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Core Features & Benefits
Stay comfortable in your van with 4kW / 13650 BTU heat output.
Reliably heat in extreme cold and high altitudes.
Effortlessly adjust temperature with built-in sensor and EasyStart Pro controller.
Low-noise blowers and brushless fans create a quiet and peaceful environment.
Stay Warm Anywhere with the Espar B4L Gasoline Heater Kit
Stay warm and cozy in your van or vehicle , even in extreme conditions, with the Espar B4L gasoline heater kit. Suitable for vans and high altitudes , this 12V heater offers simplicity and optimized heating control with minimal noise levels.
Features of Espar/Eberspacher Airtronic B4L M2 (Gasoline) Heater Kit
Powerful 4kW / 13650 BTU maximum heat output for the best heating performance.
Suitable for harsh conditions and high altitudes , operating in temperatures as low as -46°C / -50°F and at altitudes of up to 9,900 feet.
Integrated temperature sensor and EasyStart Pro controller for simple and accurate heating control.
A flexible ducting system with customizable outlets and lengths for flexible installation .
Experience Powerful Heating Control with the Espar Gasoline Heater Kit
Enjoy the flexibility and optimized heating control of the Espar B4L M2 12V Air Heater with Installation Kit. With an emphasis on comfort and performance, this powerful gasoline heater is suitable for all kinds of vehicles and offers reliable heating in even the harshest conditions.
Espar B4L Gasoline Heater Designed to Work in Extreme Conditions
Eberspacher/Espar gas heater is designed to operate in extreme conditions, ensuring your comfort even in the harshest environments . This heater can function at temperatures as low as -46°C / -50°F and at altitudes of up to 9,900 feet, making it a reliable heating solution for your van or vehicle.
Optimized Heating Control and Reduced Noise Levels
Controlling the Espar B4L 12V van heater is a breeze with its integrated temperature sensor and EasyStart Pro controller. The direct blower system enables precise heating control and maximizes efficiency, while the minimal noise level of just 55 dB(A) ensures a quiet and comfortable environment.
Flexible Installation and Extended Service Life
The Espar B4L gasoline heater offers flexibility in installation with its adaptable ducting system. With closeable outlets of 60mm, 75mm, or 90mm you can create the perfect heating configuration for your needs. Additionally, improved diagnostics and serviceability contribute to an extended service life for this exceptional heater.
Technical Specifications
Part Number (Heater): 20.1987.05.0000 / 201987050000 / 20 1987 05 0000 / 20 1987 05 00 00
Part Number (Installation kit): 25.2720.80.0000 / 252720800000 / 25 2720 80 0000 / 25 2720 80 00 00
Espar Airtronic M2 B4L Gasoline 12V Heater Kit with EasyStart Pro Controller
Don’t know yet, but I’m excited!
I have not installed my heater yet, but I will get to it sometime this year. Just can’t do it right now.
Posted by Joan Earl on 1st Feb 2024
ESPAR / EBERSPACHER AIRTRONIC B4L M2
On of the better purchases I have made for my Vanagon Westfalia! Toasty warm on cold nights. Highly recommended.
Posted by Todd Ritchie on 17th Nov 2020
Works great in Ford Transit
I installed the Airtronic B4L two weeks ago and we have been on two overnight trips and it is perfect! I turn it on or set it to run all night and it heats up fast and it is quiet. We didn't notice any loud clicking sounds from the pump and the air blower is smooth and creates a nice white noise for sleeping. Plenty of BTU power to heat the van.
Posted by Nate on 21st Oct 2020
Great heater, even at 9,000 ft!
This heater works great for a van like a Promaster. It has now kept us warm for many nights running for 8 hours or more at a time, even at elevations of 9,000 ft. I give the heater five stars.
However, it did take some time for heatso.com to get me the correct heater. They accidentally shipped the diesel model of this heater. After taking weeks to clear customs, I had to send the heater back so they could ship the correct one. Quite the problem when shipping international and resulted in about 6 weeks or more from when I placed the order, until I received the correct unit. I also swapped out mounting plates for the flat mounting plate, but have not received a refund for that difference.
Posted by Drew on 24th Feb 2020
Highly recommend
The install wasn't too difficult, the installation kit came with everything I needed (and more) and the heater is working well so far! The instructions aren't the best but if you stare at it long enough you'll figure it out haha..
Posted by Remington on 21st Dec 2019
ECU ECU ECU
This is the latest espar 14k btu petrol heater and the manufacturer had huge problems with the control units so I suggest you get a unit from later batches. I ordered this kit as soon as it was introduced so it had that shitty ECU - took some time to sort out but heatso were really helpful and I now have the new type ECU which seems to be working fine. Overall it is a good heater just make sure you get the latest model with latest ECU version!!! The merchant is fine - very friendly and helpful guys.
