Eberspacher / Espar

Espar / Eberspacher Airtronic B4L AM3 (Petrol) 12v (4kW) Heater Kit

2,131.91CHF
1,510.10CHF
(Save  621.81CHF )
Core Features & Benefits
  • Features & Benefits
  • Stay comfortable in extreme conditions, even at high altitudes and low temperatures.
  • Features & Benefits
  • Sensor and controller are integrated for easy control and temperature monitoring.
  • Features & Benefits
  • Enjoy the quieter performance and reduced noise levels.
  • Features & Benefits
  • Benefit from flexible installation options and a simplified plug-and-play installation process.
Select additional options (Optional):
Extended Warranty for Peace of Mind:
Warranty Information
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    on orders $499
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    Shop with an expert
  • Easy Returns
    14-day Returns

STAY WARM IN EXTREME CONDITIONS WITH THE ESPAR B4L GASOLINE HEATER KIT

Stay cozy in chilly temperatures with the Espar / Eberspacher Airtronic B4L AM3 12v Air Heater Kit. This powerful 4kW gasoline heater offers optimized heating control and flexibility, making it ideal for vans, trucks, campervans, and more.

With easy installation, reduced noise levels, and compatibility with various models, this Espar Gasoline Heater Kit is a popular choice for those seeking reliable and effective heating solutions.  

FEATURES OF EBERSPACHER AIRTRONIC B4L 12V VAN HEATER KIT

Powerful 4kW / 13650 BTU total heat output.

Designed for extreme conditions and high altitudes.

A built-in temperature sensor and an EasyStart Pro controller are included.

Integrated blower system for optimized heating control and reduced noise levels.

Powerful 4kW / 13650 BTU total heat output.

Designed for extreme conditions and high altitudes.

A built-in temperature sensor and an EasyStart Pro controller are included.

Integrated blower system for optimized heating control and reduced noise levels.

Motor home at rocky mountain national park.

MULTI-FUNCTIONAL AND OPTIMIZED HEATING CONTROL

Experience unmatched performance and precise heating control with the Espar B4L Gasoline Heater Kit. Designed to withstand extreme conditions, this heater ensures your comfort even in the harshest environments.

With its ability to operate at high altitudes of up to 18,000 feet (5.5 kilometers) and in temperatures as low as -46°C (-50°F), it is the ideal heating solution for any adventure.

ADVANCED FEATURES AND ENGINEERING

The Espar B4L Gasoline Heater boasts a range of unique features that set it apart from the competition. With a maximum heat output of 4kW (13,650 BTU), it delivers powerful and consistent heating to your vehicle.

Its high-tech design allows it to operate flawlessly in extreme conditions and high altitudes, thanks to the integrated altitude sensor. Unlike previous models, no additional wiring or installation is required for high-altitude use.

SIMPLIFIED OPERATION AND REDUCED NOISE LEVELS

Using the Espar B4L Gasoline Heater is a breeze, thanks to its integrated temperature sensor and EasyStart Pro controller. With these user-friendly features, you can easily monitor and adjust the heating settings to maintain your desired level of comfort.

Additionally, the B4L's blower system ensures precise temperature control while minimizing noise levels. Say goodbye to the clicking noise of traditional heaters.

FLEXIBLE INSTALLATION OPTIONS

The Espar B4L Gasoline Heater offers a great deal of flexibility when it comes to installation. Its adaptable ducting system, which can reach up to 15 meters (49 feet) in length, provides customizable options according to your vehicle's layout.

Choose between 90mm or 75mm outlets and adjust the degree grilles and outlet types to match your preferences. The number of outlets can be varied based on the complexity of your ducting system, providing optimal heat distribution throughout your vehicle.

espar heater installation example

EASY SETUP AND FUEL SYSTEM INTEGRATION

Installing the Espar B4L Gasoline Heater is now easier than ever with its easy-to-use design. Say goodbye to complicated installations. This user-friendly kit requires fewer tools and enables DIY installation, which saves you time and effort.

