Optimal heating performance
Fuel Operated Heaters

Eberspächer Airtronic and Hydronic
Heating systems that keep their promises
Diesel operated pre-heaters provide engine-independent heating options for your drivers. This ensures ideal climate conditions in truck cabs, particularly during prescribed breaks when outside temperatures are freezing. Eberspächer is the expert partner at your side with a large range of fuel operated heaters, such as the Airtronic S3 Commercial/M air heater or the Hydronic S3 Commercial water heater.
Airtronic air heaters
Fast, quiet, with capacity to spare
Eberspächer Airtronic air heaters heat the air in the truck and distribute it through individually positioned air outlets. This is why the Airtronic is especially suitable for heating the driver’s cab quickly and efficiently. A constant interior temperature can be maintained for an extended period thanks to the low fuel and electricity consumption.
Power range: 2 to 8 kW

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The main benefits:
- High heating performance in a compact design
- Automatic altitude adjustment up to 5,500 m*
- Flexible installation angled 90° to both sides possible
- Stepless heating performance control for quiet operation
- Patented housing design helps to prevent counterfeits
- Lifespan of up to 5,000 operating hours thanks to the brushless motor
- Downward compatibility through the use of established interfaces
- Environmental parameter measurement for optimized, sensor-controlled start sequences
- Optimized heating air flow through enhanced convector
- Maximum control with EasyStart Pro and EasyStart Web
- Compatibility with all other control units
- Diagnostics and parameter assignment via EasyScan
- Additional integration into vehicle systems via CAN (12/24 V), LIN (12 V) and S+ (12/24 V) interfaces
* Depending on variant

Hydronic S3 water heaters
The efficient heat source for a clear view
The Hydronic S3 Commercial combines fast pre-heating with stable heating performance and low fuel consumption. It offers your drivers extra power for a clear view, because fast, effective pre-heating is a great help when it comes to de-icing the windows to get off to a prompt start.
Power range: the most compact water heater, with 4 kW and 5 kW heating performance

Please note that the integration of videos is implemented via the external video service YouTube. By clicking on the button, you agree that the external content is activated and personal data is also processed in the USA.
A level of data protection comparable to the EU cannot be guaranteed if US authorities access data of EU citizens. You can revoke your consent by leaving the accessed page. When you return to the page, you can decide again whether you wish to give your consent. You can find further information on data protection at Privacy / Legal Notice and in the privacy policy of YouTube/.
The main benefits:
- Heating performance: 1.3 kW to 5.0 kW
- Operating temperature range: –40 °C to +60 °C
- Windshield de-icing time: 20 to 30 minutes (depending on side temperatures and other parameters)
- Interfaces: CAN and S++
- Economy: service life 3,000 h
- Commercial: service life 5,000 h
- Compatibility with all new and many conventional control units
- NEW: 24-volt heater for commercial applications
- NEW: Power version with 5.6 kW heating performance
- Utilization of residual heat through heating circuit run-on control
- Stepless heating performance control
- Noise emissions optimized
Additional features:
- Economy: gasoline (also E10) and diesel (also B30)
- Commercial: diesel (also B30)
- Diagnostic display via EasyStart TP 7.1 control units, and via EasyStart CAN-based control units
- Economy: suitable for altitudes up to 1,500 m above sea level; altitude adjustment can be activated manually above 1,500 m with EasyStart Pro
- Commercial: automatic altitude adjustment up to 3,000 m above sea level
- ADR compatible with EasyStart Pro (with Commercial version)

ECHO cargo heater assembly
The advanced heating solution for temperature-sensitive cargo
The ECHO Cargo Heater Assembly delivers powerful, engine-independent heat to keep cargo at stable temperatures in every season. Its next-generation Ax3 heater ensures fast, even airflow throughout the cargo bay, while the upgraded brushless blower motor and long-life ignitor provide reliable, low-maintenance performance. Designed for today’s Class 4–7 trucks, the ECHO Assembly protects sensitive goods from frost damage, eliminates the need for engine heat, and reduces wear on the vehicle’s coolant system.
Performance range: supports 2 kW to 8 kW Airtronic heaters with universal mounting, dual-heater capability, and advanced controls for consistent temperature management — even at high altitudes.
Superior Performance, Unmatched Innovation
The ECHO Assembly has been completely reimagined to meet the demands of today’s truck classes (4–7) and their diverse applications. Here’s how we’ve raised the bar with 15 new and improved features:
- Next-Generation Heating: Featuring the Ax3 heater and a new FMP, the ECHO Kit 2.0 offers unmatched performance, reliability, and functional capability.
- Advanced Control System: The new EPRO Controller enhances communication, diagnostics, and overall ease of use.
- Simplified Diagnostics: The diagnostic lead now connects directly to the HMI box, streamlining maintenance and troubleshooting.
- Dual Heater Capability: Operate two heaters simultaneously, ideal for larger cargo areas or extreme weather conditions.
- Automatic Altitude Compensation
- All-Weather Electrical Enclosure: UL-approved, robust, and built to protect the HMI in any climate.
- Plug-and-Play Installation: The improved harness design reduces installation complexity.
- Durable Enclosures: A shared, rugged housing design between ECHO 6 and 8 increases structural reliability.
- Upgraded Power Converter: Enhanced performance ensures efficient power management.
- Battery Charging Versatility: Supports FLA, AGM, and LiFePO4 batteries with improved current control (specific to ECHO 8).
- DC-DC Power Conversion: Operates 24V heaters on 12V battery systems, providing flexibility in battery configurations (ECHO 8).
- Fresh Air Circulation: Added return air duct connections provide fresh air, essential for livestock or cargo that emits fumes or odors.
- Emergency Stop Feature: A safety mechanism located at the FMP wire allows for rapid heater shutdown if needed.
- Universal Heater Compatibility: Streamlined mounting footprint and wiring for 2KW to 8KW heaters.
- Preassembled Heater: Significant reduction in field installation time saves labor costs.
- Enhanced Packaging: Designed to protect the preassembled heater during transport and handling.
ECHO Assembly Kit Includes:
- Eberspaecher Ax3 Airtronic Heater
- New EPRO Controller
- Brushless Blower Motor
- 100,000 Cycle Ignitor
- Long-life Burner Chamber
- Powder-Coated Aluminum Enclosure
- Plug-and-Play Wiring Harness
- Dual Power Converter
- Battery Charger
- Emergency Stop Mechanism
- Fresh Air Ducting
- Preassembled Heater System
- Universal Mounting System
Why Choose the ECHO Assembly?
The ECHO Assembly isn’t just an upgrade—it’s a leap forward in cargo heating technology. Whether you’re retrofitting an existing vehicle or equipping a new fleet, this system delivers unparalleled efficiency, reliability, and ease of use.
From improved safety features like the emergency stop to innovations like dual heater operation and fresh air capability, the ECHO Assembly is built to adapt to your unique needs.

