
High Heating Power, Yet Compact Design
The new Airtronic D4L has impressive heating power that ensures rapid and efficient cabin and cargo heating, making it ideal for a variety of industry applications. The robust performance comes in a compact and space-efficient design, allowing it to fit easily into small areas without compromising on its heating capability. The new Airtronic D4L is versatile choice for users who require powerful high-capacity cabin and cargo heating solutions.
Flexible Installation with 90° Tilt to Either Side
The design of the Espar Airtronic D4L units allows for flexible installation options to fit a variety of spatial configurations and user preferences. With the ability to tilt the unit 90 degrees to either side, it can be positioned to direct heat exactly where it’s needed most. The heater can be mounted directly in the cab, on the floor or in the rear cargo panel of the vehicle without extensive modifications.

The Airtronic D4L functional expansions integrate with programmable timers, remote controllers, and vehicle diagnostics for improved climate control and energy management.
The Airtronic D4L automatically adjusts to altitude, ensuring efficient performance and heat output at heights up to 5500 meters, ideal for mountainous regions.
The Airtronic D4L offers backward compatibility, enabling easy upgrades without major modifications and related costs.

Extended Operational Lifespan
The Airtronic D4L has an impressive operational lifespan of up to 5,000 hours, thanks to its advanced brushless motor technology. This technology ensures reduced wear on the motor during frequent usage which also reduces maintenance frequency and replacement. It’s the perfect air heater for users who require consistent uptime and performance.
Advantages:
The Espar Airtronic D4L diesel air heater offers efficient heating for vehicles, featuring a durable motor, low-temperature starting, and compatibility with older Espar air heaters and controllers. Other benefits include:
- Stepless heating performance control ensures quiet operation
- Patented housing design for durable performance
- 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