The heater's fuel system conveniently connects to your vehicle's fuel system or tank, either through a standpipe or an auxiliary tap (if available).

ENHANCED COMPATIBILITY AND EXTENDED OPERATING HOURS

The Espar B4L Gasoline Heater is compliant with all three communication protocol technologies used by Espar: CAN, LIN, and S+. This means you can use your earlier generation controller without any issues with the B4L model.

Additionally, the B4L features a brushless fan, which significantly increases the heater's operating life from 3,000 hours (on previous models) to an impressive 5,000 hours. Enjoy peace of mind knowing that your heater is built to last and provide reliable warmth throughout your trips.

AUTOPLY PRE-CUT INSULATION KIT YOUR VAN

Improve your heater’s efficiency and stay warm for longer with AutoPly woven fabric insulation!

  • Espar Airtronic AM3 B4L 12v Heater
  • EasyStart Pro controller
  • Fuel pump (12v)
  • Fuel hose
  • Exhaust Silencer
  • Electrical harnesses
  • Stainless steel exhaust pipe
  • Combustion intake pipe
  • Flexible ducting
  • Inlet / Outlet grills
  • Air outlet
  • Screws, clips and plastic straps required for installation
  • Installation manual
  • Warranty documentation

Technical Specifications of the Espar / Eberspacher Airtronic B4L AM3 (Petrol) 12v (4kW) Heater Kit

Part Number (Heater):
20.2030.05.0000 / 20.2030.05.0000 / 20 2030 05 0000 / 20 2030 05 00 00
Part Number (Installation kit):
25.2720.80.0000 / 252720800000 / 25 2720 80 0000 / 25 2720 80 00 00
Fuel:
Gasoline
Voltage:
12V
Heat output:
1.3 – 4.0 kW (4435 - 13650 BTU)
Fuel consumption:
0.17 - 0.55 l/h (0.04 - 0.14 gal/h)
Average Power consumption:
4 – 38W
Average Power Consumption while Starting:
≤100W
Dimensions (L x W x H):
14.8 x 5.5 x 5.9 in (376 x 140 x 150 mm)
Heater model:
Airtronic D4 / B4
Power output:
4kW

Included in the kit:

STAY WARM IN EXTREME CONDITIONS WITH THE ESPAR B4L GASOLINE HEATER KIT

Stay cozy in chilly temperatures with the Espar / Eberspacher Airtronic B4L AM3 12v Air Heater Kit. This powerful 4kW gasoline heater offers optimized heating control and flexibility, making it ideal for vans, trucks, campervans, and more.

With easy installation, reduced noise levels, and compatibility with various models, this Espar Gasoline Heater Kit is a popular choice for those seeking reliable and effective heating solutions.  

FEATURES OF EBERSPACHER AIRTRONIC B4L 12V VAN HEATER KIT

Powerful 4kW / 13650 BTU total heat output.

Designed for extreme conditions and high altitudes.

A built-in temperature sensor and an EasyStart Pro controller are included.

Integrated blower system for optimized heating control and reduced noise levels.

Powerful 4kW / 13650 BTU total heat output.

Designed for extreme conditions and high altitudes.

A built-in temperature sensor and an EasyStart Pro controller are included.

Integrated blower system for optimized heating control and reduced noise levels.

Motor home at rocky mountain national park.

MULTI-FUNCTIONAL AND OPTIMIZED HEATING CONTROL

Experience unmatched performance and precise heating control with the Espar B4L Gasoline Heater Kit. Designed to withstand extreme conditions, this heater ensures your comfort even in the harshest environments.

With its ability to operate at high altitudes of up to 18,000 feet (5.5 kilometers) and in temperatures as low as -46°C (-50°F), it is the ideal heating solution for any adventure.

ADVANCED FEATURES AND ENGINEERING

The Espar B4L Gasoline Heater boasts a range of unique features that set it apart from the competition. With a maximum heat output of 4kW (13,650 BTU), it delivers powerful and consistent heating to your vehicle.

Its high-tech design allows it to operate flawlessly in extreme conditions and high altitudes, thanks to the integrated altitude sensor. Unlike previous models, no additional wiring or installation is required for high-altitude use.

