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Duct heaters are designed to be inserted into an existing duct for heating air flowing through it. Duct heaters are very convenient in that they may be inserted into existing systems easily by removing a section of the duct, inserting the heater, and replacing the duct section. This type of heater is efficient in that only air flowing to a selected part of the system is heated because the various duct heaters may be separately energized. Duct heaters which include a set of heating elements and a control box are generally of two types. In one type the duct heater is provided with outstanding flanges which extend perpendicularly to the axis of the duct line. In order to emplace this unit in a duct line, the otherwise conventional connecting ducts must be modified to provide comparable outstanding flanges which are then connected by fasteners to the duct heater. The other type of duct heater is referred to generally as a "slip-in" heater and requires that the otherwise conventional duct line be provided with a side opening to receive the slip-in unit.

Listings on Electronic components : Electric heaters : Duct heaters

  • Bel Thermal Units, Inc.
    Specializes in duct heating products featuring load carrying manual reset for secondary protection, hinged and latched control box covers, durable low watt density coiled heating elements, heavy gauge galvanized control box and element wrappe, and stainless steel terminals. USA.

    http://www.belthermal.com
  • Heat Exchange and Transfer, Inc.
    Designs and manufactures thermal fluid heat transfer systems and electric process heaters, including hot oil systems, tempered water systems, secondary temperature control loops, thermal fluid vaporizers, circulation heaters, air duct heaters, storage tank heaters, temperature control panels, and hot oil system accessories. USA.

    http://www.heat-inc.com
  • Indeeco
    Designing and manufacturing electric heating equipment and controls, product line contains both standard and custom designs for heating air, gases and liquids, featured products include duct heater, explosion-proof heater, unit heater, cooling tower heaters, process air heaters, circulation heaters, comfort heaters, and heat transfer systems. USA.

    http://www.indeeco.com
  • Manufacturing Company, Inc.
    Electric heater product line includes open coil and fin tube duct heaters, unit heaters, cabinet heaters, baseboard heaters, wall heaters, ceiling heaters, architectural heaters and make-up air units. The brasch gas detector product line includes carbon monoxide (CO) detectors, nitrogen dioxide (NO2) detectors, oxygen (O2) detectors, carbon dioxide (CO2) detectors and refrigerant detectors. USA.

    http://www.braschmfg.com
  • Mestek Technology Inc.
    Manufacturer of built up systems using a separate air moving device that may be heating only or heating and air conditioning applications. Products include unit heaters, duct furnace, air turnover systems, direct fired make-up air heaters, and indirect fired space heaters. USA.

    http://www.sterlinghvac.com
  • NAO Inc.
    Designs and manufactures direct fired / duct air heaters, arresters, atomizers, biogas, liquid burner, portable waste burners, fire simulation systems, fire snuffing, thermal radiation monitors and controls, flares, incinerators, mixers, sprayers, thermal oxidizers, valves, and vapor control units. USA.

    http://www.nao.com
  • ThermTech, Inc.
    Designs, engineers and manufactures thermal and catalytic oxidizers, process heating systems, burner systems, waste heat recovery packages, wastewater evaporators, fixed bed carbon concentrators, and overall combustion & control systems. USA.

    http://www.thermtech.com
  • TPI Corporation
    Manufacturer of heating, ventilation, lighting, and controls, products include built-in electric heaters, duct heaters and VAV boxes, portable electric heaters, infrared heaters, process heat equipment, industrial fans, lighting products, thermostats and controls. USA.

    http://www.tpicorp.com
  • Tutco, Inc.
    Supplying heating elements and electric heater assemblies for various applications to the home appliance, air conditioning, and heating industries. Products include compressors, clothes dryers, duct heaters, heat pumps, window air conditioners, electric furnaces, and other devices. USA.

    http://www.tutco.com
  • Valad Electric Heating Corp.
    Manufactures convection heaters (range from 500 watts to 3000 watts and rely on room air currents to radiate heat), duct heaters, space heaters (forced air heaters for engine rooms, cargo areas, storage rooms, crane cabs, communication shelters, and heavy industrial applications), and hot plates. USA.

    http://www.valadelectric.com

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