heating living rooms, but also for domestic needs: drying objects with large dimensions, as well as for ventilation of rooms.

Operating a gas gun in a garage will create conditions for normal starting of the car, as well as performing repair work. In addition, the gas gun is in demand not only in living conditions, but also in production. This equipment is used for high-quality and economical heating of greenhouses, greenhouses where vegetables, seedlings and flowers are grown.

A gas gun is a self-contained heating device, but it can also become structural element an entire installation, which is designed to maintain the necessary microclimate in the room. Structures that run on natural gas can be used to heat automotive, agricultural and specialized equipment.

The capabilities of this device are often used during repairs, when it is necessary to quickly dry walls after puttying. In addition, this type of equipment is used when installing suspended ceilings, since the fan built into the structure speeds up these processes.

Besides, functionality Gas heat guns will be useful in large areas, the size of which exceeds 25 m².

How to choose a gas heater?

To select a device with suitable parameters, the following characteristics must be taken into account:

• the material from which the building is constructed (brick, stone or metal);
• quality of thermal insulation (types and features of internal and external insulation);
• absence or presence in the room electrical wiring(without electricity the gun will not be able to work);
• features of the ventilation system;
• total area of ​​the room;
• operations that take place indoors.
• manufacturer and level of product quality;
• gas gun body shape;
• heating method (direct or indirect);
• unit power level;
• dimensions of the device.

In addition, it would be a good idea to read reviews from other consumers who have already purchased and used the device.

Frequent breakdowns and their elimination

Common problems with gas guns and possible causes:

1. The flame goes out when the forced fuel supply button is released - this may indicate a breakdown of the safety sensor.
2. There is no ignition when gas is supplied - there may be no spark in the design, so adjustment of the piezoelectric element may be required.
3. The fan operates without fuel supply - this sign indicates a malfunction of the solenoid valve.
4. It is not possible to adjust the fuel supply while the device is operating - most likely, the gas line is clogged.
5. During operation, a strong smell of carbon monoxide appears - the device requires cleaning and adjustment of the gas pipeline on the heat generator. You must immediately turn off the equipment and under no circumstances continue to use it.

Important! It is better not to risk trying to repair the device yourself. All repair work should be performed by a professional.

How to make a gas gun with your own hands?

If your knowledge and experience allow you to make such a complex heating device yourself, then you can make an indirect heating gas gun with your own hands.

To make the device you will need:

• two pipes 1 m long and with a diameter of 18 cm (body) and 8 cm (combustion chamber);
• pipe with a diameter of 8 cm and a length of 30 cm (outlet pipe);
• axial type fan with round flange;
• gas burner equipped with a piezoelectric element.

Before you start creating a device, you should carefully study the diagram, which will become a guide during the work process.

Do-it-yourself gas heat gun manufacturing technology:

1. First you need to take the pipe from large size diameter and make a couple of holes. The size of one of them is 8 cm. An outlet pipe for heated air will be attached to this hole. The size of the second is 1 cm. This hole will be used to fix the gas hose. You need to make a combustion chamber from a pipe with a diameter of 8 cm.
2. Then you need to assemble the plug. It can be cut from a sheet of metal. This part must cover the gap between the housing part and the combustion chamber. At the same time, it is very important not to block access so that it is possible to connect the structure to the chimney.
3. After this, all the elements come together. For this you will need welding machine and skills to handle it. The combustion chamber along with stiffeners is welded inside big pipes. A pipe and a plug are fixed from the outside. Through this element, heated air will enter the room. All that remains is to install the gas burner and fan. All elements must be firmly fixed.

Useful advice! To keep the combustion chamber firmly in the central part of the housing, it is better to use plates that are welded to the pipe.

The process of assembling a direct fired gun is much simpler. Such a device consists of a pipe, at one end of which a fan and burner are attached. Combustion products and hot air flows will come out from the opposite side.

Safety precautions when operating a gas gun

A gas heat gun is very simple to use. If you follow the rules of its operation, the equipment will not pose any danger to human life or health.

