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Hot Air Generators | Hot Air Cannons | Heaters

Choose from 62 models of Hot Air Generators in Stock, with Free Shipping and with Free 30-day Return*

  • ► The electric hot air generators with fan are appreciated for their absence of fumes and emissions, making them also suitable for use in enclosed spaces. Available with single and three-phase power supply;
  • ► The gas-fired hot air generators powered by LPG can be equipped with piezoelectric or electric start. They are the quickest and most cost-effective solution for heating rooms that are difficult to;
  • ► The oil-fired hot air generators are ideal for heating large rooms. Combustion can be direct or indirect, suitable for pre-heating rooms with human occupancy.

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The best hot air generators on offer

Discover offers on the best hot air generators from AgriEuro

Hot air generators are devices used to heat rooms of different sizes, both open and closed. Their main function is to produce and distribute hot air efficiently, making working spaces, warehouses, construction sites and other places more comfortable that need fast and uniform heating. These generators are distinguished by different technical characteristics and operating modes, making them suitable for various applications, both domestic and professional.

There are different types of hot air heaters, each with its own specific characteristics:

  • Electric hot air generators with fan: These devices work by an electrical resistor that heats the air that is blown into the environment by a blower. They are ideal for small indoor environments.
  • Gas Hot Air Generators: Powered by gas, these generators are particularly effective for heating large open or well-ventilated spaces.
  • Diesel-powered hot-air guns: These generators use diesel as a fuel and are powerful, suitable for large environments such as construction sites or warehouses due to their fast heating capacity.

What are hot air generators used for?

Hot air generators for households and other environments are indispensable tools for heating spaces of various sizes quickly and efficiently. These devices can be applied in a wide range of sectors from industry to construction to domestic use. Their use extends to all situations where it is necessary to quickly raise the temperature of an environment, whether it is in open spaces such as construction sites, or enclosed spaces such as workshops, warehouses and greenhouses.

These generators are particularly useful in situations where conventional heating is not sufficient or not available. Among the activities facilitated by hot-air guns are:

  • Large-volume heating: Ideal for industrial or commercial environments where large surfaces need to be heated quickly.
  • Drying of materials: Used on construction sites to accelerate drying of paints, concrete and other building materials.
  • Frost protection: In agriculture, they are used to protecting plants and crops from frost by maintaining an optimal temperature in tunnels or greenhouses.

Hot air generators can be suitable for different levels of use. Electric fan models, for example, are often used in domestic or small environments, while diesel and gas models are best suited for professional and industrial applications where more power and range is required.

What do hot air guns look like?

Hot air heaters consist of several components, each of which has a specific role, contributing to the generator's ability to produce and distribute heat effectively and safely. The choice of materials and technologies used varies depending on the type of generator and its specific applications.

  • Supply of the Burner or Heat Exchanger: In electric generators, the heat exchanger is nothing more than a heating resistor powered by current. Gas or diesel models use these fuels to power the burner to heat the air.
  • Ventilation: They draw in the cold air and heat it through the burner or heat exchanger and promote the diffusion of the heated air into the environment.
  • Chassis: The strength and durability of the generator depends on the chassis material. The steel-bodied generators are designed to withstand harsh conditions, offering good internal protection. Stainless steel body styles offer increased resistance to corrosion and wear, making them ideal for harsh environments or extended use.
  • Portability: The generator's configuration has a major impact on its mobility. Trolley models are mounted on a trolley, making it easy to move over rough terrain, are suitable for contexts where frequent movement is necessary. Portable models are designed to be compact and lightweight, making it easy to transport to smaller environments or for mobile operations.
  • Air supply: The way in which heat is distributed to the environment is a determining factor for the efficiency of the generator. The ventilated output uses a fan to diffuse the hot air, ensuring even temperature distribution. Infrared delivery emits heat through infrared rays, directly heating objects and people in the environment.

The choice of materials and technologies used varies depending on the type of generator and its specific applications, directly affecting the lifetime and efficiency of the device.

How do hot air heaters work?

Hot air generators are complex devices that use multiple power sources to produce and diffuse heat in various sizes of environments. Power sources may include electricity, gas or diesel fuel, each with its own specific characteristics that will be explored later. Regardless of the type of supply, The basic operating principle of hot-air guns remains similar:+ Heating the air and distributing it efficiently to the surrounding environment.

  • In electric models: An electrical resistance is heated when a current passes through it, transforming electrical energy into heat. This heat is then transferred to the surrounding air, which is pushed through the generator and diffused to the environment via a blower.
  • In combustion models: Like gas or diesel, the generator burns the fuel in a combustion chamber, producing heat. The heat generated by the combustion is transferred to the air which, through a ventilation system, is distributed to the environment. These models are particularly effective in large spaces where fast and powerful heating is required.

