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Electric Heater Bundles and Inline Process Heaters

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    Electric Air Heaters for Paint Shops & Process Air Heating

    High-velocity performance, precise control, and built to endure — clean, efficient process air heating for demanding industrial environments.

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    Finned tubular electric air heater bank with integral control enclosure
    Finned tubular electric air heater bank with integral control enclosure.

    Electric Air Heater Specifications

    Heating capacity From a few kW to 1000+ kW (single or multi-bank) — contact for sizing
    Power supply 415 V, 3-phase, 50 Hz standard; alternative voltages on request
    Element type Finned tubular elements for forced-convection air heating
    Sheath / fin material SS 304, SS 316, or Incoloy 800 — selected to suit air condition
    Max process air temperature Up to limits set by element alloy and airflow
    Configuration Ductable assembly, or supplied with inlet / outlet transition pieces

    What is an Electric Air Heater?

    An electric air heater converts electrical energy into controlled, forced-convection heat using finned tubular elements, for use with blowers and air handling units (AHUs). Generally supplied as a ductable assembly or with inlet and outlet transition pieces, these heaters are ideal for heating uncompressed air and integrate easily with HVAC, process, and drying systems.

    Where it's used

    Industry and process applications — tap a chip to view the related industry page.

    Paint Shops Plastic Component Manufacture Curing, Drying & Baking Combustion Air Preheat Make-up Air Systems Pharma & Food Conditioning Dehumidification Freeze Protection Hazardous-Area (Ex) Zones

    Key Benefits of Electric Air Heaters

    • Fast heat-up and responsive control for tighter process temperature stability.
    • Energy-efficient direct electric heating with minimal transmission losses.
    • Compact, modular designs for duct-mount, cabinet, or inline installations.
    • Material and coating options to suit clean, corrosive, or humid process conditions.
    • Built for safety with over-temperature cutouts and airflow interlocks.
    • Serviceable components — easy element replacement and access panels reduce downtime.
    Multi-bank finned duct air heater with control box Flameproof Ex'd' electric air heater with orange flameproof enclosure
    Multi-bank finned duct air heater with control boxes (left) and flameproof (Ex'd') air heater (right).

    Electric Air Heaters Engineered for Performance

    • Temperature range suitable for typical industrial drying and heating duties, up to process limits set by element alloys and airflow.
    • Airflow capacities from small recirculation loops to high-volume supply systems.
    • Mounting options: duct / flange, cabinet, inline, and blower-integrated units.
    • Control compatibility with PID, PLC, and building management systems for staged or variable power control.
    • Explosion-proof and hazardous-area designs available for classified zones.

    Typical Applications of Electric Air Heaters

    Capacity is sized to the airflow and required temperature rise — contact our engineering team for sizing.

    Application Configuration Typical Air Condition Sheath / Fin Material
    Paint shop supply-air heating Ductable finned bank Clean process air SS 304
    Curing, drying & baking Inline / duct heater Elevated supply air SS 304 / SS 316
    Combustion air preheat Duct / flange heater High-volume supply SS 316 / Incoloy 800
    Make-up air & air reheat coils Cabinet / inline HVAC supply air SS 304
    Pharma & food conditioning Inline circulation / duct Hygienic clean air SS 316
    Hazardous-area air heating Flameproof (Ex'd') duct Classified zone SS 316 / Incoloy 800

    Electric Air Heater Construction & Materials

    • Finned tubular heating elements arranged in serviceable banks for high surface area and rapid heat transfer to the forced-air stream.
    • Casing in stainless or coated steel with access panels for inspection and element replacement.
    • Inlet and outlet transition pieces or flanged duct connections for direct integration with ducting and AHUs.
    • Material and coating options selected for clean, corrosive, or humid air streams.
    • Integral terminal box / control enclosure; flameproof (Ex'd') enclosures available for classified areas.
    Open finned-element duct heater showing the element bank, casing, and terminal enclosure
    Open finned-element duct heater showing the element bank, casing, and terminal enclosure.

    Electric Air Heaters Standards & Safety

    Standard / Feature Details
    Over-temperature protection Cutouts and high-limit thermostats safeguard elements and ductwork
    Airflow interlock Prevents elements from energising without proven airflow
    Flameproof (Ex'd') Ex'd' certified for Zone 1 / Zone 2 classified areas
    IS/IEC 60079 / IECEx Flameproof enclosure standards for hazardous areas
    IP65 / IP66 Ingress protection for control enclosures
    Third-party inspection Test certificates available on request

    Downloads

    Datasheet (PDF) General Arrangement Drawing Product Brochure

    Related Products

    Flameproof (Ex'd') Air & Duct Heaters

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    Thyristor Control Panels

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    Circulation & Immersion Heaters

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    Why Choose Telelec

    Telelec combines decades of industry experience, custom engineering, and local manufacturing to match heaters to exact process, safety, and control requirements. Our solutions are proven across oil & gas, petrochemical, metal finishing, and other process industries where reliability and predictable performance matter.

    Telelec designs and manufactures finned electric air heaters for paint shops, curing and drying lines, and process air systems — supplied across defence, aerospace, automotive and metal-finishing industries.

    FAQ

    An electric air heater heats a forced-air stream for processes such as paint-shop air supply, curing, drying, baking, combustion-air preheat, and make-up air conditioning. Finned tubular elements transfer heat to air pushed by a blower or AHU, and the assembly integrates inline or via duct flanges with HVAC and process systems.
    Outlet air temperature depends on airflow, kW rating, and element alloy. Telelec sizes each heater to the required temperature rise for the design airflow, up to the process limits set by the element sheath material. Higher-temperature duties use SS 321 or Incoloy 800 elements.
    Yes. Where the installation is in a classified zone, Telelec supplies flameproof (Ex'd') air heaters and duct heaters certified for Zone 1 and Zone 2 areas, built to IS 2148 and IECEx flameproof standards, with control enclosures rated accordingly. However due consideration is to be made for VOCs (volatile organic compounds) present in the air stream.
    Air heaters are controlled by contactor staging or by thyristor (SCR) panels for variable, near-continuous power control. They integrate with PID controllers, PLC, and building management systems, and include over-temperature cutouts and airflow interlocks for safe operation.
    A duct (air) heater heats uncompressed air flowing through ductwork or an AHU using finned elements for low pressure drop. A circulation heater heats a fluid — air, gas, or liquid — passing through a closed vessel under pressure. Paint-shop and HVAC supply-air duties use duct air heaters.

    Specify Your Air Heater

    Tell us your airflow, inlet and outlet temperature, available power supply, and area classification, and Telelec's engineering team will propose a tailored air heater that balances performance, safety, and cost-effectiveness.

    Talk to an Engineer Request Datasheet