Duct Heater

Duct Heaters represent advanced air heating technology specifically engineered for direct installation in air handling units, HVAC systems, and industrial ductwork to efficiently heat non-pressurized air streams. These sophisticated heating assemblies are designed to provide rapid thermal response, uniform airflow heating, and exceptional energy efficiency in demanding air treatment applications. The innovative design enables seamless integration into existing ductwork while delivering precise temperature control and optimal heating performance for diverse industrial and commercial air heating requirements.

Fast thermal response
Low pressure drop designs
High watt density up to 40 W/in²

Technical Specifications

Frame Material Options	Galvanized Steel, SS304/310/316/321 (application dependent)
Heating Element Materials	SS304/310/316/321, Incoloy, Titanium (custom options)
Element Configuration	Open Coil, Tubular, Finned Tubular (optimized designs)
Maximum Watt Density	Up to 40 W/in² (6.2 W/cm²)
Power Rating Range	Up to 2 MW (custom ratings available)
Voltage Options	Up to 600V AC/DC (customizable configurations)
Air Velocity Range	0.5–20 m/s recommended for optimal performance
Operating Temperature Range	–20°C to 650°C air temperature
Pressure Drop	Optimized low pressure drop design
Temperature Control Accuracy	±2°C with integrated sensors and controllers
Safety Features	Airflow interlocks, thermal cutouts, over-temp protection
Mounting Options	Flanged, slip-in, custom configurations available
Enclosure Rating	IP65/67 standard, hazardous area options available
Service Life	5 to 10+ years typical HVAC operation

Construction

Advanced Heating Elements: Choice of open-coil NiCr elements, MgO-packed tubular elements, or finned-tubular configurations engineered for optimal heat transfer, rapid thermal response, and extended operational life.
Precision Mounting Frame: Robust galvanized steel or stainless-steel frame with flanged or slide-in rail configurations for secure duct installation, proper element support, and easy maintenance access.
Weather-Resistant Terminal Housing: IP65/67-rated, ATEX, or CIMFR certified electrical enclosure with ceramic terminal blocks and cable glands ensuring secure electrical connections and environmental protection.
Enhanced Fin Assembly: Optional galvanized steel or stainless-steel fins mechanically bonded to tubular elements for significantly improved convective heat transfer performance and thermal efficiency.
Thermal Insulation System: High-temperature ceramic fiber insulation and precision gasketing preventing heat loss, air bypass, and ensuring maximum thermal efficiency and operator safety.
Integrated Control Interface: Optional temperature sensors, control panels, and safety systems including airflow switches, over-temperature protection, and automated control interfaces for precise air heating management.

Key Features

Energy-efficient operation with optimized heat transfer design
Corrosion-resistant materials for harsh industrial environments
Modular design enabling easy maintenance and element replacement
Custom shapes and configurations for specific applications
Uniform temperature profiles across entire duct cross-section
Low pressure drop characteristics preserving airflow efficiency
Rapid thermal response for quick temperature adjustments
Advanced safety systems including airflow and temperature protection
Hazardous area certifications for classified location applications
Multiple element configurations optimizing heat transfer performance

Applications

HVAC air handling units and climate control systems
Industrial drying ovens and curing tunnels
Paint booths and powder coating production lines
Food processing hot-air treatment systems
Pharmaceutical cleanroom air handling
Semiconductor manufacturing air treatment
Annealing and heat treatment chamber heating
Textile drying and fabric processing systems
Dehumidification and moisture control applications
Chemical processing ventilation heating