Heat delivery systems may vary between different generator models.

  • Ventilated delivery: In this method, the heated air is pushed through a blower, allowing the heat to be distributed evenly and quickly in the environment. This system is effective in wide and open spaces where it is necessary to maintain a constant temperature over a large area.
  • Infrared Delivery: In this mode, heat is emitted in the form of infrared radiation, directly heating objects and people without heating the surrounding air. This type of dispensing is particularly useful in well-defined environments or for localized heating.

>a crucial element in the operation of hot air generators is the possibility of temperature control. Many models are equipped with a thermostat that allows you to adjust the desired temperature precisely. The thermostat controls the switching of the generator on and off, maintaining a constant temperature and optimizing energy or fuel consumption. On some models, the thermostat is an optional accessory, while on others it is integrated into the system, offering greater control and comfort.

Advantages of hot air generators over other heating systems

Heaters offer a number of significant advantages over other heating systems, making them indispensable in a variety of contexts, from home to professional use. Here's a closer look at the key benefits:

  • Application versatility: Hot air guns can be used in a wide range of environments, both indoor and outdoor. Unlike traditional heating systems that are often confined to enclosed spaces and require permanent installations, hot air generators are portable and can be used on construction sites, warehouses, greenhouses, workshops and anywhere requiring temporary or targeted heating.
  • Capacity to heat large volumes: One of the main strengths of hot air generators is their ability to heat large volumes of air in a short time. The diesel or gas models in particular are designed to generate a high heat output that allows you to quickly heat large environments such as warehouses, hangars or open spaces.
  • Temperature Control Systems: Many hot air guns are equipped with integrated thermostats that allow precise temperature control. The thermostat allows the generator to automatically turn on and off to maintain the set temperature, reducing energy or fuel consumption. On more advanced models, the thermostat can be programmed to operate at specific intervals, giving even greater control.
  • Energy efficiency: Hot air generators are designed to maximize energy efficiency. The ability to warm up the environment quickly reduces the time required to operate the device, minimizing energy or fuel consumption. In addition, modern heaters are often built with advanced technologies that optimize combustion and reduce emissions, contributing to a lower environmental impact.

Types of hot air generators

Hot air generators come in different types, each designed to meet specific heating needs. This variety makes it possible to choose the most suitable model according to the characteristics of the environment and the type of use envisaged. The following is a list of the main types of heaters:

  • Electric hot air generators with fan: These devices use an electrical resistor to heat the air, which is then diffused to the environment via a blower. They are ideal for small indoor areas where even heat distribution is required.
  • Gas Hot Air Generators: Powered by gas, these generators are particularly effective for heating large open or well-ventilated spaces due to their ability to produce intense and immediate heat.
  • Diesel-powered hot-air guns: These generators use diesel fuel as a fuel and are suitable for heating large environments such as construction sites or warehouses due to their power and autonomy.

Electric hot air generators with fan

Electric hot air generators with fans are particularly versatile devices, ideal for heating small indoor spaces such as rooms, offices or small laboratories. These generators use an electrical resistor to convert electrical energy into heat, which is then distributed to the environment via an integrated fan. This ensures uniform heat distribution, improving comfort and energy efficiency.

Here is a list of the main features of this type:

  • Ease of use:: Simply plug them into a standard electrical outlet, and you can activate them, without the need for complex installations or fuel management.
  • Even heat distribution: The integrated fan ensures that heat is quickly and evenly distributed throughout the environment, avoiding hot spots.
  • Temperature regulation: Many models are equipped with a thermostat that allows you to set the desired temperature, automatically switching off the appliance once the set temperature has been reached.
  • Safety: They do not produce fumes or require the use of fuels, reducing the risk of accidents and making them safe for use in domestic or sensitive environments.
  • Portability: They are often lightweight and compact, making them easy to move and position in different environments as needed.

These generators are particularly suitable for those looking for a simple, safe and immediate heating solution for small spaces.

Gas fired hot air generators

Gas hot air generators are powerful devices designed to heat large spaces, especially in ventilated or outdoor environments. They use gas as a fuel, which is burned to generate heat that is then diffused to the environment. These generators are particularly appreciated for their ability to produce intense heat and for their operational autonomy.

