Duct Heaters

Duct heaters are commonly used in commercial, industrial, and residential applications. They’re used to heat the air or gas flowing through a duct system. Typically installed within the ductwork of heating, ventilation, and air conditioning (HVAC) systems.


All our duct heaters are made to customer requirements using data-driven design, matching power to airflow, the temperature required and sheath temperature.

Before we begin the manufacturing process of your custom duct heater, you’ll receive an assembly illustration to approve. Get in touch to arrange a design consultation and discuss your requirements.

The stab in heater shown was for a paint spraying  original equipment manufacturer.  80Kw with ceramic fibre insulation plug.
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Duct heaters consist of an electric heating element, such as coils or strips, enclosed within a protective housing. Elements used vary between Incoloy 800, stainless steel 304 and 316. They’re secured with brass or stainless steel compression fittings into stainless steel sheet metal work.

Our duct heaters can be integrated with a busbar in stages with overheat cutouts and thermostats or thermocouples for better distribution and control.

The photograph shows a full duct of only 30Kw. The relatively large  number of elements used was to keep the sheath temperature low  enough to prevent melting of particulates in the air flow.



We can supply heaters for air temperatures up to 600°C (1,112°F), providing a broad range of applications. Our duct heaters can be used for temperature control in large office buildings or to help aerospace companies apply heat to regulate the fueling of spacecraft.
If your needs require an especially high-wattage output, this may have to be made using separate modules.

Other applications include uses in drying ovens, paint-drying, process machinery, dehumidifiers, grain dryers and more.

The photograph shows a heater used to heat  high velocity air to aid ignition further down the airflow.


Duct Heater FAQs

Our bespoke duct heating systems require a detailed design process that is best discussed with a member of our team. But you can find out more below to see if we’re the right fit for you.

When you choose IEE as your duct heating supplier, you’re not just getting a fully customised product; you’re getting more than 40 years of expertise and a first-class team. Our staff are always kept up to date with the latest tools, workshops and processes. We have consistently enhanced and customised our products to meet the requirements of both manufacturers and end-users. Our products are crafted using the best available materials, subjected to rigorous safety tests, and ensure unwavering reliability.

We don’t currently offer installation; however, our technical and sales teams are always more than happy to provide additional advice and information.

All of our duct heaters are bespoke, built and designed to our customer’s exact needs. This process can take time, so we encourage customers to get in touch with us sooner rather than later. Once your duct heating unit is completed, shipping itself will be only a matter of days. We also ship internationally, but delivery times may vary.

Although we do not offer a formal warranty, our team is dedicated to providing excellent aftercare services. We encourage our customers to reach out to us promptly if they encounter any concerns or issues.

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Contact us today with your duct heating requirements, and a member of our team will get back to you.

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