Basic safety rules when operating a gas heat gun:

1. Do not dry shoes, clothes and other items on the device body, as well as any actions during which the air duct or air collector may be blocked.
2. The device housing and fan must be protected from moisture.
3. It is imperative to use wiring with a power corresponding to technical parameters apparatus.
4. Do not operate the unit in a dirty room with a high concentration of dust.
5. In a building where a direct heating gun is used, it is necessary to organize good ventilation.
6. You can't bet on close range dangerous and flammable substances from the device.
7. The area where the gas hose is attached to the fuel cylinder must be checked for complete leaks. Leaks are not allowed.
8. The gas is much heavier than air, so it can accumulate at the bottom of the room, creating an explosive situation. Therefore, it is prohibited to operate gas guns in rooms that are below ground level.

Before turning on the device, you need to read the operating instructions, which describe all the nuances of connecting and using the device.

Thus, a gas gun for heating rooms is an economical, safe and compact device with high efficiency, therefore these devices are considered the best way heating air in buildings with different areas and large volume. Such units can become an alternative to the standard heating method.

Heat guns are one of the most powerful tools for heating a room. They are an analogue of traditional heaters, but with significantly greater power and a convection system that blows out a powerful heat flow. On average, a gas heating gun with a capacity of 10 – 15 kW capable of 20 minutes in a room with an area of 150 m2 raise the temperature by 5 – 10 ℃ . Traditional electric heaters simply do not have such power, since only industrial electrical networks can withstand such a load.

“Gas guns” are based on the most common burner (burner), which heats the air by burning oxygen to form carbon dioxide and fumes. All this mixture is blown out of the combustion chamber using powerful fan, driven from the electrical network.

Unlike diesel guns, in gas engines, during combustion of fuel, a minimal amount is formed harmful substances and carbon monoxide, so they require less performance forced ventilation. But at the same time, their heating speed and power are identical. And, by the way, the design of gas guns is simpler than that of diesel ones, so they break extremely rarely (only if operating rules are violated), and manufacturers give a guarantee, on average, for 3 – 6 years for such devices.

Closed and open guns

Conventionally, all gas guns are classified into open and closed:

• Open(direct heating). Have more simple design, the burner is open, all combusted gases enter the room. Required for normal operation require high-quality ventilation of the heated room.

Open burner gun. A more common option, but it can only be used in those rooms where there is normal supply ventilation. Otherwise, carbon dioxide accumulates and carbon monoxide, and it is extremely dangerous for a person to be in such a room

• Closed(indirect heating). The burner is closed, and there is also an outlet for removing waste gas. Such guns are less powerful and effective and require mandatory connection to the chimney, but are absolutely safe (and they are powerful to use even in small living spaces). Either air heating elements or radiators (ring heaters) are used as a heating element.

Closed type heat gun. IN in this case— installed outdoors, and warm air is supplied through a special air duct

As a rule, open ones are used in non-residential premises ( garage, shed, warehouse), closed - in residential areas or in those where there are problems with ventilation.

Classification by connection type

Gas guns according to the type of connection and the fuel used are divided into:

1. Methane. These are connected directly to the household gas distribution network. It is also possible to supply methane from cylinders, but these are not refilled at all gas stations (the process itself is long and requires the use of special equipment).
2. Propane. They operate on a propane-butane mixture and are connected to cylinders. These are more common, since propane is quite cheap, filling it into a cylinder takes a minimum of time.

Prices for the MASTER BLP 17M gas gun range

Gas gun MASTER BLP 17M

Pros and cons of heat guns

The obvious advantages of gas heat guns include:

• low cost;
• simplicity of design(most of the breakdowns can be quickly fixed on your own);
• saving(heating is much cheaper than with guns on diesel fuel, “working out” or electricity, some models are even connected to the household gas distribution network);
• high power with small dimensions and weight ( average weight guns with all body kit - from 5 to 15 kilograms, depending on power);
• There are models with support for connecting electricity via batteries (operability does not depend on the availability of an electrical network);
• much safer than diesel ones.

