Cool Top Trail

For pleasant temperatures in camping vehicles

The Cool Top Trail rooftop air-conditioning systems from Webasto are ideal for parked motorhomes, caravans and campervans up to 10 m in length. Depending on vehicle size and destination, there are several different models to choose from with cooling capacities between 2.0 and 3.6 kW. Their generously dimensioned heat exchangers enable high efficiency and strong performance. Tested in Australian summers with temperatures of up to 50 °C, the models impress with reliable cooling. The systems have a heat pump function as standard which also works in cold outside temperatures of down to -5 °C and provides heat in the vehicle interior.


New! Cool Top Trail 20G, 24G and 28G are now equipped with a new environmentally friendly refrigerant gas R32 with very low GWP value of only 675. In addition, the weight of Cool Top Trail 20G and 24G has been reduced by 0.5 kg.

Benefits of Cool Top Trail

Cooling and heating

The high-performance systems cover an operating temperature range of -5 to 50 °C and always reliably ensure pleasant temperatures and low humidity.

Easy to install

The systems can often be installed in an existing skylight cut-out of 400 x 400 mm or 360 x 360 mm. Frames, screws and operating instructions are included in the scope of delivery. A CI bus interface is available.


The appliances are very quiet in operation. A sleep function ensures that neither the night's rest nor the neighbors are disturbed.


The V-versions of the rooftop air-conditioning systems in particular consume very little power. Thanks to a variable-speed compressor, the air-conditioning systems do not generate any peak currents during the start-up phase. During operation, the power consumption automatically adjusts to the required heating or cooling capacity. Eco functions can be used to further reduce power consumption.

Robust and flat

The housing is made of UV-stabilized polypropylene and is robust, yet light and flat.

Simple operation

All functions can be conveniently controlled by remote control from the dining area, seat or bed.

What our customers say

“I have equipped my campervan with the new Cool Top Trail 28V and I am using it for my trainings, for my holidays and it is also my place to sleep when I go to the races.


The very powerful and silent system allows me to recover quickly after the races and also sleep well.“


Marcel Schrötter, Motorbike European Champion 

Product details

Product specifications


  • Cooling capacities from 2 to 3.6 kW
  • Heating capacities from 2 to 3.5 kW
  • Nominal voltage / frequency: 230 V / 50 Hz
  • Total weight from 30.3 to 48.5 kg
  • Dimensions:
    • Cool Top Trail 20G/24G:
      Dimensions of the outdoor unit (mm): 1,002 x 566 x 215
      Dimensions of the indoor unit (mm): 557 x 536 x 43
    • Cool Top Trail 28G/28V:
      Dimensions of the outdoor unit (mm): 855 x 657 x 215
      Dimensions of the indoor unit (mm): 575 x 556 x 49
    • Cool Top Trail 34/36V:
      Dimensions of the outdoor unit (mm): 1,122 x 850 x 223
      Dimensions of the indoor unit (mm): 575 x 556 x 49
    • Cool Top Trail 35:
      Dimensions of the outdoor unit (mm): 998 x 680 x 340
      Dimensions of the indoor unit (mm): 557 x 536 x 43

Model overview


  • Cool Top Trail 20G
  • Cool Top Trail 24G
  • Cool Top Trail 28G
  • Cool Top Trail 28V
  • Cool Top Trail 34
  • Cool Top Trail 35
  • Cool Top Trail 36V



Cool Top Trail - Datasheet

698 KB

Cool Top Trail - Flyer

1 MB

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