Webasto Diesel Heaters


Webasto Diesel Heaters Repair Service & Installation Agent –

Roof Rack City offers full service and installation of Webasto Diesel Heaters including:

Airtop – Air heaters
Thermo Top – Water Heaters ( or combination air heater)
Dual Top – Combination Air and Water heaters

Webasto Diesel Heater Authorised Service Centre

All diesel heaters will require servicing at some point in their life. Roof Rack City has Webasto trained staff that are able to diagnose, service and repair the full range of Webasto Diesel Heaters. We are equipped with the latest Webasto Thermo Test (WTT) diagnostic software to provide real time diagnostic information for Webasto heaters.

Any diesel heater that shows signs of exhaust smoke or has issues starting will generally require a burner replacement. We stock burners for the most popular Webasto diesel heaters and can generally have non-stock parts within a few days.

Most heaters can be serviced within 2 working days and our servicing includes full diagnostic check and minimum 1 hour bench run with diagnostic report.

We specialise in caravan diesel heaters, camper trailer diesel heaters and RV diesel heaters.

We also service Eberspacher diesel air heaters.

Webasto Heater Authorised Installation Agent

Roof Rack City offers full service and installation of Webasto Diesel Air and Water Heaters including Airtop, Thermotop and Dual Top Heaters.

While the installation of a diesel heater is relatively straightforward in most caravans, our Webasto trained technicians ensure that your heater installation is to the highest standard and trouble free.  Webasto offer a 2 year warranty on all their products and we back that up with a minimum 5 year warranty on installation.

Our AIRTOP air heater installations generally include “boxing the heater in” to protect the heater from damage and to keep other items protected from the heater.

All installations include training in the correct operation of the heater and lifetime technical support.

DIY Diesel Heater Kits

Our DIY Diesel Air Heater kits are suitable for the home installer.  We provide detailed instructions and go through all the items in the kit at the time of purchase explaining each step of the process. Our tips and tricks as well as preparation of some of the components make our kits simpler to install.

Every heater kit includes unlimited backup technical support throughout the installation process. We also offer a final inspection of self-installed heaters purchased from us at our workshop at no extra cost.

We also offer partial install options for self installers who only wish to do certain parts of the installation.

Spare Parts

Roof Rack City carries a range of spare parts for Webasto diesel air heaters including diesel heater ducting and a range of branches, adapters and outlets. We also carry certain service parts for Eberspacher AIRTRONIC D2/D4 Heaters. Please call for more info.


AIR TOP – Space air heating solutions

Enjoy precise and constant temperatures inside your motorhome or caravan 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. The Air Top is generally best located in a low cupboard or under a box bed or seat 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 2000STC generally suits caravans up to approximately 25 feet and the EVO 40 and EVO 55 are for larger volume or multi-room motorhomes.

Webasto’s range of air heaters provide:

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

The Air Top 2000STC, the most popular air heater in small to medium sized caravans (generally up to 25′), uses a simple rotary dial thermostat control (shown below) which starts, controls the temperature and shuts the heater down. The optional Digital Controller gives the user the ability to control start up and shutdown via timers. The digital controller is a low profile surface mount and can be more suitable in certain installations.


THERMO TOP – Water heating solutions

The Thermo Top is a version of the popular Webasto parking heater adapted to the specific needs of caravan, motorhome and camper trailer enthusiasts.

The system heats up a water glycol mix in a buffer tank and uses this hot glycol to heat water through a plate heat exchanger. A second heat exchanger fitted with a two-speed fan can be added to direct warm air directly to the interior of the vehicle. This way the cabin is automatically heated up and the entire vehicle interior can be used.

The heater is operated using the digital timer (shown below) with one button startup and shutdown of the heater or integrated timer shutdown.


Dual Top – Combination Air and Water Heaters

he Dual Top Evo is an integrated air and water heating system that provides cabin heating and hot water in all seasons. The efficiently working system is specially designed to be installed inside or in some cases, outside the vehicle for more storage space and personal comfort inside. Please call for more information regarding installation applications and options for this heater.

Questions or advice?

Do you have questions on installing or servicing a heater for your motorhome or caravan?

Roof Rack City can provide advice regarding installation, repair and servicing of Webasto heating systems.

To view the Webasto website click HERE.