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Espar / Eberspacher Airtronic S2 D2L 12v (2.2kW) Heater Kit

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  • Espar / Eberspacher EasyStart Pro Timer 221000352200


The Espar D2L Heater Kit is the perfect combination of price, performance, and reliability. The S2 D2L is an all-weather heater that functions at altitudes up to 9900 ft in temperatures as low as -51°F.


The D2L is an all-weather heater that operates in temperatures as low as -51°F (-46°C).

Designed with comfort in mind, the D2L is easy to maintain and install.

Integrated altitude sensors allow for operation in altitudes up to 9900ft (3000m).

The brushless fan and an improved fuel pump piston provide quiet performance.

Save on maintenance, fuel, storage, and campground fees thanks to an efficient and lightweight design

The GoSun Camp 365 off-grid trailer unfolds in under 10 minutes into a 100 sq.ft. spacious camper.

A built-in water purifying system and power station to store solar energy let you stay on the road for longer.

This off-grid camper includes all the household appliances for comfortable living on the road.


The S2 D2L Heater Kit ticks all the boxes in terms of performance and price. The energy-efficient D2L heater provides 2.2kW / 7500 BTU maximum output.

This updated model comes with a brushless fan and an improved fuel pump piston, providing enhanced quietness and durability. Meanwhile, the upgraded combustion chamber makes the S2 D2L environmentally friendly.


Espar Airtronic D2L heaters are designed for maximum comfort in all weather conditions. Heat can be controlled more precisely with the heater's timer and thermostat.

This Espar diesel heater is perfect for traveling at high altitudes due to its automatic altitude adjustment for up to 9900 feet. The D2L is an all-weather heater that reliably functions at temperatures as low as -51°F.


Espar's D2L Heater Kit is an all-in-one kit that is compact and easy to install. It requires no extra installation equipment when connected to an existing fuel line.

Since all Espar diesel heaters are manufactured in Germany, getting parts and maintaining them is never an issue.

The EasyStart Pro controller's detailed on-screen diagnostics facilitate troubleshooting and help isolate any problems if they occur.


Easy to install due to the plug-and-play system and same-line fuel system.

Compact, yet powerful, the Airtronic D2L produces a heat output of 7,500BTU.

Brushless technology and an improved fuel pump piston, for enhanced quietness and durability.

Compatible with LIN, CAN, and S+ communication protocols for better customization.

Innovative design and super efficient solar-powered appliances.

Durable and lightweight all-aluminum frame is immune to mold or rust.

A complete electricity system, powered entirely by solar panels.

100 square feet of customizable open space to fit all your needs.


Fuel Type
Heat Output
2200W (7500BTU)
Fuel Consumption
0.02 - 0.1 gal/h (0.06 - 0.28 l/h)
Power Consumption
6 - 31W
Rated Voltage
External Dimensions
12.2 x 4.5 x 4.8in (310 x 115 x 122mm)


  • The Espar/Eberspacher Airtronic D2L 12v
  • Heater
  • Fuel pump (12v)
  • Fuel hose
  • Fuel T piece kit
  • Exhaust Silencer / Muffler
  • Electrical harnesses
  • Stainless steel exhaust pipe - 900mm
  • Combustion intake pipe 1 meter
  • Flexible ducting (60 mm. diameter) - 0.5 meter
  • Inlet / Outlet grills
  • Air outlet grill (60 mm. diameter)
  • Screws, clips and plastic straps required for installation
  • Installation manual CD
  • Warranty documentation


Installation, servicing and maintenance must be done in accordance with manufacturer’s guidelines. Failure to follow these guidelines will result in voiding your warranty. 

We provide free technical and installation support via email or phone to all of our customers who purchase a heater, heater kit or other products from Heatso. We take pride in our customer service and want to ensure that your heater system is properly installed. As a result, if you have any difficulties, please do not hesitate to contact us at [email protected].

If you require removing and/or refitting your item, please visit a local professional or authorised specialist, if you can not find one you can contact us and we will try to recommend a local partner to assist with the task. The cost of removing and/or refitting this item is not covered by the warranty.

