CSN® air heater type 803

The industrial air heater type 803 is used to heat gaseous media. These welded heaters can be used at overpressures of up to 500 mbar.


The type 803 industrial air heaters are the ideal solution for heating gaseous media in various process and process engineering applications. Thanks to their robust welded design, they are ideal for use with overpressures of up to 500 mbar. Their precise design ensures uniform and effective heating, resulting in optimised operating performance.

Product advantages

  • Welded housing.
  • Replaceable, highly compressed tubular heating elements.
  • Precise temperature monitoring and control possible using electronic controls.
  • In contrast to combustion heaters, no combustion fumes or noise.
  • With integrated fan on request

Technical data



Process data

Medium and temperature (up to 650°C) according to specification

Process connection

Flange frame according to duct size

Flanges up to Ø1200 according to DIN 1092-1 or ASME B 16.5

Heating elements

Tubular heating elements


Painted steel; 1.4301 (AISI 304);

1.4404 (AISI 316L); 1.4571 (AISI 316 Ti);

1.4828 (AISI 309); 1.4876 (Incoloy 800);

2.4858 (Incoloy 825)

Duct cross-section (mm x mm)

(250 x 250) to (3000 x 3000)

Temperature monitoring

Temperature controller

Safety temperature limiter


PT100 or thermocouple


0.5 to 1500 kW


110 to 690 V

Protection class

IP54 to IP66

Terminal box

Powder-coated steel RAL 7035, stainless steel

Customised versions on request

The following certifications are available on request:

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Your request

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