Diesel heat gun: device, pros and cons, capabilities

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From this article you can find out what features a diesel heat gun used for quickly heating rooms has: the structure and types of structures, the scope of their application and the specificity of the operating process, average prices for popular models. The text contains an overview of the advantages and disadvantages inherent in these devices, descriptions of common types of breakdowns and ways to eliminate them.

A diesel fuel heat gun is designed to quickly heat indoor and outdoor spaces.

Diesel heat gun: characteristics of heating devices

With the arrival of the cold season, the problem of space heating arises. Moreover, this applies not only to living rooms, but also to industrial, warehouse and retail spaces. If the building does not have a centralized heating system, the lack of heat is compensated with the help of alternative heating devices. As such a replacement, you can buy an indirectly heated diesel heat gun with suitable characteristics.

Mobile heat guns are equipped with wheels and a handle for convenient movement of the device

Design and principle of operation of a diesel heat gun

A heat gun is a universal device for heating rooms. The principle of operation of such structures is quite simple: diesel burns inside the heater, resulting in the formation of heat, which is supplied to the room by a powerful fan.

Diesel is used as fuel. Some models are capable of running on used and filtered oil or kerosene. Thanks to the progressive internal structure, these designs have high power and efficiency, which reaches almost 100%. All diesel heat guns are dependent on electricity. Some low-power modifications can operate on 12 V or 24 V, but most models require 220 V for normal operation.

Electricity is used to start the burner. In addition, it is necessary for transporting heat due to the rotational movements of the fan. The burner not only atomizes fuel, but also promotes air supply. This process results in a mixture that is highly flammable. Thanks to this, the flame is stable.

The principle of operation of an indirect heating heat gun is that the air forced by the fan passes through the combustion chamber and enters the room already heated, and waste diesel fuel products are removed from the room through the chimney

The affordable price of diesel guns and the ability to effectively heat rooms without a central heating system have made these designs so popular. This type of equipment is capable of generating a large amount of heat, due to which the scope of its application has expanded.

Important! Guns powered by diesel fuel cannot be used to heat residential premises.

Scope of application of diesel structures:

• heating of warehouse-type premises;
• backup heating in poorly insulated facilities in cases where frosts uncharacteristic for the area occur;
• heating construction sites where heating has not yet been installed;
• organization of heating in hangars used for storing equipment;
• installation of suspended ceilings;
• heating of greenhouse structures used for growing crops.

In addition, you can buy an indirect heating diesel gun to organize heating in the garage.

Diagram of the design of a diesel heat gun of indirect heating

Why is it profitable to buy a diesel gun: design advantages

Guns that heat rooms by burning diesel fuel have many undeniable advantages. They are compact in size and light weight, while having excellent technical characteristics. These designs are easy to use. The mechanism is started with just one press of a button. The user has the ability to control the temperature in the room.

Many diesel designs have a built-in system for connecting a rheostat. The operating principle of this mechanism is very simple. Before launching the gun, you just need to set the required parameter. When the room temperature reaches this value, the equipment will automatically turn off. If the temperature drops below the specified level, the structure will start on its own.

Diesel guns are economical; fuel consumption depends on the technical parameters of the device. Equipment with a power of 20 kW and a productivity of 550 m³/h will require about 1.5 liters of diesel fuel to heat this volume. Using such a gun, you can achieve quick results. According to the information stated by the manufacturers, diesel devices instantly warm up the room. The gun can raise the air temperature of +10°C in a room with a volume of 120 m³ to a level of +180°C in 15 minutes. Moreover, this speed is not the limit.

Small diesel fuel heat guns are convenient for use in closed, unheated rooms

Diesel devices are safe to use. If the room is well ventilated, inhaling burnt-out air does not cause such unpleasant consequences as headaches and dizziness. High-quality designs are able to work for a long time without additional refueling. The guns are equipped with large-volume tanks, thanks to which they are able to operate continuously throughout the day.

Note! The body of the structure is heated to a temperature of +30-35°C maximum. Therefore, accidental touching the gun will not cause burns.

Disadvantages of using diesel heat guns for garages

The customer reviews left about diesel heat guns for garages not only reflect the advantages of these designs. Sometimes they also contain shortcomings that were identified by users during operation of the device.

Diesel fuel heat guns are often used to heat garages and workshops

High noise levels are often mentioned as a serious hearing irritant. Although the presence of sounds is considered normal for heating equipment. Guns are not classified as silent devices. Some manufacturers offer models with reduced operating noise levels. For example, the Master BLP 15M diesel heat gun produces no more than 20 dB. This figure is considered very low.

Many users find the dependence of devices on the electrical network inconvenient. The gun really needs power for the fan and pump, and there is no way around these requirements. However, most often such structures are used in facilities where there is electrical wiring.

Among the disadvantages, the high price of diesel heat guns is also mentioned. However, it should be noted that the cost of such devices is fully justified by their reliability and comfortable operating system. Many are concerned about the cost of diesel fuel, the purchase of which is more expensive than the purchase of liquefied gas in cylinders. Although the fuel consumption of these devices is low.

Diesel fuel heat guns require an electrical connection for the built-in fan to operate.

