Introduction to Electric Duct Heaters

Electric duct heaters are used around the world for industrial and commercial markets. Examples of heaters available include VAV equipment, air handling units, water source heat pumps, and light/heavy commercial rooftop units. When looking for duct heaters, it is imperative to choose a well-established company, one that guarantees all products are properly engineered and tested according to current industry standards.

Applications for Electric Duct Heaters

Within the different markets that use electric duct heaters are various applications. For example, these heaters are commonly used for primary heating, secondary heating, auxiliary heating, space heating, variable air volume heating, multi-zone heating, and even reheating. Regardless of the application, engineers use special computer software to specify wiring and coil configurations, controls, sheet metal, element support racks, and more. In addition, the software makes customization it possible in some cases.

Examples of Heater Characteristics

Every heater has unique qualities and characterizations. Below are just a few examples of what electric duct heaters entail:

• Basic and more cost-efficient duct heaters are generally limited to size with the maximum being 36×36 inches

• Custom heaters that measure up to 120×144-inches are also available, to include a number of options for accessories

• Custom duct heaters also up to 120×144-inches that feature remote control panels

• Round duct heaters are sold in diameters of 6, 8, and 10-inches

• Register heaters are 6-inches in diameter and boast wired or wireless thermostats

Electric duct heaters used by the appliance market are made to provide dedicated heat or to serve as supplemental heat for existing systems. These typically include space, primary, secondary, auxiliary, multi-zone, and VAV heating systems, as well as reheating and replacement units.

Some key benefits associated with electrical duct heaters include producing bi-directional airflow for horizontally mounted applications, resettable all-limit controls, hinged cover access with locking latch, wire rack system that offers extremely low pressure drop and extended life of the element, zero rating clearance, and for many models, components that are all mounted within the inside control panel.

All electric duct heaters are unique but common features include airflow switches, disconnect switch, power fusing, contactors, and capacity controls. By working with a reputable company, the right heater can be chosen specific to industry and application.

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