What to Consider Before Buying an Air Heater


Industrial electric air heaters play a crucial role in maintaining optimal temperatures and ensuring efficient operations in various industrial settings. Whether you need to heat a large factory or manufacturing facility, choosing the right electric air heater is essential. However, with so many options available, it’s important to consider several factors before making a purchase decision. In this blog post, we will explore the key considerations that will help you make an informed choice when buying an industrial electric air heater.

1.  Heating Capacity:

One of the primary factors to consider is the heating capacity of the electric air heater. Calculate the required heat output based on the size of the area you need to heat and the temperature rise required. Ensure that the heater’s capacity matches your specific needs to achieve efficient and effective heating.

2.  Energy Efficiency:

Energy efficiency is crucial to minimize operational costs and reduce environmental impact. Look for electric air heaters that are energy efficient. Consider features such as multiple heating stages, adjustable thermostats, and programmable timers that allow you to optimize energy consumption based on your heating requirements.

3.  Safety Features:

Industrial settings demand robust safety measures. Therefore, prioritize air heaters with built-in safety features. Look for features such as overheat protection and flame-resistant materials. These features can help prevent accidents and ensure the well-being of your employees and property.

4.  Installation and Maintenance:

Consider the ease of installation and maintenance when selecting an electric air heater. Look for heaters that come with clear installation instructions and require minimal maintenance. Additionally, check if the manufacturer provides reliable customer support and access to spare parts to ensure a hassle-free experience.

5.  Durability and reliability:

Investing in a durable and reliable electric air heater is crucial to ensuring uninterrupted operations. Read product reviews, check the warranty period, and consider the reputation of the manufacturer before making a purchase. Look for heaters made from high-quality materials that can withstand harsh industrial conditions.

6.  Customization Options:

Depending on your specific requirements, you may need an electric air heater that offers customization options. Consider features such as adjustable louvers, variable fan speeds, and temperature control systems that can be tailored to your needs.

How do air heaters work?

Industrial electric air heaters work by using an electric heating element to generate heat, which is then circulated into the surrounding air. Here’s a general overview of how they work:

1. Electric Heating Element:

Industrial electric air heaters contain one or more electric heating elements, typically made of high-resistance (Nickel Chromium Resistance Wire) wire or an alloy. When an electric current flows through these elements, they heat because of the electrical resistance.

2. Air Circulation: 

The heated air is circulated using a fan or blower. The fan draws in ambient air from the surroundings and passes it over the electric heating elements.

3. Heat Transfer:

As the ambient air passes over the electric heating elements, it absorbs the heat generated by the elements. The heat is transferred from the elements to the air through conduction.

4. Heating Control:

Industrial electric air heaters usually have built-in thermostats or temperature controllers to regulate the desired temperature. The thermostat monitors the air temperature and signals the heating elements to turn on or off as needed to maintain the set temperature.

5. Air Output: 

The heated air is then discharged into the desired space or directed through ductwork to specific areas in the industrial facility. Some heaters may have adjustable louvers or directional vents to control the direction and spread of the heated air.

6. Safety Features:

Industrial electric air heaters often incorporate safety features to prevent overheating and potential hazards. These features may include thermal cut-off switches, overload protection, and flame-resistant materials.

Overall, electric air heaters provide efficient and controlled heating by converting electrical energy into heat energy through the heating elements. They offer reliable and controllable heating solutions for industrial applications where precise temperature control and rapid heat distribution are essential.

Construction of an air heater

1. Nickel chromium Resistance wire coils for maximum heater life, evenly wound for even heat distribution.

2.Mica Sheet, which is dielectric, lightweight, resilient, and stable at high temperature, is used for holding coils in place.

3. Stainless steel sheath for corrosion resistance and high strength.

4. Glass wool insulation for high thermal resistance with low thermal conductivity.

5. Teflon-coated control cable and thermistor cable provide superior insulation and are suitable for high-voltage applications.

6. Mica insulation has the dielectric property to isolate a high-resistance coil from the sheath.

Advantages of Electric Industrial Air Heaters:

1.  Energy Efficiency: Electric air heaters are more energy efficient compared to other heating options, such as gas or oil heaters. They convert almost all the electrical energy into heat, resulting in minimal energy waste.

2.  Clean and Environmentally Friendly: Electric heaters do not produce any emissions or combustion byproducts, making them environmentally friendly. They do not require fuel combustion and eliminate the release of pollutants or greenhouse gasses into the air.

3.  Easy Installation: Electric air heaters are relatively easy to install, especially when compared to systems that require fuel storage or complex ventilation systems. They typically require minimal modifications to existing infrastructure, reducing installation time and costs.

4.  Precise Temperature Control: Electric air heaters offer precise temperature control, allowing users to adjust and maintain the desired temperature accurately. This level of control is particularly important in industrial settings where specific temperature requirements are necessary for processes or equipment.

5.  Low Maintenance: Electric heaters generally have fewer moving parts compared to other heating systems, resulting in lower maintenance requirements. They rarely require regular cleaning, fuel refills, or exhaust system maintenance.

6.  Silent Operation: Electric air heaters operate quietly, making them suitable for environments where noise levels need to be kept to a minimum, such as offices or production areas.

Marathon is the best air heater manufacturer in India

Marathon Heater is considered one of the best industrial electric air heater manufacturers in India due to several key factors.

First, Marathon Heater (I) Private Limited has established itself as one of the largest heater manufacturing companies in India. With over a decade of experience in the industry, Marathon Heater has been consistently delivering high-quality industrial heaters to meet the specific needs of customers.

Second, Marathon Heater offers a wide range of industrial heaters, including process heaters and air heaters, catering to various heating requirements. This diverse product range allows customers to choose the most suitable heater for their specific applications, ensuring efficient and effective heating solutions.

Marathon Heater prides itself on providing engineered heating solutions and challenging heating applications with innovative approaches. This commitment to technological advancements and tailored solutions further solidifies Marathon Heater’s position as a leader in the industrial heating industry.

Marathon Heater has a strong focus on customer satisfaction and prioritizes its customers’ requirements. The company offers excellent customer support and ensures that client’s needs to understand and addressed effectively.

These factors contribute to Marathon Heater’s reputation as one of the best industrial electric air heater manufacturers in India, setting them apart from their competitors.


Choosing the right industrial electric air heater requires careful consideration of various factors. By assessing the heating capacity, energy efficiency, safety features, installation and maintenance requirements, environmental impact, noise level, durability and reliability, and customization options, you can make an informed decision. 

Remember, investing in a quality electric air heater will not only provide efficient heating but also contribute to the overall productivity and safety of your industrial facility.

Explore more about Air Heaters at Marathon Heater and experience the innovation driving heating and sensing technologies forward.

Contact us at for your requirements for any industrial heaters.