Eberspacher Airtronic AS3 D2L Diesel Air Heater Kit, 12Volt, Single Outlet

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Product Description

Eberspacher Airtronic AS3 D2L Diesel Air Heater Kit, 12Volt, Single Outlet with EasyStart Pro Controller, 3 Year Warranty. The Eberspacher Airtronic 3 is a third-generation diesel air heater for commercial and consumer applications that can be installed in boats, trucks, agricultural and contracting equipment, and recreational vehicles.

Eberspächer has completely revolutionised this product family to provide a unique combination of high heating performance and compact design. The Airtronic 3 features quiet operation, automatic altitude adjustment up to 5,500 m and flexible installation options, making it the ideal choice for any vehicle.

The Eberspächer EasyStart Pro and EasyStart Web control units offer convenient and user-friendly operation of this Airtronic diesel heater. Compatible with all other control units, the Airtronic 3 is the perfect choice for those who want a heating system that is easy to use and operate.

Boasting a new combustion chamber concept, a new casing design, and many other features and enhancements from previous generations, the Airtronic 3 offers customers the latest and greatest in diesel air heating technology.

The ideal choice for anyone looking for a high-performance, compact, and quiet diesel air heater, try the Eberspacher Airtronic 3 today and see for yourself why it is one of the best diesel heaters on the market.

Diesel Heater Kit includes

  • 1 x Air Tronic D2L AS3 Diesel Heater & mounting plate
  • 1 x Fuel metering pump including pump holder
  • 1 x 6 meters of fuel line
  • 1 x Easystart Pro Controller
  • 1 x wiring harness (plug & play) & 6m twin core power supply cable.
  • 1 x 2 meters stainless exhaust & exhaust silencer
  • 1 x 0.5 meter air intake tube
  • 2 x 60mm vent flange & flat vent cover
  • 1 x 2 meters 60mm ducting
  • 1 x miscellany, screws & washers,clamps,p-clips,zip ties, fuel line joiners, warranty card including, QR code for digital manual.


  • Fully electronic microprocessor control
  • Continuous monitoring
  • Power stage to cut heating times
  • Smooth automatic room temperature control with a temperature pre-set facility
  • Low fuel and power consumption, suitable for longer periods of operation
  • More comfort thanks to wide control range and quiet night-time operation
  • Diagnostic system
  • Brushless motor results in a long service life of 5,000 h
  • Optimised burner operation with integrated altitude sensor: Automatic altitude adjustment up to 3,000m and optimised combustion.
  • EasyStart Pro controller operating system enables up to two heater units to be controlled from a central point
  • Starting capability from – 46 °C
  • Stepless heating performance control
  • Acoustically improved metering pump


  • High heating power, yet compact design
  • Automatic altitude adjustment up to 5,500 m*
  • Flexible installation with 90° tilt possible to either
  • side
  • New S3 gasoline heater for camping vehicles
  • Stepless heating performance control ensures quiet
  • operation

Additional Features

  • Patented housing design for improved plagiarism protection
  • Lifetime of up to 5,000 operating hours due to brushless motor
  • Backward compatibility through carry-over connections
  • Sensor-controlled, optimized start-up sequences through measurement of environmental parameters
  • Optimized heat air flow due to improved heat
  • exchanger
  • Maximum control with EasyStart Pro and EasyStart Web
  • Compatibility with all other control units
  • Diagnostics and parameter assignment via EasyScan
  • Can also be integrated into on-board systems via CAN
  • (12/24V), LIN (12V), S+(12/24V) interfaces

Its brushless motor means it offers a long service life of over 5,000 hours. That makes the second-generation Airtronic an even more reliable heating system for recreation vehicle trips.

The Airtronic ensures a pleasant, relaxing ambience. It warms the vehicle's interior to just the right levels of comfort and has now been made even quieter thanks to its infinitely variable heat output. The new metering pump has also been noise-optimised, so the air heater now has a quieter operation, which means better sleep.

This RV heater is supported by the Eberspacher EasyStart Pro, the intelligent control unit that makes controlling the heater remotely simple and convenient. For instance, the desired start time and heating duration can be pre-set with the timer function.


