Duct Heaters Manufacturers and Suppliers

IQS Directory provides an extensive list of duct heater manufacturers and suppliers. Utilize our website to review and source duct heater manufactures with our easy-to-use features which allow you to locate duct heater companies that will design, engineer, and manufacture duct heaters for your exact specifications. Our request for quote forms make it easy to connect with leading duct heater manufacturers. View company profiles, website links, locations, phone number, product videos, customer reviews, product specific news articles and other production information. We are a leading manufacturer directory who will connect you with the right manufacturers whether you are looking for duct electric heaters, heavy duty duct heater, or commercial duct heaters.

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ARTICLES AND PRESS RELEASES

  • How to Install Duct Heaters

    Duct Heaters My cousin owns a heating and cooling company and often times in the summer and winter I would help him with jobs and projects that were too big for one man. In the process of helping him over my winter breaks, I learned quite a bit about the heating side of the HVAC industry and what components are needed in order to get the proper results desired. Initially I did not think this would be a difficult task to help him, but I soon learned of the importance...

  • Preventing Thermal Heat Loss

    Duct Heaters If not properly insulated, a lot of energy can be lost through your air ducts. Insulated duct heaters or cooling ducts can significantly reduce unwanted heat loss or gain. The U.S. Department of Energy estimates this reduction can be up to about 30 percent. Non-insulated metal ducts bleed out large amounts of thermal energy. By insulating your metal ducts, you can save a significant amount of money on your energy bill. To save money on electrical expenses there are three ways to insulate air ducts. Keep in mind...

  • Duct Heaters Biggest Fan

    Duct Heaters I am a huge fan of duct heaters for a couple reasons. The first is obvious, that it keeps whatever space I am in at a comfortable temperature, one I can change to suit me precisely when I am in my own home or enjoy when in the mall or grocery store as un-chilly. The second reason involves the noise a duct system makes whenever it kicks on to maintain the temperature set by the thermostat. The humming of a central heating system, which is what a duct...

  • Duct Heaters, A Benefit of Winter Heating

    Every building has a heating ventilation and air conditioning system in it with ducts that run throughout it to create a controlled, comfortable climate. By running these systems it keeps us cool in the summer and warm in the winter. All of the air ducts in the system in some way or another connect to each other and to the unit that produces the hot or cool air. The ducts run so that they are spread out enough that at least one in connected to a vent in every room...

  • Rapid Cooling of Aluminum Nitride Heaters

    by Mark Everly and Dan Block, Watlow Electric Manufacturing Company The continuing increase in the consumption of semiconductors has created a need for faster throughput in many semiconductor production processes. Some of these processes, such as die bonding and testing of integrated circuits, require cyclic heating and cooling. Increasing the throughput for these cyclic thermal processes requires decreasing heating and cooling times. Recent advancements in heater technology using a aluminum nitride (AlN) matrix material allows for substantial reductions in heating time and creates a need for cooling methods that contribute...

Industry Information

Duct Heaters

A duct heater is a heavy duty modular unit installed in the ventilating ductwork of commercial, residential and institutional HVAC systems, although smaller "duct" heating elements are used in the forced air heating systems of vehicles. Duct heaters can be complementary to a central heating system that utilizes forced air heating, also known as forced circulation heating or convection heating, where air is the medium that transfers heat. Fans and blowers are integral to the transfer of heat; their motion conveys the air through the duct heater.

Duct heaters work with existing central forced-air heating systems to preheat fresh air or returned air. The central air handler filters the air, re-heats it and blows it through the ductwork. The conditioned air is distributed throughout the building and is then returned to the central air handling unit (AHU). Electric heater manufacturers generally construct duct heaters in rectangular or square box configurations, but they can create rounded ones for the best fit in certain sheet metal ductwork. Consisting of two major components, the heating elements and the electric terminal within the boxed framework, duct heaters can be bottom mounted, flange mounted, round collar mounted or slip-in and are easily installed in existing or new HVAC filter systems, with the heater control panel mounted in any convenient location.

The two types of heating elements used in duct heaters are open coil and tubular (standard and finned), each offering certain advantages. Open coil elements are coils of nickel chrome wire that are very popular due to excellent heat dissipation; however, tubular elements are more suited to demanding environments as they are sheathed with protective covers of metals such as aluminum, iron, stainless steel or steel. Because of their sheathes, tubular elements are slower to respond but can hold up to humid and dusty atmospheres, and fins are used to help more quickly distribute the heat. Sheathed elements, especially finned varieties, offer a very long life with less maintenance and lower risk of fire and electric shock. Choosing the right heating element, electrical components and controls is essential to achieving the highest economy and efficiency from a duct heater. Temperature sensing duct heaters can be encoded to regulate electric heat output based on a desired temperature, and modulating controllers can allow successful duct heater operation in even extremely low air flow. Plus, electronic enclosures act as moisture/debris resistant and explosion proof housings.

Duct Heaters
Duct Heaters
Duct Heaters - Thermal Devices
Duct Heaters - Thermal Devices






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