OWLHeizer OWL-1S Pro with porfessional connection kit

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Electric engine heater OWLHeizer OWL-1S Professional


  • 220/230 Volt - up to 80* ° C- Universal suitable for all engines and vehicles
  • Incl. Connection cable set for uncomplicated preheating,





Cables, plugs and sockets are not compatible with other manufacturers!



For assembly details, please visit our support page



After the heating coil has been heated to approx. 80 ° C, the device switches itself off independently,

Until the temperature has cooled to about 60 ° C.

The integrated pump runs continuously. This warm-up cycle is repeated continuously.


Practical experience:

Vehicle: Suzuki Jimny year 2013 with 1.3L petrol engine, 86PS 4,5L cooling liquid.

Initial situation: Temperature in closed garage 0 ° C. Vehicle stood 12h. Preheater 1 hour in operation.

Total operating time 1h. Heating operation 60min. Rest Time 0min.

Final temperature, warmest spot outside of the motor about 57 degrees. In the engine it is already warmer.

The cooling water temperature indicator is already raised when the ignition is switched on and warm air from the interior heating system already comes.

Within 0.75Km (30km / h zone, no slope, 3rd gear, ventilation to warm) full operating temperature.

Conclusion: The engine starts at about 57 ° C even warmer than in summer, the heating can be used directly, the operating temperature is reached quickly.



The engine and cooling water temperature is influenced by factors such as the Abstellort of the vehicle and the size of the cooling circuit during preheating.

We specify the internal switching temperature of the respective preheater in our offers, no cooling water or engine temperature.

Your engine can be only have 30-40°C


Technical specifications:

  • Voltage: 220-240 V 50 Hz
  • Power: max. 1100Watt to 230Volt
  • Pump Performance: max. 5 to 7 L / min.
  • Pump height: 60cm
  • Suitable for cooling water hoses of 16 to 20 mm internal diameter
  • Switching temperature of the preheater: approx. 60-80 ° C
  • Weight: 380 grams
  • Measurements: 110 x 60 x 60 mm
  • Length of the connection cable: approx. 140 cm armored with socket 3 * 1,5mm² (black) + 250cm rubber cable 3 * 1,5mm² (orange)
  • Short pumping distance between input and output 3.5 cm
  • The switching temperature can vary and depends on the cooling water circuit
  • Manufactured according to international safety standards
  • CE marking



  • Heater (switching temperature 80 ° C)
  • Connection cable approx. 1.4 meters armored with socket (black) +
  • Approx. 2.5 meters Rubber cable feed with Schuko plug (orange)
  • Hose clamps 2x
  • Fastening material for the socket
  • Mounting instructions in English

You can find more details about the product and its installation as well as further information on our support page


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Additional product information

Handbook Download

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