Espar Airtronic S3 B2L Gasoline 12V RAM ProMaster kit with EasyStart Pro Controller
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Core Features & Benefits
Quiet, Gasoline 12V Heat for RAM ProMaster Van Builds
Warm your ProMaster quickly and sleep comfortably with low power draw and clean, dry heat. The Airtronic S3 B2L produces 6,800 BTU (2.0 kW) and pairs with the EasyStart Pro for simple, reliable control all year round.
Benefits & Use Cases
This gasoline 12V heater is purpose-built for ProMaster conversions and small RVs where space is tight and battery life matters. Enjoy fast warm-ups, steady overnight comfort, and quiet operation without idling.
- Efficient cabin heating on gasoline builds — no diesel tank required
- Low electrical draw (6–26 W) protects your house batteries off-grid
- Automatic altitude capability up to 13,120 ft (4,000 m) for mountain trips
- Compact body for flexible placement in van conversions and campers
Technical
- Fuel: Gasoline
- Voltage: 12V
- Max Heat Output: 6,800 BTU (2.0 kW)
- Fuel Consumption: 0.03–0.07 gal/h (0.14–0.26 l/h)
- Power Consumption: 6–26 W
- Max Altitude: 13,120 ft (4,000 m)
- Warranty: 2 years
- Dimensions (heater body): 12.2 × 4.5 × 4.8 in (310 × 115 × 122 mm)
- Certifications: ECE R122 (heating) & ECE R10 (EMC)
Vehicle Compatibility
- RAM ProMaster (adapter for aux fuel tap included)
- Van conversions & camper builds — weekenders or full-time travel
- RVs & small motorhomes — quiet, efficient off-grid heat
- Truck sleepers & long-haul fleets — warm cabins without idling
- Construction, agricultural & industrial vehicles — cab heat during downtime
- Utility & emergency service vehicles — dependable heat on duty
- Electric & hybrid vehicles — efficient auxiliary heating solution
Not suitable for diesel applications or marine use.
Kit Includes
- AS3 B2L 12V Gasoline Heater
- EasyStart Pro Controller
- Fuel pump (12v)
- Fuel hose
- Exhaust Silencer / Muffler
- Electrical harnesses - Plug n' Play
- Combustion intake pipe 1 meter
- Flexible ducting (60 mm. diameter) - 0.5 meter / 1.64 ft
- Inlet / Outlet grills - Adjustable FLAT, 45 degree 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)
The kit additionally includes the following:
- Specific RAM ProMaster Adapter for aux tap
- Pro controller extension 9.8 ft (3m)
- Floor mounting plate
- Stainless steel exhaust system - approx. 6.6 ft (2m)
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Espar Airtronic S3 B2L Gasoline 12V RAM ProMaster kit with EasyStart Pro Controller
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