Here are the main features of the gas hot air generators:

  • High thermal output:: By burning gas, these generators can heat large volumes of air in a short time, making them ideal for large, well-ventilated spaces.
  • Use in open environments: They are particularly suitable for open or semi-open environments such as construction sites, warehouses or industrial spaces where rapid heat diffusion is required.
  • Operating autonomy: The gas-operated operation ensures a long runtime, reducing the need for frequent charging and making them ideal for extended use.
  • Easy to switch on: Often equipped with piezoelectric starting systems, these generators are easy to switch on without the need for complex electrical connections.
  • Energy efficiency: The efficient combustion of gas ensures a good ratio between energy consumed and heat produced, optimizing operating costs.

These generators are an excellent choice for those who need a powerful and reliable device for heating large areas, especially in professional or industrial settings.

Diesel hot-air guns

Diesel hot-air guns are among the most powerful generators available, designed to quickly heat large environments such as construction sites, sheds, warehouses and greenhouses. They use diesel fuel as a fuel, which is burned in an internal burner to generate intense heat that is then spread to the environment via a powerful fan.

Below is a list of the main characteristics of this type:

  • High heating capacity: They can generate large amounts of heat, ideal for heating very large or poorly insulated spaces.
  • Autonomy and power: Thanks to the integrated diesel fuel tank, these guns can operate for long periods without interruption, ensuring continuous and constant heating.
  • Robustness and Durability: Built to withstand harsh conditions, such as construction sites or industrial environments, with durable materials such as steel or stainless steel.
  • Mobility: Often mounted on trolleys, these generators are easy to move despite their size, allowing flexible use in different areas of the job site or warehouse.
  • Heating efficiency: The direct combustion of diesel fuel provides high thermal efficiency, allowing even the largest volumes of air to be heated quickly.

Diesel hot air gunsare the ideal solution for those who need powerful and durable heating in large environments and for intensive professional use.

Technical characteristics of generators and hot air guns

Heaters are designed with a number of specific technical characteristics that determine their efficiency, use and compatibility with different environments and applications. Below is a list of the key technical features of these devices, with an in-depth description of each.

Power supply

The supply of hot air generators is one of the most important characteristics, as it determines the type of energy used for the operation of the device and influences its efficiency and application.

  • Single-phase Powered by the classic 230V single phase home current This type of power supply is typical of smaller electrical models and is suitable for domestic or small environments. It is easy to use as it simply requires a standard electrical outlet.
  • Three-phase Powered by 400V three-phase current, mainly used in the most powerful models for professional or industrial use. This type of power supply allows you to handle the high-powered devices needed to heat large rooms.
  • Gas: Gas supply typical of generators designed for large open or ventilated spaces. The use of gas as a fuel allows a large thermal output and a considerable operating autonomy, making these models ideal for professional applications.
  • Diesel: Diesel fuel used in the most powerful hot air guns. These devices are ideal for industrial environments or construction sites where fast and intense heating is required. Diesel fuel also ensures long range and high efficiency.

Chassis material

The material of the hot air gun body directly affects the durability and ability of the device to with stand harsh conditions.

  • Steel body: The steel body is strong and durable, ideal for use in industrial environments or construction sites where a robust device is required. The steel offers good protection against impact and wear, ensuring a long life of the generator.
  • Stainless steel body: Stainless steel offers a higher resistance to corrosion and wear than normal steel. This material is ideal for harsh environments or applications that require additional protection against atmospheric or chemical agents.

Portability:

Portability is a key feature for generators that need to be moved frequently or used in different areas.

  • Trolley: The trolley-mounted generators are mounted on a trolley that facilitates transport and movement over rough terrain. This configuration is ideal for use on construction sites or warehouses where the generator needs to be moved between different areas.
  • Portable: Portable generators are designed to be compact and lightweight, facilitating manual transport and use in confined spaces or in different locations. They are particularly suitable for small environments or situations that require mobility.

Start-up

Starting the generator determines how easily the device can be switched on and operated.

  • Piezo starter: Piezo starting uses a spark generated by a piezo mechanism to ignite the fuel (gas or diesel). This system is simple and requires no external power, making it reliable under harsh conditions.
  • Electric start Electric starting, which is done by means of a key or push button, is more convenient and faster than manual starting. This type of start-up is typical of more advanced models and simplifies the starting of the generator, making the use more immediate.

Air supply

The way in which heat is distributed to the environment is determined by the air delivery system.

  • Ventilated delivery: The heat is distributed through a fan that pushes the warm air into the environment. This system is effective for heating large spaces quickly and ensures even heat distribution.
  • Infrared Delivery: In this system, heat is transmitted by infrared rays that directly heat objects and people in the environment, rather than the air. This type of dispensing is particularly efficient in enclosed spaces or where direct and targeted heating is required.

