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Space air heating solutions: Air Top


Enjoy precise and constant temperatures inside your motorhome at any altitude and in any weather conditions. 

Webasto air heaters provide continuous heating power output via stepless modulation. The heater operates quietly while consuming minimal electrical power and fuel. Choose from an installation mounted outside, in the double-floor or inside the vehicle. 

The integrated altitude sensor constantly ensures an optimal combustion process in altitudes up to 2,200m – under lower air pressure and with a lower oxygen ratio. The Air Top Evo models feature an in-built air pressure sensor as standard whereas the Air Top 2000 STC model is offered with an optional altitude mode (in combination with the MultiControl).


Your advantages

  • Compact heaters with proven efficency
  • New and improved technology, e.g. with respect to service life and heat up time
  • Easy installation, underfloor or in the interior
  • Constant ambient temperature, continuous control
  • Automatic altitude function for all Evo models
  • Manual altitude function possible for Air Top 2000 STC
  • Low consumption, quiet operation
  • Intelligent Blower Control
  • Complete installation kits for fast retrofitting

Technical details

Air Top 2000 STC
Air Top Evo 40
Air Top Evo 55
Heat power (kW)
0.9 – 2.0
1.5 – 3.5 / 4.0*
1.5 – 5.0 / 5.5*
Fuel consumption (l/h)
0.12 - 0.24
0.18 - 0.43 / 0.49*
0.18 - 0.61 / 0.67*
Rated voltage (V)
Operating voltage range (V)
10 - 15
9 - 16
9 - 16
Rated power consumption (W)
13 - 30
15 - 40 / 55
15 - 95 / 130
Dimensions L x W x H (mm)
310 x 120 x 118
423 x 148 x 162
423 x 148 x 162
Weight (kg)
Air flow against 0.5mbar


132 / 136*
200 / 220*

*Boost power level for a maximum duration of 30 min.


How does an air heater work?


Installation example

Installation of a Webasto air heating system

Example Air Top Layouts


Important components for dealers: RV specific kits

RV specific kits have been developed to specifically match the unique needs and demands of the RV market. Using a RV kit guarantees fully satisfied RV customers:

  • Extra low noise applications (extra silent dosing pumps, vibration clacking brackets)
  • Exhaust and air intake silencers
  • External temperature sensor obligatory for RV applications
  • Quick and easy installation thanks to new organization of kits and included installation overviews

RV product configurator

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Marine product configurator

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product configurator to find the right
system for your mobile home.

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Recreational Vehicles brochure
Webasto RV brochure

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FAQ: Webasto heating solutions
Frequently asked questions heating solutions

Do you have questions on installing a heater for your motorhome or caravan? In the frequently asked question area you can find a lot of useful information all around your Webasto heating systems.