Hand-held infrared burner for weed control ADLER Heater Flexi.
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Handheld infrared heater

for weed control

Thermal weed control methods can be used on practically all surfaces and always work according to the same principle. The application of thermal energy to the surface of the plants destroys the cell structure of the vegetative fibre.

The water which is transported from the root to the leaf cells evaporates and makes the plant dry up after a short time already. Furthermore, proteins are denatured whereby vital processes such as photosynthesis are being interrupted. As a result the damaged plant material dies. The ADLER Heaters use sophisticated infrared technology and offer a number of advantages compared to other methods.

ADLER Heater Flexi 350.
ADLER Heater Flexi 350 / 500 with hand burner.
Small & Solid.
Hand torch for hard-to-reach places.
ADLER Heater Flexi 350 / 500 with hand burner.
Inclination of the combustion chamber, ideal for edge processing.
Inclination of the combustion chamber, ideal for edge processing.
ADLER Heater Flexi.
When folded, our heater fits into almost any trunk.

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Broschüre ADLER Heater Flexi


  • Clear limitation of operating area
  • Plug and Play: Connect gas cylinder, light and get going
  • Flexible use in tight spaces (traffic islands, bus stops, etc.) thanks to single-axle design and swivel-mounted burner
  • Compact dimensions for ease of transport
  • Optional hand-held burner for difficult-to-access spots
  • Practically noiseless operation


Holistic weed control for paved areas, sidewalks, water-bound paths, cemetery maintenance. With the ADLER Infrared Heater you destroy weeds without toxins and environmentally friendly. No open flame! The devices are versatile and can be used on almost any surface up to the edge.


  • Hand-held burner for difficult-to-access spots

Technical specifications

Working width350500
Dimensions in operating position mmL 1.500 x B 352 x H 800 – 1.300L 1.500 x B 536 x H 800 – 1.300
Dimensions in transport position mmL 845 x B 352 x H 495L 869 x B 536 x H 610
Number of infrared emitters23
Weight (without gas cylinder) kg4051
Thermal output kW1319,5
Infrared emitter fuel11 kg- / 5 kg propane gas cylinder11 kg- / 5 kg propane gas cylinder
Capacity per gas cylinder h10 / 4,5ca. 7 / ca. 4,5
Working speed km/h1,0-1,51,0-1,5
Area performance m2/hup to 525up to 800

Note on gas installations

The gas systems of devices for thermal weed control must be checked regularly to ensure safe operation of the system.

The inspection of these systems must be carried out by a “person qualified to inspect” and is carried out in accordance with the requirements of the accident prevention regulation “Use of liquid gas” (DGUV 79)

The inspection interval for the ADLER Heater gas systems is 2 years.

ADLER Arbeitsmaschinen GmbH & Co. KG carries out the initial inspection in cooperation with Westfalen AG.

We also recommend Westfalen AG for the upcoming recurring inspections, as they have technicians and service partners working throughout Germany.

Westfalen AG
Industrieweg 43
48155 Münster
+49 251 695-539
Fax: +49 251 695-73539


Under the following link you will also find an online database of other inspectors for liquid gas systems (in German):


ADLER Heater Flexi 350 / 500

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