Such a gun in 1 hour active work burns about 1.5 - 2 liters of gas (at maximum power). And this is enough to heat a room over 200 square meters. Electric heater for this it will spend at least 40 kWh of energy, which will cost several times more (and it will take much more time)

But they also have disadvantages. The significant ones include:

• gas is used as fuel; if the rules of operation of the device are violated, this will lead to fire;
• necessary high-quality heated room (otherwise you can get carbon monoxide poisoning);
• require regular maintenance(in particular, cleaning the gas supply system, changing filters, and so on);
• uneven heating rooms (warm air accumulates at the top, cold air sinks to the floor, the temperature difference can reach 20 degrees).

Prices for the range of gas guns SPEC IGE-15

Gas gun SPEC IGE-15

Additional features

From additional functions in gas heat guns there are:

1. System automatic arson. It works either from the mains or as a mechanical piezo element. If they are absent, the device is started manually (by bringing a match or any other burning element to the burner nozzle).
2. Rotation speed adjustment fan This functionality allows you to adjust the power of the air flow. For small rooms – less, for large ones – more.
3. Gas supply adjustment. Used to turn on “turbo mode”, when the heating element heats up in literally 10 - 20 seconds. Allows you to start heating the room instantly.
4. Availability additional sensors . These include a gas leak sensor, a gas pressure reduction sensor, a thermostat (responsive to temperature environment), position indicator (if the gun accidentally tips over, it blocks the gas supply and the device turns off).
5. Thermocouple. Allows the fan to automatically adjust the rotation speed depending on the temperature in the combustion chamber or heating element.

Manufacturers also began to produce automatic gas guns that operate on the principle of conventional electric heaters with a thermostat. That is, they turn on and off automatically, maintaining the room temperature at a given level. However, the response threshold of such devices is high, so you should not count on careful adherence to temperatures down to 0.5 degrees.

Video - Gas gun, garage heating (is it worth taking)

Find out how to choose for a private home in a special article on our portal.

How to make a gas gun with your own hands - step-by-step instructions

Knowing the operating principle of the simplest gas gun, you can understand that making the same design at home yourself will not be a problem. The main thing is to select components. As a body, you can use either a piece of galvanized pipe on the outside, with a diameter of 100 mm(recommended - 200 mm), and any primus stove is suitable as a burner (preferably with adjustable fuel supply intensity to the burner). All this can be purchased at a construction or household goods store.

Another nuance is forced convection. With a powerful gas flow, it is not necessary to install a system that will independently blow out heated air. The main thing is to use a pipe not with sealed ends, because in this case air flow is created automatically (due to the difference in air temperatures at the ends of the cylinder).

If convection is still necessary, then a regular one is simply installed from the back of the pipe. household fan. The main thing is to adjust the rotation speed of the blades so that the air flow created does not lead to extinguishing the burner. As a rule, 200 – 300 rpm enough.

Aluminum container as a gas gun. The advantage of this design is the high heat transfer coefficient. But the durability of this option is debatable.

In total, to create a gas gun with your own hands you need:

Step 1. Select a suitable housing. Ideally - steel pipe with a diameter of 200 mm and no less long 80 centimeters.

Step 2. Prepare a hole in the upper part of the pipe for installing a nozzle with a burner. This can be done using a step drill. Standard nozzle inlet - approx. 25 mm(then you can install a water tap, but a gas tap is recommended - they are structurally different).

Step 3. Install the burner. All this is secured to a washer or coupling that is tightened on the outside of the pipe. A fireproof sealant (automotive sealant, the one used when installing gaskets in the cylinder block) must be added under all fasteners to avoid gas leakage and backdraft in the combustion chamber.

Step 4. If necessary, install a fan behind the pipe. It is not necessary to make everything airtight, the main thing is to create a directed air flow.

Step 5. Connect the resulting gun to a gas source (propane or methane - depending on the type of burner installed) and conduct a test run. Automatic ignition in such a system, of course, is not provided, so the burner will need to be started manually.

During a test run, the most important thing is to make sure no gas leakage(recheck all connections), as well as the normal heating of the burner (it should not overheat, become covered with soot or turn red).

The test run and performance check are carried out outdoors and not indoors. But it should be remembered that such devices are very dangerous, therefore, without proper experience, trying to make them yourself is not a good idea. best solution. And when working with them, there must be someone nearby so that if any breakdown occurs, they can immediately turn off the device.