Standard/Premium Warranty Terms for Espar/Eberspacher or Webasto Heaters & Heater kits

2 Years + optional 1 year extended Warranty available

If the item has failed within warrantable conditions:

  1. Please fill out the contact form on the “Contact us” page.
  2. A representative will contact you within 24 business hours to confirm the details and assist you further.
  3. If the product needs to be inspected by our service engineer, we will provide shipping labels for you to print and attach before handing over to our courier for collection.
  4. The shipping label will contain instructions for arranging pickup at your location or drop off at a nearby FedEx location. Follow these instructions to pass the package to FedEx.
    1. *The Label must be attached to the packages before leaving the package with FedEx.
    2. *You can also choose to drop off the item at a FedEx post office instead of requesting a courier collection.
    3. *If after inspection it appears that the item is not warrantable and the malfunction is caused by a non-warrantable condition, we will kindly ask you to cover shipping expenses at a discounted flat rate.
  5. On average, diagnostics of heaters and their parts takes 3 to 4 working days from the moment the item has reached our warehouse.
    1. *The diagnostics report is provided by a manufacturer approved authorised service centre.
  6. If during diagnostics it was concluded that the fault falls under non-warrantable conditions, our customer support will reach out to you and provide you with an estimated repair cost.
    1. *Please note that we strive to provide the lowest possible repair prices.
  7. Under normal circumstances it can take 3-7 working days after diagnostics to repair most minor malfunctions.
    1. *Please note that each case is unique and your repairs may take longer depending on the fault.


*Please note that all deadlines above are approximate and everything depends on the specific details of each case.

**If your item has been installed by a third party, please save all the documentation.This documentation can help find and fix the fault faster.

9 Reviews Hide Reviews Show Reviews

  • 4
    S2 D2L

    Posted by Hasan Sume on 3rd Jan 2021

    Install was daunting at first but ended up being fairly easy. Best resource for install is YouTube. Literature that comes with it was pretty much useless. A little spotty on performance to start but after four or five times it worked perfectly. Tested in Death Valley set at 68 F all night with minimal fuel consumption and battery drain.

  • 5
    Espar 2 d2l Heater

    Posted by Ron on 1st Oct 2020

    Tech support is outstanding. Quick and thorough. Excellent follow up.

  • 5
    trully amazed

    Posted by Bjorn Noll on 1st Sep 2020

    Great little runner. compared to my old unit this is much quieter, which is very noticeable since my van build was some time ago and my Mercedes T2 had d1l installed in the back. amazed how much quieter my sleep is with this airtronic

  • 5
    Fast Shipping - Great Product

    Posted by Mike on 15th Dec 2019

    Shipping was unbelievably fast. Shipped from UK to US in 2 days... For FREE! I was blown away. Box was a little beatup, but everything arrived intact. This is a great kit for Sprinter/Van conversion. It has basically everything you need and some extras. I did end up getting a 5/16 to 1/8 hose barb fitting and some heat shield for the fuel line locally but other than that this kit was complete. Thanks Heatso!

  • 4
    ESPAR AIRTRONIC S2 D2L 12V Heater Kit

    Posted by Carla Singleton on 11th Dec 2019

    The heater works great and we are very happy with the purchase. The only reason for four stars instead of five is that when the auto dealership was installing the heater they told us the fuel filter was not present. So between parts and labor it cost $100 to get a fuel filter installed.

  • 5
    5 stars

    Posted by A&J nomads on 4th Dec 2019

    I can't express enough how happy I am with going with this model, because you can't get anything better at this price IMHO. Installation is pretty straightforward if you have some DIY skills and this kit really had all the bits we needed for our installation (just make sure you get the mounting plate). Fast shipping and really helpful customer service. happy!!!

  • 5
    Best heater out there

    Posted by Allan Tone on 24th Nov 2019

    This is the heater we install in all our custom van builds. Dependable, quiet, and hot. Works at altitude too!!

  • 5

    Posted by BH on 14th Oct 2019

    I installed this myself on a 2018 Sprinter van and found it all to be pretty straightforward. Plenty of videos online to provide tips specific to the Sprinter. Paired with the easy start pro timer and works great. I didn't need to purchase anything else to make it all work.

  • 5

    Posted by Jörg Gerschau on 29th Mar 2019

    Much easier installation with all the plugs Such a quiet unit compared to older D2