Type of environment

Hot air generators are designed to be used in specific types of environments according to their construction and technical characteristics.

  • Open environments: These generators are designed to operate in ventilated or outdoor environments where heat dissipation is high. They are particularly suitable for construction sites, greenhouses or open warehouses.
  • Indoors: Some models are suitable for indoor use, where more precise control of air temperature and quality is required. These devices often include advanced security systems to ensure safe operation in confined spaces.

Heated volumes

The ability of a hot air generator to heat a certain volume of air depends on its heat output and the type of environment in which it is used.

  • Environment volume: Generators are sized to heat room volumes ranging from 30 to 750 cubic meters depending on their power. This feature makes it possible to choose the most suitable model according to the size of the space to be heated and the level of insulation of the environment.

Type

Hot air guns can be classified according to the mode of heat distribution and their technical configuration.

  • Direct: These generators distribute the heat directly from the burner source to the environment, providing immediate and powerful heating.
  • Indirect: Equipped with a heat exchanger, these generators separate the combustion gases from the hot air distributed in the environment, making them suitable for indoor use.
  • Ventilated: They are devices that use a fan to push the hot air into the environment, ensuring an even and rapid distribution of heat.

Thermostat temperature

The presence or absence of a thermostat affects the generator's ability to maintain a constant temperature in the room.

  • No Thermostat: Some generators do not allow the application of a thermostat, requiring manual temperature control.
  • Optional thermostat: Some models can be equipped with an external thermostat as an accessory, offering automatic temperature regulation.
  • Integrated thermostat: Models with integrated thermostat allow the desired temperature to be set and maintained automatically, improving comfort and energy efficiency.

Heaters Purchasing Guide

When choosing a hot air generator it is important to consider a number of factors to ensure you buy the model that best suits your needs. Below is a guide that provides some useful tips for selecting the ideal hot air generator, followed by a list of the main types of customers and their specific needs.

  • Power supply type: The choice between electric, gas or diesel power depends on the environment in which the generator will be used. Electric models are ideal for well-insulated enclosed spaces, while gas and diesel generators are more suitable for large open or ventilated spaces.
  • Size and portability: If the generator needs to be moved frequently, it is advisable to opt for a portable or trolley model. These devices offer greater flexibility and ease of use in different environments.
  • Thermal power: The power of the generator shall be appropriate to the volume of the room to be heated. It is important to calculate the cubic meters of the area correctly and to select a model that can heat it efficiently.
  • Control system The integration of a thermostat allows a constant temperature to be maintained, reducing consumption and improving comfort. Models with integrated thermostat are ideal for those looking for precise and automated temperature control.
  • Materials and durability: If the generator will be used in harsh environments or exposed to adverse weather conditions, it is advisable to choose models with a stainless steel body that provides greater resistance to corrosion and wear.

Customer types

Different types of customers have specific needs when it comes to choosing a hot air generator. Here is an overview of the main types of customers and their specific needs:

  • Construction professionals: They can use hot air generators to heat construction sites and dry materials such as paint and concrete. Choose models with high thermal output, diesel fuel for long run time and portability for easy on-site movement.
  • Farmers: They use generators to protect crops from frost and heat greenhouses and tunnels. Gas generators are recommended for fast and powerful heating, with a stainless steel body to withstand atmospheric conditions and a ventilated delivery system for even heat distribution.
  • Small Entrepreneurs or Craftsmen: They heat workshops, laboratories or small warehouses with hot air cannons. They are ideal for electric models with fan, suitable for indoor use, with an integrated thermostat for precise temperature control and compact size for ease of use and positioning.
  • Domestic users: They can use generators to heat garages, cellars or domestic work areas. It is recommended to opt for small power electric models, with portability for versatile use in different rooms and high safety without smoke emissions or fuel requirements.
  • Managers of large commercial or industrial spaces: They use generators to heat warehouses, hangars or exhibition spaces. High-powered gas or diesel generators are recommended, with a ventilated delivery system to cover large areas and advanced temperature control options to optimize operating costs.

The best brands of hot air generators available on AgriEuro

When choosing a hot air generator it is important to consider not only the technical characteristics of the product, but also the brand that produces it. The most trusted brands offer guarantees of quality, durability and after-sales support. Below is a list of the best heater brands available on AgriEuro:

  • Master Hot Air Generators: Master is a leading brand of hot air generators, known for their robustness and reliability, ideal for professional use in harsh environments.
  • BullMach Hot Air Heaters: BullMach offers a range of generators designed to withstand harsh conditions, with a focus on energy efficiency and technological innovation.
  • Geotech hot air generators and cannons: Geotech offers heating solutions that combine high quality with a competitive price, perfect for those looking for a versatile and reliable hot air generator.
  • Blackstone diesel hot air cannons: Blackstone stands out for its robust and powerful hot air generators, designed for high performance in industrial and commercial environments.