You should not use self-made heat guns specifically for heating. They are better suited for quickly drying a room or for heat treatment of surfaces (for example, to combat mold and mildew).

Video - DIY gas heat gun

How to choose a gas gun in a store and what to look for

When choosing a gas gun for household use You should first pay attention to the following parameters:

1. Power. It is measured in kW; sometimes manufacturers additionally indicate the volume of heated air per 1 hour of operation. In the first case, the formula is followed: 1 kW on 10 m 2– minimum. Secondly, it is necessary to calculate the total volume of the room planned for heating with a gun and divide the resulting figure by 2. This will give the minimum power of the gun, with which the room can be heated within just 30 minutes continuous operation of the heater. For example, the volume of air heated by a gun is 300 m 3. Accordingly, it is optimally suited for a room with a volume of 150 m 3(volume and area should not be confused - these are completely different indicators).
2. Connection type. This means with a closed or open burner. The first ones are more expensive and they are used for “emergency” heating of residential premises. It is not worth buying them for other purposes. Open – best option for garages, sheds, warehouses and others non-residential premises.
3. Presence of automatic arson. In principle, the function is not required. Moreover, piezoelectric elements fail quite quickly, but at the same time their presence is almost limited 10 – 20% increases the cost of the gun.
4. Availability of additional functions. This means adjusting the fan speed, sensor system, thermostats, and so on. All of them help automate the operation of the gun, but manufacturers do not recommend leaving heaters of this type running without supervision. And the presence of those same sensors also increases the final cost of the device. If you need to save money, you can buy a gun without all these sensors.
5. Nutrition for a fan. Occurs either from 220V, or from 12V DC. The last option is convenient because the gun can be used as a mobile gun, launching it even in the absence of a household electrical outlet. If such functionality is not needed, then it is better to take it with the simplest 220V motor. Even better - without brushes (such motors are very reliable and durable, but are quite expensive).

Table 1. Key parameters of gas guns that must be taken into account when purchasing.

An option for using gas guns is for installing suspended ceilings. Under the influence high temperature PVC fabric stretches easily, there are no folds or dents left on it

Review of popular models

Analyzing information on thematic forums, the following popular ones can be identified: gas burners among Russian consumers:

1. MASTER BLP 17M. Ideal option for heating a garage. Reliable and durable equipment, the reducer is “unpretentious” to the quality of the supplied gas. There is a power regulator from 10 to 16 kW, so it is suitable for garages up to 150 m 2. The only negative is manual ignition, although because of this the device almost never breaks; the manufacturer generally gives a 3-year warranty. The average cost is 9 thousand rubles.
2. SPECIAL IGE-15. Gun Russian production. Has small sizes, suitable for use when installing suspended ceilings or for drying walls after painting. Power is 15 kW, but the flow is narrowly targeted. It has 2 heating stages, the kit includes a hose for connecting to the cylinder (with adapters). The average price is 5.2 thousand rubles.
3. Caliber TPG-10. Also made in Russia, power up to 10 kW, suitable for small rooms. The gearbox is collapsible, the manufacturer has provided for its complete replacement with an analogue one. The fan is also serviceable and not pressed into a bearing. But the functionality is minimal. But the cost is only 4 thousand rubles.
4. Kroll P 10. Popular model of foreign production. It works when connected to cylinders, there is a piezo ignition, a safety thermostat and a pressure sensor. The productivity is small - up to 300 m 3 per hour, but the flow of heated air is not narrowly targeted, as in other models. The average price is 9.5 thousand rubles.
5. Profteplo KG-57. Industrial type heat gun with a capacity of up to 1400 m 3 per hour. Available in two versions - with connection to 220V and 380V. The latter is noisy in operation, but it is not suitable for small spaces. There is flame control, as well as a sensor that turns off the gun when it detects movement in front of it (it can be forcibly turned off). The average price is 11 thousand rubles.

In summary, a gas gun is an excellent option for quickly warming up non-residential premises. For residential - not best option, as it requires connection to the chimney. But you can make a cannon yourself; all this will require only 2–3 thousand rubles (for all materials).