How to choose a heat gun based on technical parameters

One of the most important technical parameters of any heat gun is its performance level. In the specifications, manufacturers indicate the number of kilowatts that the gun is capable of producing in intensive operation. You can also calculate the performance level yourself.

On average, a power of 1 kW is enough to heat an area of ​​10 m², provided that the ceiling height does not exceed 3 m. This figure is conditional, since it depends on the operating conditions of the room that needs heating.

Factors that affect heating efficiency:

• wall thickness;
• availability and quality of insulation;
• condition of the ventilation system;
• heat leakage (frequency of opening gates or doors);
• number of windows and doorways, their size;
• outside air temperature;
• condition of the floors;
• wind force, etc.

Diesel fuel heat guns are available in different capacities, which allows you to choose a device for both a small room and for production facilities and hangars.

The price of a diesel indirect heating heat gun is not an indicator of quality. When choosing a device, it is advisable to pay attention to powerful modifications. The higher this indicator, the better. If there is a lot of heat, you can always reduce the intensity of work. And if there is a lack of heating, you will have to buy another device, which will significantly affect the budget. The efficiency of a diesel heater is also influenced by its installation location.

Helpful advice! In large rooms it is advisable to use several heaters. Arranging appliances diagonally will be more effective than placing them along the wall.

Cold air is always heavier than warm air, so it always accumulates in the lower part of the room. Based on this, it becomes clear that installing the gun on a hill or turning its working edge upward does not increase the heating efficiency. The most optimal position of the equipment is horizontal.

The Ballu BHDN-20 indirect heating heat gun model is capable of heating a room up to 200 m²

The performance of heating and ventilation equipment is another parameter that you should pay attention to. For the Ballu BHDN-20 indirect heating diesel gun, this figure is 500 m³/h. This means that the device is able to effectively heat the specified volume of air within 1 hour.

Not least important are the dimensions and weight of the structures. The mass of heat guns can vary between 3-30 kg. Most of them have a mobile design, so they are easy to use. The smaller the device, the easier it is to move.

Diesel heat gun: power selection

The choice of power depends on how you intend to use the unit. If the goal is to maintain the temperature, consider the standard. Usually - 1 kW per 10 square meters of area. If the goal is to quickly raise the temperature “from minus” to a comfortable level, you need to use two to four times more power. The more power you have, the faster you will achieve the desired temperature. Just keep in mind that fuel consumption will be higher, and so will the price of the unit.

Table for selecting the power of a heat gun depending on the area and the required temperature difference

If we take “average” in your case, there is a simple formula that can be used to calculate the required performance more accurately.

Formula for calculating the power of a heat gun

Questions may only arise when determining the thermal conductivity coefficient. In general, this value is calculated based on the material of the walls, ceiling and floor. But the calculation is long and complex. But you can take approximately:

• from 0.6 to 1 with well-insulated walls (according to recommendations for your region);
• from 1.1 to 2 with normal insulation (a brick wall with two bricks without additional insulation is considered 2);
• from 2 to 3 with insufficient insulation (brick in one row is 2.5);
• dilapidated, metal buildings - from 3 and above.

When choosing a coefficient, you must also take into account the degree of insulation of the floor, ceiling, doors and windows. If a lot of heat escapes through them, increase the coefficient. If they are well protected from heat leakage, reduce.

Features of direct heating diesel heat guns

Direct heating guns are the simplest devices that can serve as heat sources. Such designs have an open combustion chamber. A pump equipped with a nozzle is installed inside, which ensures a torch effect. A fan is located behind these elements. All the heat that is generated during fuel processing is supplied to the room along with the products of its combustion.

Operating principle of a direct heating diesel gun

Operating principle of a direct heating diesel gun:

1. Diesel fuel from the tank is fed into the heating filter.
2. The compressor transports fuel to the injector.
3. Diesel fuel is ignited by a glow plug.
4. A fan installed behind the burner draws cool air from the room into the combustion chamber, where it is heated.
5. The protective mesh located in the front part of the device traps the flame, preventing it from penetrating beyond the combustion chamber body.
6. After heating, the air is supplied back into the room.

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The operating principle of a direct heating gun is quite simple. It is efficient and clear. However, such guns have one significant drawback. All combustion products enter the room, so it is not recommended to use the devices in living rooms. Direct heating guns are suitable for open areas and spaces with a good ventilation system.

Average prices of diesel guns for space heating (direct heating designs):

Note! Using fuel with impurities will lead to contamination of the injectors and other unpleasant consequences. Therefore, it is very important to use high-quality raw materials to avoid expensive repairs and the purchase of spare parts for a diesel gun.

Heat guns can be used to heat greenhouses year-round

Consumer opinion about diesel heat guns: reviews of direct heating designs

Users of heating equipment often share their own opinions on forums. Some reviews can be found below:

“I have long heard about the advantages of Master diesel heat guns, so when the need arose to purchase a heater, I did not think twice and relied on this manufacturer. The gun works great and is completely worth the money spent on its purchase. With its help, I not only heat the garage, but also take this device with me to the dacha for the workshop.

