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Espar Airtronic S2 D2L 12v 7500BTU Heater Kit with Pro controller

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Espar Airtronic S2 D2L 12v 7500BTU Heater Kit with Pro controller

The Espar D2L Heater Kit with Pro Controller ticks all the boxes when it comes to performance and price. For a start, it’s fuel efficient and powerful.  The Espar D2L heater provides 2.2kW / 7500 BTU maximum output, and with its EasyStart Pro controller which adjusts the heater automatically according to altitude, it can even function at high altitudes of up to 9900 feet (3 kilometres)  But what really makes this Espar diesel air heater special is the engineering - its  brushless fan provides extra comfort. Meanwhile, its improved fuel pump reduces clicking noise, which means it can be fitted anywhere without having to worry about having your rest or sleep interrupted. Not only that, with the addition of an Espar 600mm standpipe, it can be easily transformed into the ideal diesel bunk heater. And for increased performance and convenience, this 2nd gen Espar diesel heater is equipped with an integrated temperature and altitude sensor. This is also an all weather heater, and it can even operate in temperatures as low as -51°F (-46°C).

But that’s not all, as all Espar diesel heaters are manufactured in Germany, getting parts and maintenance is never a headache. The Espar D2L Heater Kit with Pro Controller is not only ideal for regular or converted campers or food vans, this diesel air heater is also perfect for maritime usage, and can be easily integrated into yachts, sailboats and narrowboats using a marine kit.

Transforms easily into the perfect diesel bunk heater.

The Espar D2L Heater Kit with Pro Controller can be easily transformed into an Espar bunk heater with the simple addition of an Espar 600mm standpipe kit. If you are a driver looking to install an economical and high performance diesel bunk heater, look no further than this Espar diesel heater kit. Simply purchase the additional 600mm standpipe pack and with a little adjustment, you’ll have the perfect bunk heater. All you need to do is cut and bend the standpipe to the length required for a separate fuel connection from the fuel tank, and then install directly to the fuel tank.

Key features of the Espar D2L Heater Kit with Pro Controller: 

  • All in one kit. Requires no extra installation equipment when being connected to an existing fuel line.
  • Can be easily transformed into a diesel bunk heater when used with an Espar 600mm standpipe.
  • Improved combustion operation means it is environmentally friendly 
  • Same line fuel system installation 
  • Brushless fan provides 5k hours of heating, 2k hour increase on earlier models. 
  • Quieter performance, and longer heater life due to brushless fan. 
  • Stepless blower system adjusts fan speed according to set temperature and actual vehicle temperature for maximized efficiency and increased comfort levels.
  • Reduced CLICKING sound with Improved fuel pump piston.
  • Integrated altitude sensors means no extra wiring and installation required for operation in altitudes up to 9900 feet.
  • More accurate on-screen fault diagnostics with new controller communication system.
  • Less tools and no cable crimping with easy to install plug and play system.
  • Same dimensions as the Espar Airtronic D2 Diesel Heater Kit.
  • EasyStart Pro controller provides automatic temperature control with integrated temperature sensor 
  • Utilises the same 3-communication protocols technology as other Espar diesel heaters ( CAN, LIN and S+), making it easy to update to newer models. 
  • Easy S+ signal connection gives users an on/off switch capability. 
  • Shares accessories with previous models
  • Available in 12V and 24V 
  • Air ventilation mode available on all Airtronic S2 D2L models

User benefits of the Espar Airtronic D2L diesel heater kit with Pro Controller 

The Espar Airtronic D2L diesel heater kit comes in 12V and 24V options and gives you fantastic performance and features at a price point that won’t break the bank. Compact in size and simple to install,the Espar D2L heater is perfect for a wide variety of vehicles, and even marine operations (NB: Marine kit is required). And you needn’t be worried if you are not a professional mechanic, this plug and play kit has been created so that installation is easy and hassle free. Not only that, you’ll find everything you need for installation in the kit. And talking of performance, there’s much to admire about this Espar diesel heater. This updated model comes with brushless technology, providing enhanced quietness and durability. These improvements mean that it now delivers 5K hours of heating, which is a massive 2k improvement on the previous model. And that is not all. With its improved fuel pump piston, annoying clicking has almost become a thing of the past. This means it is now perfect for almost any place in your vehicle. And for truck drivers, with the addition of a 600mm standpipe kit, this heater can be easily transformed into a durable and efficient diesel bunk heater. 

The heater comes with a timer for convenience and thermostatic functions that help you to more precisely regulate heat. You can use the unit’s internal temperature sensor to control  temperature, or add an external temperature controller for extra control. And you never need to worry about trying to figure out any issues that might arise, as the heater’s detailed on screen diagnostics will help you to isolate any problems if they occur. 

This Espar diesel heater is also perfect for travelling at high altitudes as it comes with automatic altitude adjustment that allows it to be used at altitudes of up to 9900 feet. 

You can also benefit from a number of installation options: you can utilize either 60mm or 75mm outlet ducting and even choose to mount the heater externally with the separate Airtronic D2L external mounting box.  

What the Espar Airtronic S2 D2L Heater Kit with Pro Controller is suitable for:

  • Trucks / Lorry / Semi-truck / 
  • Van / Van conversion
  • Mercedes / Freightliner / Dodge Sprinter
  • Fiat Ducato / Ram Promaster
  • Ford Transit
  • Nissan NV
  • VW Crafter
  • Campervan
  • Caravan
  • Construction machinery,
  • Agricultural machinery
  • Mining machinery
  • Military / Army / Defense 
  • People carrying/ Passenger vehicles
  • Railway machinery / Trains
  • Bus / Coach / School bus
  • Emergency vehicles
  • Horse Box
  • Mobile Workshop
  • Boat (requires marine kit)

Heatso’s engineers are here to help

The Espar Airtronic D2L is an excellent heating option for your vehicle. But if you have any questions about it, or would like to hear about other options, our customer service is onhand to help. And when you do find the ideal solution to meet your needs, our engineers are available to talk you through the whole installation process, step by step.

Technical data:

 Fuel   Diesel – EN 590
 Heat Flow Control Unit  Maximum   Minimum  Off
 Heat Flow Watt 2200 850 -
  BTU 7500 2900 -
 Fuel Consumption l / h 0.28 0.06 -
  gal/ h 0.1 0.02 -
 Average Power consumption Watt 31 6 4
 Average Power Consumption while Starting Watt ≤100
 Rate Voltage   12 volt or 24volt
 Dimensions LxWxH mm 310x115x122

Eberspacher / Espar Part Number:  

  • 252721050000
  • 25.2721.05.0000
  • 25 2721 05 0000
  • 25.2721.05.00.00
  • 25 2721 05 00 00

Installation kit 252720800000 Contents: 

  • Fuel pump (12v)
  • Fuel hose
  • Fuel T piece kit
  • EasyStart Pro Controller 
  • 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



Warranty Included

2 Reviews Hide Reviews Show Reviews

  • 5

    Posted by Fred on 2nd Nov 2020

    This is the best heater controller combo on the market.

  • 5
    got it for my Sprinter

    Posted by Thomas on 2nd Dec 2019

    Fast shipping, good tech support and the heater itself is very compact and efficient - really love it!!!