REDwire Electric duct heater basics

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Northern Industrial Supply Co. (NISCO)

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Electric duct heaters from NISCO offer a range of benefits.

Electric duct heaters are used in industrial and commercial markets around the world. Within these different markets, duct heaters are also used for many different types of heating applications, including primary, secondary, auxiliary, space, variable air volume, multi-zone and even reheating. The heaters can vary in type from air handling units to water source heat pumps, and light or heavy commercial rooftop units.

With the many different types of duct heaters available, getting a grasp on the basics can help when the time comes to choose a heating solution.

Choose an established supplier

When purchasing duct heaters, it’s important to deal with a well-established company that can guarantee that all products are engineered and tested to current industry standards. Northern Industrial Supply Company (NISCO) can supply the innovative Neptronic electric heaters, which are safety tested and listed by UL, CSA and comply with the National Electric Code.

Understand the advantages

Electric duct heaters offer a number of benefits. For horizontally mounted applications, they can produce bi-directional airflow. They can also provide resettable all-limit controls, hinged cover access with locking latches, zero rating clearance, and components all mounted within the control panel. In addition, they can be provided with wire rack systems for extremely low pressure drop and extended element life.

When designing a duct heating solution, engineers use specialized software to specify everything from the sheet metal and element support racks to wiring and coil configurations.

Common characteristics

While every heater is different, there are some common characteristics that can help you get started with finding the right model:

  • Basic duct heaters are typically limited to sizes smaller than 36 by 36 inches.
  • Custom heaters are available in sizes up to 120 by 144 inches, and can include a number of accessories or remote control panels.
  • Round duct heaters are also available. They come in diameters up to 10 inches.
  • Register heaters are six inches in diameter and feature wired or wireless thermostats.

Visit the NISCO website for more information on electric duct heaters.


Northern Industrial Supply Co. (NISCO)

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