Eberspacher Airtronic AS3 D2L 12V Basic kit With EasyStart Pro controller
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Core Features & Benefits
Powerful and Quiet Diesel Air Heater for Your Vehicle
Stay comfortable in cold conditions with fast, quiet, and fuel-efficient heating. The Espar Airtronic S3 D2L 12V diesel air heater provides 2,900–7,500 BTU (0.85–2.2 kW) of dependable heat, while the EasyStart Pro controller gives you accurate and convenient temperature control.
Key Benefits & Applications
The Eberspacher / Espar D2L is designed for commercial operators, fleet vehicles, and custom builds that require reliable heating in challenging environments. With its compact construction, automatic altitude compensation, and smooth heat output modulation, it is well suited for year-round use on the road, at remote job sites, or in off-grid setups.
- Newest-generation Eberspacher D2L diesel heater
- Includes a 2-year North American warranty
- Provided by an authorized Eberspächer US dealer with no US import tariffs
- Optimized diesel combustion for excellent fuel efficiency
- Low-noise operation for comfortable overnight use
- Automatic altitude compensation up to 13,120 ft (4,000 m)
- Low power consumption for battery-based and off-grid electrical systems
- Compact dimensions for installation under seats or in limited spaces
- EasyStart Pro Controller for programmable operation and precise temperature adjustment
Vehicle Compatibility
Designed for diesel-powered vehicles and equipment requiring independent cabin heat:
- Van conversions and camper builds — efficient heating for all-season adventures
- RVs and motorhomes — quiet, reliable warmth for off-grid living
- Truck sleepers and long-haul fleets — stay warm without idling the engine
- Construction and agricultural equipment — maintain comfort during cold workdays
- Utility, service, and emergency vehicles — dependable diesel heat for field operations
- Off-highway and industrial machinery — compact installation with consistent performance
- Small diesel boats under ~22 ft (Marine installation kit required)
Not suitable for gasoline vehicles or electric-only platforms.
Technical Specifications
- Fuel: Diesel (HVO/GTL compatible)
- Voltage: 12V
- Output: 2,900–7,500 BTU (0.85–2.2 kW)
- Fuel consumption: 0.02–0.07 gal/h (0.10–0.27 L/h)
- Power draw: 6–27 W during operation
- Max altitude: ≈13,120 ft (4,000 m) automatic altitude adjustment
- Dimensions (heater body): 12.2 × 4.5 × 4.8 in (310 × 115 × 122 mm)
- Certifications/ratings: EN 55025 class 5; IP5K4K (operating), IP5K6K/IP5K9K (not operating)
- Warranty: 2 years (extendable by 1 year)
Part numbers:
- Complete kit: 202829530201
- Heater only: 252953050000
Kit Includes
- Espar Airtronic S3 D2L 12v Heater
- EasyStart Pro Controller
- Fuel pump (12v)
- Fuel hose
- Fuel pick-up tube - 600mm /
- Electrical harnesses - Plug n' Play
- Stainless steel exhaust system - approx. 6.6 ft (2m)
- Combustion intake pipe ~3.3 ft (1 m)
- Flexible ducting (60 mm. diameter) - 1.64 ft (0.5 m)
- Inlet grills
- Air outlet grill (60 mm. diameter)
- Screws, clips and plastic straps required for installation
- Installation manual CD (Scan QR code for installation manual download)
- Warranty documentation
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Eberspacher Airtronic AS3 D2L 12V Basic kit With EasyStart Pro controller
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