Why buy hot air generators on AgriEuro?

Buying a hot air generator on AgriEuro offers many benefits that go beyond the simple quality of the product. AgriEuro is an e-commerce leader in the sector, known for the reliability and breadth of its offer, as well as for its dedicated and attentive customer service. Here is a list of the main reasons why you should choose AgriEuro:

  • Fast and Free Shipping: All orders are handled by AgriEuro's logistics centres, ensuring fast and free shipping, regardless of the volume of the purchase.
  • Spare parts always available: AgriEuro offers the possibility to order spare parts for all products purchased, thus ensuring the longevity and the maintenance of the hot air generator in perfect condition over time.
  • Attentive and personalised after-sales service: The AgriEuro support team is always available to answer any questions or solve any problems, offering after-sales service that is distinguished by professionalism and customer care.

These advantages make AgriEuro the ideal choice for those looking not only for high quality products, but also for a complete and reliable service. Discover the wide range of hot air generators available on AgriEuro and choose the one that best suits your needs at the best price on the web.

FAQ on hot air generators

1. What is a hot air generator used for?

A hot air generator is a device designed to produce and distribute hot air, primarily to heat large spaces that cannot be effectively heated with conventional systems. Its main function is to provide heat in industrial, agricultural, commercial and in some cases residential environments.

  • Heating of Industrial and Commercial spaces: It is used to heat large rooms such as sheds, warehouses, factories and showrooms, where heat must be distributed quickly and over large surfaces.
  • Agricultural sector: Used to maintain optimum temperatures in greenhouses, barns, livestock farms and agricultural product storage areas. It is essential to ensure animal welfare and crop growth in controlled environments.
  • Temporary Events and Outdoor spaces: Used in outdoor events, trade shows, tents and temporary facilities to ensure a comfortable environment even in adverse weather conditions.
  • Construction sites: Essential for heating rooms during construction or renovation work, preventing moisture and ensuring better working conditions.

2. How does a hot air generator work?

The operation of a hot air generator varies depending on the type of power supply, but in general it is based on a common principle: The air is heated via an internal heat source and then distributed to the environment via a ventilation system.

  • Air intake: Air is drawn from the outside environment or from the inside via a blower.
  • Heating: The intake air passes through a heat exchanger, which is heated by a flame (in the case of combustion generators) or by electrical ballasts (in the case of electric generators). The flame is generated by the combustion of a fuel such as diesel fuel, LPG or methane.
  • Hot air distribution: The heated air is then pushed through a ducting system or directly into the environment via a powerful blower, ensuring even heat distribution.
  • Temperature control: An integrated thermostat regulates the temperature by switching the generator off or on to maintain the desired heat level.

3. What is a hot air generator?

A hot air generator is a device that produces hot air for heating enclosed or semi-open spaces. It can be powered by a variety of energy sources, including fossil fuels (diesel, LPG, methane) or electricity, and is used in environments where large rooms need to be heated quickly.

  • Direct combustion generators: They heat the air directly by burning a fuel. They are very efficient but can only be used in well-ventilated rooms as they release exhaust gases into the environment.
  • Indirect combustion generators: The air is heated in a heat exchanger separate from the burner, so the distributed hot air is clean and smoke-free. These models are ideal for indoor use.
  • Electric generators: They use electrical resistors to heat the air. They are safer and suitable for indoor environments as they do not produce fumes, but their use is limited by the availability of electricity and the operating cost.

4. How much does a hot air generator consume?

The consumption of a hot air generator depends on several factors, including the type of generator, the rated power, the duration of use and the environmental conditions.

  • Generator efficiency: More efficient models consume less fuel or energy to produce the same amount of heat.
  • Isolation of the environment: Well-insulated environments require less power to maintain the desired temperature.
  • Intermittent use: Consumption can be reduced by using the generator only when absolutely necessary, with the aid of programmable thermostats.

Consumption may be expressed in litres of fuel per hour (in combustion models) or in kilowatt-hours (kWh) in electric models.

