For all doors of climate chambers, rheumatism cells, deep freeze cells, deep freeze rooms and cold stores!

Features and benefits

  • For climate chambers and rheumatic cells
  • Use for deep freeze cells
  • Use for deep freeze chambers
  • Use in cold stores
  • From -50°C to +135°C (silicone-based design)

Do you have any questions or like to place an order?

General questions
07135/98 98 0 or

Question about our products


When is a door case-heater necessary?

A door case-heater prevents the freezing on of the door seal. So it allows to enter climate chambers, rheumatism cells, deep freeze cells, deep freeze rooms and cold stores unabstracted. As frame-heaters, silicone- and PTFE-isolated heating pipes are mainly used. So the Hemstedt-products cover a temperature from -100°C to +200°C (with PTFE-isolation) (above 0°C only permitted with a temperature-cutout = overheat control).


Available versions: 


Heating cable type HEM-SiSi, type NH2GM2G, protection class II

Heating cable type HEM-SiSi, Bauart NH2GM2G, protection class II

with temperature monitor item no. 44500

without  temperature monitor item no. 42500

Our products also run on fuel cell / hydrogen technology!
Made in Germany - since 1974
  • Underfloor heating is harmful to your health? Wrong!

    This prejudice is from the 1960ies and no longer correct.

    Quite the contrary!

    Here You get to know why!

  • Electric underfloor heating is expensive? Wrong!

    A comparison in terms of acquisition and consumption gives clarity.

  • Electric underfloor heating

    Pros and cons underfloor heating – Does it make sense?

  • Creative freedom and feel good architecture thanks to underfloor heating

    „Heat coming up from beneath as naturally as heat rises - there is no other ideal heat“ (Frank Lloyd Wright)

Specifications frame heater for deep-freeze rooms, Item no. 44500 / 42500

Heating cables HEM-SiSi, type NH2GM2G
Protection class II
Connection double sided, with 2 PVC-cold lead 2 x 0.75 mm²
Connection length 0.50m
Voltage 230 V, 50 Hz
Output in W/m 10, 15, 20, 25, 30 and 35 (The allowed load depends on the heat deduction condition)
With thermostat Item no. 44500: 16 mm
Without thermostat Item no. 42500: 0.50 - 20 m
Diameter 3.9 mm
Nominal limit temperature +135 °C
Note Different voltages, output and length are available on request. Extension of cold tail is possible for add. charge.

To top