Espar / Eberspächer Airtronic L3 D6L 24V RV Diesel Heater – Comfort Installation Kit

High-Power, Quiet & Efficient Heating for Large Motorhomes, Trucks and Expedition Vehicles

The Eberspächer Airtronic L3 D6L (24V) is a next-generation diesel air heater engineered for large motorhomes, expedition trucks, commercial service vehicles, marine cabins, and off-grid installations operating on a 24-volt electrical system.
With an impressive 6 kW heating capacity, it delivers fast, powerful, and consistent warmth even in extreme winter conditions—making it ideal for large and demanding environments.

The S3 generation introduces enhanced efficiency, quieter operation, a long-life brushless motor, and advanced electronic controls, ensuring maximum reliability and comfort.

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Key Features

• Heating Output: Up to 6 kW — ideal for medium to large interior spaces

• 24V system compatibility — perfect for trucks, expedition vehicles, and large motorhome platforms

• Next-generation brushless blower motor for extended service life (approx. 5,000 hours)

• Fuel-efficient, low-emission diesel combustion technology

• Optimized airflow design for quieter, smoother operation

• Automatic altitude compensation for reliable performance at high elevations

• Rugged, vibration-resistant, and moisture-protected construction

• Precise temperature regulation with advanced electronic controls

• Ideal for heavy trucks, overland vehicles, marine cabins, and off-grid installations

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Airtronic AL3 D6L Heater – Complete Package Contents

• 1 × Airtronic L3 D6L Heater Unit
  OEM Code: 252960

• 1 × Digital Control Switch
  OEM Code: 25.1000.35.2200.0C

• 1 × 90 mm Warm Air Duct (50 cm)
  OEM Code: Not specified

• 1 × Front Heater Cover
  OEM Code: Not specified

• 1 × Electrical Wiring Harness
  OEM Code: 25.2720.80.1100.0A

• 1 × Fuel Hose (8 meters)
  OEM Code: Not specified

• 1 × Air Intake Pipe (100 cm)
  OEM Code: Not specified

• 2 × Exhaust Pipes (90 cm + 30 cm)
  OEM Code: Not specified

• 1 × Exhaust Silencer
  OEM Code: Not specified

• 1 × Air Outlet Vent
  OEM Code: 22.1000.01.0056.0A

• 1 × Fuse Kit
  OEM Code: 22.9000.30.2720.0A

• 1 × Fuel Pump Holder
  OEM Code: 22.1000.50.0300.0D

• 15 × Plastic Clamps
  OEM Code: 22.9000.09.0165.0A

• 1 × Automatic Mounting Bracket / Parts
  OEM Code: 22.9000.09.0163.0A

• 1 × Mounting Hardware Set (screws & clamps)
  OEM Code: Not specified

• 1 × Air Intake Grille
  OEM Code: Not specified

• 1 × 90 mm Hose Clamp
  OEM Code: Not specified

• 1 × Fuel Metering Pump (DP, 1–4 kW)
  OEM Code: 22455203

Mounting Box
OEM Code: 25.2720.80.0000.0B

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Typical Applications

• Expedition and overland trucks

• Large motorhomes and RVs with 24V electrical systems

• Commercial service vehicles and mobile workshops

• Off-grid cabins, tiny homes, and remote shelters

• Marine cabins, small boats, and yachts

• Heavy-duty vehicles requiring high-capacity heating