Electric Duct Heater

Our Electric Air Duct Heaters are designed for reliability and efficiency, these heaters provide precise temperature control for a wide variety of air handling applications. Whether you need primary heating, supplemental heat, or reheat for dehumidification, our custom-engineered solutions ensure consistent performance and seamless integration into your existing ductwork.

How It Works

An Air Duct Heater is installed directly into a forced-air system. As air passes over the heating elements (typically open-coil or finned tubular), the electric energy is converted into heat, raising the temperature of the air stream to the desired set point. Our heaters are controlled by an integrated terminal box featuring robust contactors, terminal blocks, and optional solid-state power controllers for smooth, proportional control.

Key Features & Benefits

• High-Quality Heating Elements: We utilize durable nickel-chrome resistance wires, insulated with ceramic bushings to prevent electrical shorts and ensure long-lasting performance. Elements are supported to prevent vibration and sagging.

• Customizable Configurations: Available in various sizes, voltages (up to 600V), and power ratings (kW) to match your specific air velocity, duct dimensions, and heating requirements.

• Integrated Controls: The pre-wired control panel includes magnetic contactors, fuses, and a terminal strip for simple field wiring. Options include SCR power controllers, disconnect switches, and auxiliary contacts for remote monitoring.

• Comprehensive Safety Protections: Built with multiple safety limits to prevent overheating:

  1. Automatic Reset Limit Controllers: Regulate the air temperature.

  2. Manual Reset Safety Cut-Outs: Provide fail-safe protection in case of airflow loss or fan failure.

  3. Airflow Proving Switches: Ensure the heater only energizes when adequate airflow is detected.

• Easy Installation: Designed for horizontal or vertical mounting. Slip-in flanges or angle frames allow for quick installation into rectangular or round ducts.

Applications

• Commercial HVAC: Reheat coils for zone control, fresh air tempering, and lobby or entranceway heating.
• Industrial Processes: Drying ovens, pre-heating for manufacturing lines, and maintaining specific temperatures in storage areas.
• Clean Rooms & Laboratories: Providing precise temperature stability required for sensitive environments and equipment.
• Greenhouses & Agriculture: Maintaining optimal growing temperatures through forced-air heating systems.
• Make-Up Air Units: Tempering cold outside air before it enters the building to improve comfort and reduce humidity.

Control

• Digital temperature controller
• SSR or SCR power controllers
• Heat ON/OFF switch
• Audible and visible alarm indicators
• Control Accuracy: ±1°C
• 3∼3000KW input power supply to your specifications
• Temperature recorder (optional)
• PLC with HMI(touch panel) (optional)
• Programmable temperature controllers (optional)

Specifications

Notes: For more models, please contact us. The unit could be entirely bespoke, we can design and tailor heating capacity,  etc. to your specification.