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China Air Duct Heaters - High-Quality Suppliers & Factory Options for Industrial and HVAC Applications

Air duct heaters are essential components in industrial and air conditioning ducts, designed to effectively elevate the temperature of air for improved output. These heaters are typically installed through a side opening in the duct system, making them versatile for various applications. Our products are categorized based on operating temperature—low, medium, or high—and air velocity—low, medium, or high. As a leading manufacturer and supplier in China, we take pride in our factory's commitment to quality and performance, providing reliable air duct heaters that meet industry standards. Enhance your operational efficiency with our tailored solutions today!
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    Technical Parameters

    Air duct heaters are primarily used for heating air in air ducts and are available in three different sizes: low-temperature, medium-temperature, and high-temperature.
    Low-Temperature
    ≤ 160°C
    Medium-Temperature
    ≤ 260°C
    High-Temperature
    ≤ 500°C
    Structural & Safety Features
    Anti-Vibration Design

    Steel plates are utilized to support the heating tubes, effectively reducing operational vibration.

    Over-Temperature Protection

    An over-temperature control safety device is pre-installed inside the junction box.

    Fan-Heater Interlock

    A coupling device ensures that the heater starts only after the fan has successfully started.

    Differential Pressure Device

    Installed before and after the heater to prevent operation in the event of fan failure.

    Operating Pressure Limit

    The gas pressure heated by the duct heater should generally not exceed 0.3 kg/cm². If pressures exceeding this limit are required, a circulating electric heater must be used.

    Frequently Asked Questions (FAQ)
    What are the three temperature classifications of air duct heaters?

    Air duct heaters are categorized into low-temperature (up to 160°C), medium-temperature (up to 260°C), and high-temperature (up to 500°C) types.

    How does the design reduce vibrations in the heater?

    They feature a specific structural design that uses steel plates to support the heating tubes, which effectively reduces vibration during operation.

    What safety mechanisms prevent over-temperature issues?

    An over-temperature control safety device is installed directly inside the junction box to prevent overheating.

    Why is there a coupling device between the fan and the heater?

    The coupling device acts as a safety interlock, ensuring that the heater can only start after the fan is running.

    How is the heater protected in the event of fan failure?

    A differential pressure device is installed before and after the heater to monitor pressure changes and prevent damage if the fan fails.

    What is the maximum gas pressure limit for standard air duct heaters?

    The heated gas pressure should generally not exceed 0.3 kg/cm². If your application requires higher pressures, a circulating electric heater should be used instead.