Of course, it’s a pity that you can’t work in a room where the gun is on, but I don’t really need that. It takes no more than 20 minutes to warm up the room. Otherwise, I am completely satisfied with my purchase."

Sergey Kostyuk, Ekaterinburg

“I bought myself a BALLU BHDP-20 diesel heat gun. A wonderful unit. For a month of operation, there were no failures in the automation, as was the case with my previous gun. I like that the design allows you to adjust the pressure on the compressor that supplies the diesel. There is only one drawback - with a full tank the device is slightly heavy.”

Igor Samoilov, Moscow

Most heat gun models have high safety standards, which prevents injury from accidentally touching the device

“To heat the garage, a neighbor advised us to buy a heat gun. I spent a long time looking through manufacturers and models. In the end, I settled on the Master B 35 CED diesel gun. Excellent device, very simple. It is economical and completely easy to maintain. I've been using it for more than a year now. One refill is enough to keep the gun working all day. A 5x8 m garage warms up in 15 minutes.”

Georgy Miroshnichenko, St. Petersburg

Features of diesel indirect heating heat guns for the garage, prices and reviews

This type of gun functions in much the same way as direct fired designs. The only difference is that the combustion products that are formed during the process of fuel exhaustion are removed outside the room. A chimney is used for this. Thanks to this, indirect heating guns can be used in almost any room with a sufficient level of ventilation.

Powerful heat guns have impressive dimensions and are used to heat large areas

A nozzle is installed in the design of the closed combustion chamber. In addition, the gun has a system designed to remove combustion products. The air pumped by the fan does not come into contact with the torch. Its heating is provided by blowing into the combustion chamber.

Average prices of indirectly heated diesel heat guns:

Helpful advice! The thermal power of a device for heating a room can be determined using this formula: Q (in kcal/h) = K × V × ΔT, where Q is the required level of thermal power, K is a coefficient reflecting the degree of heat dissipation, V is the total volume of the room, and ΔT is the difference between the outside temperature and the one required to create a comfortable indoor microclimate.

Heat guns are often used to heat tents during the cold season

Consumer opinion about diesel heat guns: reviews of indirect heating designs

Reviews from forums about indirect heating guns:

“I use the KROLL MAK15 gun and am completely satisfied with this unit. No more than 1.5 liters of diesel fuel is consumed per hour in maximum operating mode. It was the efficiency that attracted me to this model. The tank is designed for 30 liters. In the winter, I only use winter diesel, otherwise the fuel just settles. There are no problems with starting."

Evgeny Doroshenko, St. Petersburg

“After an accident on the heating main, which provided heating in the garage, we had to buy a Master BV77E diesel heat gun. The unit is, of course, large. The length of the body exceeds 1 m, and the weight of the structure with an empty tank is neither more nor less than 55 kg. Fortunately, the manufacturer provided the possibility of convenient transportation, which I could not help but appreciate. The device comes with a trolley on wheels. The construction is quite durable. After 3 months, no breakdowns, backlashes or extraneous sounds. The only thing I don't like is the need to constantly check the fuel. Yes, and filters need to be changed from time to time. Otherwise the device is great.”

Konstantin Nalivaiko, St. Petersburg

Indirect heating guns require an air duct through which warm heated air enters the room

Unit characteristics

The electric gun includes a heating element, which helps warm the air, and a fan, which pumps air into the room. Devices with low power do not allow heating the room to a sufficient temperature, and powerful ones require the installation of three-wire wiring.

The most economical type of heating is the diesel option, but it is quite expensive.

Diesel structures are divided into guns that perform direct and indirect heating. The first method assumes that combustion products remain indoors. The second method facilitates the removal of combustion products to the outside, since the gun is equipped with a special exhaust pipe.

Characteristics of the gas device:

• It is considered an economical option for heating the entire room.
• The unit is inexpensive.
• The cheapest type of fuel is used for work – gas.

The disadvantage is the direct release of combustion products into the room. That is why it needs to be ventilated all the time, which leads to the cooling of the garage. Which device to choose, everyone decides for himself, based on the heating requirements and the characteristics of a particular room.

Features of repair of diesel guns for space heating

Repair maintenance for a diesel fuel-powered installation can cost a significant amount. Just one diagnostic procedure costs about 1000 rubles. For this reason, many owners of garages and warehouses resort to self-repair of structures.

How to repair a diesel heat gun yourself

If warm air does not move, the fan motor may be faulty. Repair involves cleaning the terminals, checking the winding on the motor (an analog tester is suitable for this), as well as insulation. Sometimes the damage is so serious that superficial adjustments are not enough. In such cases, there is only one thing left - replacing the engine.

An important design detail is the nozzles. The quality of operation of these elements depends on the full functioning of the entire heating system. These parts rarely break, and new elements to replace failed ones can be bought at any store.

Modern diesel, gas and electric heat guns are equipped with a convenient control panel that allows you to adjust the air heating temperature

Much more often, the need to repair a diesel gun arises due to a clogged filter. To eliminate this breakdown, simply open the housing of the structure, unscrew the plug and remove the contaminated element. After washing with clean kerosene, the filter is ready for further use. Before installing this part in place, it is advisable to blow it out with a jet of compressed air.