  • Consumption of hot air cannons with diesel or LPG: Consumption typically varies between 0.5 and 3 litres of fuel per hour, depending on the generator output (which can vary from 10 to over 100 kW). For example, a 50 kW generator could consume about 2 litres of diesel per hour.
  • Consumption of Electric Hot Air Generators: Consumption is measured in kilowatt-hours. A 10 kW electric generator, for example, consumes 10 kWh per hour of operation. Considering the average cost of electricity, long-term use can result in significant expenses.

5. What are the advantages of a hot air generator over other heating systems?

Hot air generators offer several advantages over traditional heating systems, especially in terms of efficiency, portability and the ability to quickly heat large volumes of air.

  • Rapid heating. Hot air generators can heat large rooms quickly, making them ideal for situations where immediate heating is required.
  • Portability: Unlike central heating systems, hot air generators are often portable and can be easily moved from one location to another.
  • Energy efficiency: Modern models are designed to maximize energy efficiency, reducing consumption and operating costs.
  • Versatility. They can be used in a variety of environments, both indoors and outdoors, and in various climatic conditions.

6. How to choose the right hot air generator for your needs?

The choice of the hot air generator depends on several factors, including the environment in which it will be used, the type of power available, the power needed, and the budget. Here are some tips to guide you through your selection:

  • Type of environment: Consider whether the generator will be used in an open or enclosed environment. For indoor areas, an indirect or electric combustion model is preferred to avoid the accumulation of exhaust gases.
  • Thermal power: Evaluates the power of the generator based on the cubic meters of the area to be heated. The greater the volume, the greater the power.
  • Power supply: Choose a generator that uses an energy source that is easily accessible and convenient for you, such as gas, diesel or electricity.
  • Mobility: If you need to move the generator frequently, opt for a portable or trolley model.
  • Controls and Safety: Look for models with integrated thermostat and safety systems, such as overheating protections and oxygen level sensors.

7. What are the differences between a gas and a diesel hot air generator?

Gas and diesel hot air generators have several key differences that affect their application and use.

  • Power supply: Gas generators use natural gas or LPG as fuel, while diesel generators use diesel fuel. The type of fuel supply affects the range, operating costs and storage needs of the fuel.
  • Power: Diesel generators tend to have a higher heat output than gas generators, making them more suitable for heating very large spaces or environments with significant heat loss.
  • Emissions: Gas generators generally produce fewer emissions than diesel generators, making them more suitable for use indoors or in environments where greater attention is required to environmental impact.
  • Operating costs: The cost of fuel can vary significantly between gas and diesel, and this will affect long-term operating costs. Gas generators can be cheaper to use in areas with easy access to natural gas.

8. What safety precautions must be taken when using a hot air generator?

Safe use of a hot air generator requires several precautions to prevent accidents and ensure efficient operation.

  • Ventilation: Ensure that the area in which the generator is used is well ventilated, especially in the case of a direct combustion model, to avoid the accumulation of harmful gases.
  • Emission control: Regularly check that exhaust gases are expelled correctly and that there are no leaks in the ventilation or exhaust systems.
  • Use of appropriate fuels: Use only the fuel specified by the manufacturer, and ensure that it is safely stored away from heat sources.
  • Surveillance: Never leave the generator running unattended, especially indoors or overnight.
  • Regular maintenance: Checks and periodic maintenance of the generator to ensure proper operation and prevent failure.
  • Safety System Always use safety devices such as fire extinguishers at hand and carbon monoxide detectors when using combustion generators.

FAQ on hot air generators

1. What is a hot air generator used for?

A hot air generator is a device designed to produce and distribute hot air, primarily to heat large spaces that cannot be effectively heated with conventional systems. Its main function is to provide heat in industrial, agricultural, commercial and, in some cases, residential environments.

  • Heating of Industrial and Commercial spaces: It is used to heat large rooms such as sheds, warehouses, factories and showrooms, where heat must be distributed quickly and over large surfaces.
  • Agricultural sector: Used to maintain optimum temperatures in greenhouses, barns, livestock farms and agricultural product storage areas. It is essential to ensure animal welfare and crop growth in controlled environments.
  • Temporary Events and Outdoor spaces: Used in outdoor events, trade shows, tents and temporary facilities to ensure a comfortable environment even in adverse weather conditions.
  • Construction sites: Essential for heating rooms during construction or renovation work, preventing moisture and ensuring better working conditions.

2. How does a hot air generator work?

The operation of a hot air generator varies depending on the type of power supply, but in general, it is based on a common principle: The air is heated via an internal heat source and then distributed to the environment via a ventilation system.

