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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 ST model is offered with an optional altitude switch.

Your advantages

  • Short heat-up times
  • Low noise operation
  • Stepless power modulation to maintain constant cabin temperature
  • Very compact heaters for easy and fast installation inside or under the vehicle
  • Available as a complete installation kit for quick and simple retrofitting
  • Automatic altitude adjustment (AAA) as standard feature in Evo range
  • Multimode operation including ECO and Boost functions

Technical details
Air Top 2000 ST
Air Top Evo 3900
Air Top Evo 5500
Heating power (kW)
0.9 – 2.0
1.5 – 3.5 (3.9*)
1.5 – 5.0 (5.5*)
Fuel
Diesel
Diesel
Diesel
Fuel consumption (l/h)
0.13 - 0.27
0.18 - 0.42 (0.47*)
0.18 - 0.60 (0.66*)
Rated voltage (V)
12
12
12
Operating voltage range (V)
10 - 15
9 - 16
9 - 16
Rated power consumption (W)
14 - 29
15 - 40 (55*)
15 - 95 (130*)
Dimensions L x W x H (mm)
311 x 120 x 121
423 x 148 x 162
423 x 148 x 162
Weight (kg)
2.6
5.9
5.9
Air flow (m3/h)

93
132 (136*)
200 (220*)
*Boost mode

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
Data sheet Air Top

For further information please download our Air Top data sheet.

Recreational Vehicles brochure
Webasto RV brochure

Download our Recreational Vehicles brochure!

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.