A Hot Air Furnace is one of the most common heating systems used in industrial environments. These systems are ideal for heating relatively large spaces due to their high thermal capacity, affordable price, uniform heat distribution, safety, and high efficiency.
In this article, we will introduce you to the Hot Air Furnace, its price, benefits, drawbacks, and various types.
What is a Hot Air Furnace?
According to the Code of Federal Regulations (CFR), a Hot Air Furnace is a type of industrial heating system that has a thermal capacity of at least 50,000 kilocalories (58kW) per hour.
The main components of these systems include the burner, boiler, fan, and heat exchanger. High-quality Hot Air Furnaces are energy-efficient and are ideal for heating greenhouses, poultry houses, gyms, sports halls, industrial environments, and more.
How a Hot Air Furnace Works
The operation of a Hot Air Furnace is not complicated. Here is a step-by-step guide to how it works:
- When the ambient temperature decreases, the burner is turned on by the environmental thermostat.
- Once the burner is activated, the boiler heats up quickly, reaching a temperature of up to 450°C.
- After the boiler heats up, the fan is activated by the thermostat, drawing air into the heater, where it is heated by the hot boiler.
- The heated air is then distributed throughout the environment via ducts or freely in the space.
- Finally, after absorbing heat from the multi-layered heat exchangers, the combustion products (including carbon monoxide) are expelled through the exhaust system.
- Once the desired temperature is reached, the burner and, eventually, the fan are switched off. If necessary, the fan can be kept on to ensure air circulation.
- This process repeats when the temperature drops again.
Types of Hot Air Furnaces Based on Fuel
- Gas
- Oil
- Dual-fuel
- Coal-powered
- Electric
Benefits of Hot Air Furnaces
- High thermal efficiency
- Easy installation and maintenance
- High safety
- Does not occupy excessive space compared to other industrial heating systems
- Affordable price
- Even heat distribution
- Clean air output (especially in indirect flame models)
- Long durability and lifespan
Price of a Hot Air Furnace
Hot Air Furnaces are available in various capacities and price ranges. The price range for Hot Air Furnaces typically varies from 2000 to 50000 USD, depending on several factors, such as:
- Thermal capacity
- Fuel type and burner brand
- Boiler material
- Motor power and brand
- Type of body paint coating
- Number and type of fans (axial or centrifugal)
- Quality of materials, including electrical components
- Thickness and material of the body
Hot Air Furnace Boilers
The design and material of the boiler and heat exchanger play a crucial role in the efficiency of a Hot Air Furnace. Hot Air Furnace boilers are often made of low-quality steel sheets welded together.
These boilers may develop cracks after several cycles of expansion and contraction, releasing carbon monoxide that can harm plants and products. However, high-quality Hot Air Furnaces use heat-resistant stainless steel, offering excellent resistance to high temperatures. The standard boiler connections, made according to European technology, are designed to be easily replaceable.
Tips for Buying a Hot Air Furnace
- Size and dimensions of the Hot Air Furnace
- Thermal efficiency
- Air throw
- National and international certifications and standards
- Brand of the manufacturer
- Fuel type and burner brand
- Energy rating label
- Number and type of fans
- Thermal capacity
- Boiler material
Drawbacks of Hot Air Furnaces
Hot Air Furnaces may have some drawbacks for certain commercial and residential applications:
- The fan might increase dust circulation in the environment.
- If long ducts are used, there may be some heat loss.
- The powerful fan in efficient Hot Air Furnaces can produce noise, which may be bothersome for some.
Installation and Setup
Hot Air Furnaces are highly sensitive heating systems, and a single mistake during installation can lead to irreparable consequences. Therefore, it is essential to seek professional assistance from trusted installers affiliated with the manufacturer to prevent short-term and long-term hazards.
Applications and Uses of Hot Air Furnaces
- Greenhouses
- Poultry farms
- Sports halls and gyms
- Conference halls
- Warehouses
- Storage facilities
- Factories
- Swimming pools
KGY Hot Air Furnace
If you’re looking to buy a Hot Air Furnace, instead of purchasing standard, non-compliant heaters, you can get the latest and most advanced Hot Air Furnaces in the market from KGY. With over 30 years of experience, KGY is a pioneer in the heating, cooling, and ventilation industry in Iran.
This company produces state-of-the-art, safe, and efficient products that are environmentally optimized. For consultation, you can contact the sales team of KGY. The engineering sales team will evaluate your environment and recommend the most suitable heating system. All KGY products come with a 1-year warranty and 10 years of after-sales service.