  • Air intake: Air is drawn from the outside environment or from the inside via a blower.
  • Heating: The intake air passes through a heat exchanger, which is heated by a flame (in the case of combustion generators) or by electrical ballasts (in the case of electric generators). The flame is generated by the combustion of a fuel, such as diesel fuel, LPG or methane.
  • Hot air distribution: The heated air is then pushed through a ducting system or directly into the environment via a powerful blower, ensuring even heat distribution.
  • Temperature control: An integrated thermostat regulates the temperature by switching the generator off or on to maintain the desired heat level.

3. What is a hot air generator?

A hot air generator is a device that produces hot air for heating enclosed or semi-open spaces. It can be powered by a variety of energy sources, including fossil fuels (diesel, LPG, methane) or electricity, and is used in environments where large rooms need to be heated quickly.

  • Direct combustion generators: They heat the air directly by burning a fuel. They are very efficient but can only be used in well-ventilated rooms as they release exhaust gases into the environment.
  • Indirect combustion generators: The air is heated in a heat exchanger separate from the burner, so the distributed hot air is clean and smoke-free. These models are ideal for indoor use.
  • Electric generators: They use electrical resistors to heat the air. They are safer and suitable for indoor environments as they do not produce fumes, but their use is limited by the availability of electricity and the operating cost.

4. How much does a hot air generator consume?

The consumption of a hot air generator depends on several factors, including the type of generator, the rated power, the duration of use and the environmental conditions. The most important are:

  1. Generator efficiency: More efficient models consume less fuel or energy to produce the same amount of heat.
  2. Isolation of the environment: Well-insulated environments require less power to maintain the desired temperature.
  3. Intermittent use: Consumption can be reduced by using the generator only when absolutely necessary, with the aid of programmable thermostats.

Consumption may be expressed in litres of fuel per hour (in combustion models) or in kilowatt-hours (kWh) in electric models.

  • Consumption of hot air cannons with diesel or LPG: Consumption typically varies between 0.5 and 3 litres of fuel per hour, depending on the generator output (which can vary from 10 to over 100 kW). For example, a 50 kW generator could consume about 2 litres of diesel per hour.
  • Consumption of Electric Hot Air Generators: Consumption is measured in kilowatt-hours. A 10 kW electric generator, for example, consumes 10 kWh per hour of operation. Considering the average cost of electricity, long-term use can result in significant expenses.

5. How to choose a hot air generator?

Choosing the right hot air generator for your needs requires several key factors to be considered. The choice depends mainly on the specific application, the environment in which it will be used and the technical characteristics of the generator.

  • Type of power supply: Decide between a combustion generator (diesel, LPG, methane) or an electrical generator. Combustion generators are ideal for well-ventilated or semi-open environments, while electrical generators are best suited for indoor environments where safety and smoke-free are essential.
  • Thermal power: The output of the generator, expressed in kilowatts (kW), must be sufficient to effectively heat the desired area. To calculate the power required, consider the volume of the room to be heated, the level of insulation and the desired temperature.
  • Energy efficiency: Opt for a model with a high yield, which saves you operating costs in the long run. Condensing generators, for example, recover some of the heat from the exhaust fumes, improving efficiency.
  • Portability and size: Consider whether you need a fixed or portable model. Portable generators are ideal for construction sites, events or situations where the generator needs to be moved frequently.
  • Noise level: In environments where acoustic comfort is important, choose a generator with a low noise level, especially in combustion models that tend to be noisier.
  • Safety System Check for safety devices, such as automatic shut-off in case of overheating or carbon monoxide detectors in combustion models.

6. What does hot air do?

Hot air plays a key role in the process of room heating, directly affecting the thermal comfort and energy efficiency of a space. As the air is heated, it expands and becomes less dense, tending to rise upwards, thus creating natural circulation within a room.

  • Space heating: Hot air carries heat energy, heating surfaces and objects it comes into contact with. This process helps to raise the overall temperature of an environment.
  • Air circulation: The tendency of hot air to rise creates a convective movement, which can be used to evenly heat a space. However, in high ceiling environments, it is important to manage this circulation to avoid stratification of the hot air at the top, leaving the lower areas cooler.
  • Influence on comfort: Proper heating with hot air can significantly improve comfort within a building. However, too hot and dry air can also cause discomfort, dry skin and respiratory tract.

7. What is a hot condensing air generator?

A condensing hot air generator is a type of generator that uses advanced technology to recover some of the heat contained in the exhaust fumes produced by the combustion of fuel. This process increases the overall efficiency of the generator, minimizing energy losses and improving thermal performance.

