Maltec-H Duct Tubular Heater | Heating Elements

Duct heaters are the most easily adaptable industrial heating solutions for most non-pressurized, air-heating systems. Duct heaters are ideal solutions for a variety of applications, including primary heating, supplementary heating (i.e., supporting a heat pump), auxiliary heating, humidity control or multi-zone heating. Duct heaters comes in various sizes and dimensions to fit any compartment. There are three types of duct heaters available: open coil, tubular or finned tubular heating elements that are either flanged or inserted in the duct.  Air duct heaters are primarily used in air flowing ventilation systems and comfort-heating applications while process duct heaters are mainly used for industrial process heating applications (ovens that require re-circulated air or forced circulation).

Air duct heaters are used for tempering forced air in many industrial processes. Heater wattage depends on air outlet temperature (up to 1200°F [650°C]) and air velocity. Smaller duct heaters can be tandem mounted in place of one large unit to meet space limitations and simple installation. Heavy wall Incoloy tubular heating elements (field replaceable) provide protection against corrosive air environments and resistance to vibration when compared to open coil elements. Duct heaters can be designed specifically for high pressure and hazardous locations. Turnkey systems including the duct heater, power and temperature control panel, and the temperature and over-temperature sensors can also be provided.

Material Sheath Selection 

• 304 Stainless Steel
• 316 Stainless Steel

 Typical Application

• Heat treating
• Air drying operations
• Air handling equipment
• Forced air comfort heating
• Core drying
• Fan coils
• Booster air heater
• Air pre-heating
• Terminal reheating
• Multizone reheating
• Heat pump auxiliary systems
• Return air heating
• Resistor load banks
• Annealing