Finned Air Heaters

A range of flat tubular heaters used for heating air, gas liquids, oil and for heating of railway points.

Finned Heaters

The surface area of tubular heaters is enlarged by the fitting of finns to enable the heater to effiently heat air or gases. These heaters have a short lengh but a high power.

Channel air heaters for air-conditioning and drying apparatus are also available please see enclosed pdf with further information and technical details..

Max. temperature at tube sheath

  • 700° (at CrNi-steel)

Diameters (with RHK 8,5mm)

  • 20 and 28 mm

Distance between fins

  • 5 mm

Electrical air heater

T+H air heaters type HRR consist of tubular heaters or finned tubular heaters assembled into a sheet metal housing made of zinc plated steel or stainless steel. According to the requirements given by the specification the housings can be adapted to various applications as per the illustrations indicated beside. For most applications finned tubular heating ele ments are used as their increased surface area allows low surface temperatures on the heating elements thus providing a low watt density and a long lifetime with reduced housing dimensions.

By means of electrical interlock it has to be assured that the heater can only be operated when a fan has been activated. In order to prevent the air filter from overheating and to avoid a too high outlet temperature the air heaters can be equipped with a thermostat and/or a temperature limitor.

Standard executions

In general we manufacture air heaters confrom to your specifiactions. For duct air heaters with air outlet temperatures less than 80°C the following dimensions of H are favorable because of the then possible employment of standard RHR:

Preferred dimensions H: 250 mm, 320 mm, 400 mm, 500 mm, 630 mm and 800 mm

Possible configurations and specifiactions

  • Flange heaters HRF or HRF-AK
  • Cylindrical air heaters HRZ with the preferential diameters 100 mm, 125 mm, 150 mm, 200 mm, 250 mm and 300 mm
  • Heaters for higher air temperatures with set off terminal box (AK)
  • Protection Degree of the connection box up to IP64
  • Air space sealed by welding
  • Insulation resistance > 10 megaohms
  • Silicone-free execution
  • Operating voltages between 24V and 3 x 500 V
  • Specification of the circuit steps
  • Execution with thermocouple mounted at the RHR
  • Low temperatures at the

Spiral heater

Heater with exosed heating filament located onto ceramic former or mica strip with a sheet metal housing. For use only with upstream or downstream fan blowers.

For tumbler dryers and industrial hot-air blowers.

Operating voltages

  • up to 440 V

Max. loading

  • approx. 9 W/cm²

Max. temperature

  • approx. 600°C

Standard version

  • up to 3000 W

Outer dimensions

  • 360x50x90 mm, 160x54x100 mm, 235x50x85 mm

Product enquiry and further information

We would be delighted to offer free application advice, technical information on products, free quotations and delivery information.

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Product enquiry & further information