  • Energy efficiency: Thanks to condensation, these generators can achieve thermal efficiency of more than 90%. This means that a higher percentage of the energy contained in the fuel is converted into useful heat for heating the air.
  • Emission reduction: Condensing generators emit less CO2 and other pollutants than conventional models because they make better use of fuel. In addition, the condensation process reduces the temperature of the exhaust fumes, making them less harmful.
  • Latent Heat Recovery: During combustion, water vapour is produced, which in conventional generators is released into the atmosphere. In condensing models, this steam is cooled until it condenses, releasing latent heat which is recovered and used to further heat the air.
  • Ideal Applications: These generators are particularly suitable for large industrial buildings, greenhouses and other environments where high thermal output and high energy efficiency are required.

8. How do I get hot air from one room to another?

Passing warm air from one room to another can be an effective solution for heating several rooms using a single heat source. There are different techniques and systems that allow heat to be transferred efficiently between different spaces.

  • Fans and air conveyors: These devices can be installed in walls or ceilings to push warm air from a heated room to other adjacent rooms. Some models include thermostats to automatically adjust the ventilation according to the temperature.
  • Ducting systems: Used mainly in centrally heated buildings, these systems distribute warm air through ducts connecting several rooms. They can be integrated with the hot air generator to distribute the heat evenly throughout your home.
  • Heat Transfer fans: These devices can be installed in doors or walls between rooms to facilitate the movement of hot air from one room to another. They are useful for transferring heat from warmer rooms to less heated rooms.
  • Strategic use of openings: Opening doors between rooms can promote natural circulation of warm air, especially when combined with ceiling fans that help push warm air down and through spaces.

9. What is the difference between a hot air heater and a fan heater?

A hot-air heater and a fan heater are both devices designed to heat the air in a room, but they differ in terms of design, application, power and mode of operation.

The main difference between a hot-air heater and a fan heater lies in power, size, and scope of application. Hot air heaters are suitable for heating large industrial or commercial spaces, while fan heaters are more suitable for domestic use in small rooms. In addition, the hot air heaters offer greater flexibility in terms of power supply and are designed for applications that require more heat output.

Hot air heater:

  • Power and size: Hot air heaters are generally larger and more powerful than fan heaters. They are designed to heat large rooms such as sheds, warehouses, greenhouses or industrial spaces. They can have powers ranging from a few dozen to hundreds of kilowatts (kW).
  • Power supply: They can be powered by fossil fuels (diesel, LPG, methane) or electricity. Combustion models are particularly suitable for outdoor or well-ventilated spaces.
  • Modes of operation: These heaters heat the air through a burner (in combustion models) or electrical resistors, and then distribute it to the environment via powerful fans. They are ideal for heating large volumes of air quickly.
  • Applications: They are mainly used in industrial, agricultural, construction and outdoor events where large spaces need to be heated efficiently.

Fan heater:

  • Power and size: The fan heater is a smaller, more portable device designed to heat smaller rooms such as home, office or bathroom rooms. The power of a fan heater is much lower, typically between 1 and 3 kW.
  • Power supply: These devices are powered exclusively by electricity. They work by heating the air via an electrical resistor and then spreading the warm air through a fan.
  • Modes of operation: The fan heater quickly heats air in confined spaces, but is not designed to maintain a constant temperature in large environments. Some models are equipped with a thermostat to automatically adjust the temperature.
  • Applications: They are used for heating small rooms, such as bathrooms or offices, where a quick and localized heat source is required. Because of their portability, they can be easily moved from room to room.

10. Why are they called hot-air guns?

Hot air guns are so called because of their shape and function, which reminds us of a "cannon" that can fire, or rather blow, powerful jets of hot air into an environment. This name is particularly evocative and reflects some of the specific characteristics of these devices:

  1. Cylindrical shape and robust structure: Hot-air guns often have a cylindrical or tubular shape, similar to that of a traditional cannon. This shape allows the hot air flow to be concentrated and directed in a specific direction with great force and precision.
  2. Air jet power: Hot air gunsare designed to generate a very powerful stream of hot air, which can be launched a considerable distance. This makes them ideal for heating large open or semi-open spaces, such as sheds, construction sites, event tents, greenhouses and the like. The force with which air is expelled is comparable to the "blow" of a cannon, hence the name.
  3. Versatility and applications: These devices are extremely versatile and can be used in a variety of settings, from heating industrial environments to preventing frost in agriculture. The ability to "fire" hot air with precision and power into specific areas makes them indispensable tools in many professional applications.
  4. Origin of the term: The term "cannon" has probably been adopted to figuratively describe the effect these heaters produce, namely the powerful and focused release of hot air, similar to the idea of a cannon firing projectiles.

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