SIMPLIFIED OPERATION AND REDUCED NOISE LEVELS

Using the Espar B4L Gasoline Heater is a breeze, thanks to its integrated temperature sensor and EasyStart Pro controller. With these user-friendly features, you can easily monitor and adjust the heating settings to maintain your desired level of comfort.

Additionally, the B4L's blower system ensures precise temperature control while minimizing noise levels. Say goodbye to the clicking noise of traditional heaters.

FLEXIBLE INSTALLATION OPTIONS

The Espar B4L Gasoline Heater offers a great deal of flexibility when it comes to installation. Its adaptable ducting system, which can reach up to 15 meters (49 feet) in length, provides customizable options according to your vehicle's layout.

Choose between 90mm or 75mm outlets and adjust the degree grilles and outlet types to match your preferences. The number of outlets can be varied based on the complexity of your ducting system, providing optimal heat distribution throughout your vehicle.

espar heater installation example

EASY SETUP AND FUEL SYSTEM INTEGRATION

Installing the Espar B4L Gasoline Heater is now easier than ever with its easy-to-use design. Say goodbye to complicated installations. This user-friendly kit requires fewer tools and enables DIY installation, which saves you time and effort.

The heater's fuel system conveniently connects to your vehicle's fuel system or tank, either through a standpipe or an auxiliary tap (if available).

ENHANCED COMPATIBILITY AND EXTENDED OPERATING HOURS

The Espar B4L Gasoline Heater is compliant with all three communication protocol technologies used by Espar: CAN, LIN, and S+. This means you can use your earlier generation controller without any issues with the B4L model.

Additionally, the B4L features a brushless fan, which significantly increases the heater's operating life from 3,000 hours (on previous models) to an impressive 5,000 hours. Enjoy peace of mind knowing that your heater is built to last and provide reliable warmth throughout your trips.

AUTOPLY PRE-CUT INSULATION KIT YOUR VAN

Improve your heater’s efficiency and stay warm for longer with AutoPly woven fabric insulation!

  • Espar Airtronic AM3 B4L 12v Heater
  • EasyStart Pro controller
  • Fuel pump (12v)
  • Fuel hose
  • Exhaust Silencer
  • Electrical harnesses
  • Stainless steel exhaust pipe
  • Combustion intake pipe
  • Flexible ducting
  • Inlet / Outlet grills
  • Air outlet
  • Screws, clips and plastic straps required for installation
  • Installation manual
  • Warranty documentation

Choosing Guide

Option Choosing Guide for this product is coming soon, please contact support@heatso.com if you need help picking the right options or have any questions.

Shipping

  • United States - 1-5 Working Days
  • United Kingdom - 2-5 Working Days
  • European Union - 2-7 Working Days
  • Australia / New Zealand - 5-14 Working Days
  • Rest of World - 5-14 Working Days

Returns

You can return or exchange goods within 14 days from the date of purchase if the item is unused and brand new in unopened packaging. You must contact us before returning any goods, though.

View full shipping & returns information

Warranty Information

Most heaters come with 2 year warranty + optional 1 year extended Warranty available

  • Parts - 1 Year Warranty
  • Refrigerators - 1 Year Warranty
  • AC Systems - 1 Year Warranty
  • Heavy duty heating equipment (10 kW+) - 1 Year Warranty
  • Other items - 1 Year Warranty

Installation, servicing and maintenance must be done in accordance with manufacturers 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.

If you require removing and/or refitting your item, please visit a local professional or authorized 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.

View full warranty Information

Customer reviews

(1 review) 5 out of 5 Write a Review
  • Upgrade

    Posted by Andrew Fouche on 8th Aug 2023

    5

    Upgraded Airtronic B4 with this, I believe latest generation burner, so managed to skip one generation haha. Way easier installation with all pre-wired plugs. Took way less time to install this, but probably due to experience with the first one and all the holes already drilled. Otherwise really happy, it is truly quieter now. Satisfied with the purchase.

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