SKU 29.2113.00.0019

Brand Eberspacher

Warranty Period: 3 Years

Product Category RV Heaters and Hot Water

Model AS3 D2L

Product Type Diesel Heater

Fuel Diesel – standard commercially available (EN 590)

Heating Capacity (W) 2.2kW

Height (mm) 122

Included 1 x Air Tronic D2L AS3 Diesel Heater & mounting plate, 1 x Fuel metering pump including pump holder, 1 x 6 meters of fuel line, 1 x Easystart Pro Cont

Voltage 12V

Net Weight (kg) 2.5

Remote control Yes

Width (mm) 115

Fuel Consumption Max. 0.27 L/h | Min. 0.1 L/h

Heat Flow Max. 2200 Watts | Min. 850 Watts

Depth (mm) 310


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Customer Reviews

Excellent product Review by
Great quiet product, toasty warm now.
(Posted on 23 June 2021)
An excellent heater for our caravan. We had had th Review by
The unit was very easy to install with everything supplied including easy to follow instructions. The pump runs very quiet as compared to the cheaper one out there.
(Posted on 16 June 2021)
Good experience Review by
Whilst I have only just installed the heater. I have it easy to operate and it works well.The installation kit and instructions were good.
(Posted on 22 June 2020)
Good experience Review by
Whilst I have only just installed the heater. I have it easy to operate and it works well. The installation kit and instructions were good.
(Posted on 22 June 2020)

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Product Q&A

Ask Us a Question
  • How does the size of the area to be heated affect which diesel heater to purchase?

    A larger area might require a twin outlet or a more powerful heater.

    • A 2kW diesel heater will be sufficient for a vehicle around 4-6 metres
    • If the layout affect the heat flow or the area is a bit larger, a twin outlet is recommended
    • With a large motorhome or fifth wheeler, it is best to opt for a 4kW diesel heater
  • Should I buy a gas or diesel heater?

    It depends on your personal requirements. Please see the pros and cons of both below:


    • Pros
      • Most caravans already have gas appliances so adding a gas heater is relatively straightforward
      • Purchase cost is lower than a diesel heater
      • Noise is lower than diesel heater
    • Cons
      • A number of regulatory requirements apply for installation: a gas heater flue cannot be installed too close  a window, door or other gas appliance inlet or outlet, or under an enclosed annex A licensed gas fitter is required to connect the gas heater and provide a compliance certificate
      • In temperatures of two degrees and under, the heater won’t function
      • Produces a wet heat resulting in unwanted humidity and condensation


    • Pros
      • You don’t need a licence for installation
      • Superior heating performance compared to a gas heater
      • Produces a clean dry heat as opposed to the wet heat produced by a gas heater
    • Cons
      • More expensive to buy than a gas heater
      • Generally noisier than a gas heater
      • You need a clear space below the heater for the exhaust
      • Extra diesel tank needed
  • Does the diesel heater come with a fuel tank?

    No, a fuel tank is not included with the purchase of a diesel heater. You will need to add a fuel tank to your order. However, if the vehicle runs on diesel, you will be able to plumb into the vehicle's fuel tank.

  • Can I use biodiesel or kerosene to fuel the diesel heater?

    No, it is recommended that you only use high grade diesel, and not biodiesel or kerosene.

  • Can I install my diesel heater under the bed?

    Yes, you can. Just note that there will be some noise due to the intake of the heater as well as a ticking sound from the fuel pump. Therefore, it is probably best to install the heater away from the bedroom.

  • What is the difference between the rotary and digital controllers for diesel heaters?
    • Rotary controllers do not have a thermostat and consist of a dial that is based on feel and you will need to turn it up or down until you are satisfied with the temperature. The heat will remain constant once set to a specific dial position.
    • Digital controllers have a thermostat and you are able to digitally select a temperature. These controllers also have a timer that can be set if you only want to run the heater for a certain amount of time.
      • It is recommended the digital controller be installed at waist height as a result of heat rising. It will reach its temperature too soon if installed too high or will have to work too hard if the thermostat is too low.


For details relating to this product's warranty CLICK HERE


    For details relating to our delivery process CLICK HERE

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