48V EcoFlow and Eberspacher Airtronic S3 set

Included in the kit:

Off-grid Van and RV Heating with 48V Power for All-Season Travel

Stay warmer and more self-sufficient on the road with a bundled 48V RV power system and Espar Airtronic S3 heater setup built for off-grid comfort. This package combines EcoFlow 5kVA 48V power with your choice of one, two, or three 5kWh LFP batteries and a 12V Espar gasoline or diesel heater kit for dependable cabin heat and everyday electrical support.

Benefits & Use Cases

This bundle is designed for van, RV, and overland builds that need both reliable cabin heat and a more integrated off-grid electrical setup. It suits customers who want one configurable package for cold-weather comfort, battery storage, charging, and cleaner installation planning.

The Espar Airtronic S3 side delivers compact, efficient air heating for smaller cabins and camper interiors, while the EcoFlow 48V platform helps simplify power distribution, charging, and energy management in mobile builds. The result is a practical package for weekend trips, full-time van life, service vehicles, and custom camper conversions.

• Combined heating and off-grid power package for RV, van, and expedition builds
• Choice of diesel or gasoline Espar heater kits to match vehicle fuel type
• 30A or 50A RV power kit options for different electrical layouts
• Modular battery expansion with one, two, or three 5kWh LFP batteries
• Compact Airtronic S3 heater format for efficient cabin heating in tight installs

Vehicle Compatibility

• Mercedes-Benz Sprinter camper and conversion builds using the diesel Sprinter heater kit
• Ford Transit camper and conversion builds using the gasoline Transit heater kit
• Universal van, RV, and overland builds using the B2L gasoline or D2L diesel universal heater kit
• Small motorhomes, truck cabs, compact expedition vehicles, and other mobile builds needing off-grid heating and onboard power

Technical Specifications

• Bundle Type: EcoFlow 48V power system with Espar Airtronic S3 air heater kit
• Fuel Type: Diesel or Gasoline, depending on selected heater kit
• System Voltage: 48V power system + 12V heater kit
• Power System Output: 5 kVA
• Battery Options: 1 x 5kWh LFP battery, 2 x 5kWh LFP batteries, or 3 x 5kWh LFP batteries
• Heater Output: B2L gasoline 6,800 BTU (2.0 kW) or D2L diesel 7,500 BTU (2.2 kW)
• Fuel Consumption: D2L diesel 0.03–0.07 gal/h (0.1–0.27 L/h); B2L gasoline
• Power Consumption: D2L diesel 4–27 W; B2L gasoline
• Max Altitude: up to 13,120 ft (4,000 m)
• Dimensions (Heater body only): 310 × 115 × 122 mm (12.2 × 4.5 × 4.8 in)
• Part Numbers: D2L heater body PN 252953050000; B2L heater body PN 202029050000; Universal S3 installation kit PN 252029800000; vehicle-specific adapter part numbers
• RV Kit Versions: 30A RV kit with Power Kit Console or 50A RV kit with Power Kit Console
• Heater kit warranty: 2 Years
• Ecoflow power kit warranty: 5 Years

Kit Includes

• 30A RV kit:
• 30A AC/DC Smart Distribution Panel (Gen 1)
• 5 kVA Power Hub (Gen 2)
• Power Kit Console (Gen 1)
• Cable Pack*

• 50A RV kit:
• 5 kVA Power Hub (Gen 2)
• 30A/50A AC/DC Smart Distribution Panel (Gen 2);
• Power Kit Console (Gen 1)
• Battery Mounting Hardware/Straps
• Cable Pack*

• Batteries:
• 1, 2 or 3 x 5 kWh LFP Battery;
• Battery Mounting Hardware/Straps

• *Cable Pack:
• 5 kVA Power Hub AC Charge Cable (4.5m/14.9ft);
• 5 kVA Power Hub Alternator Charge Cable (6m/19.8ft);
• 5 kVA Power Hub DC Main Out Cable (4.5m/14.9ft) 3AWG;
• 5 kVA Power Hub AC Main Out Cable (4.5m/14.9ft) 6AWG;
• 2 x 5 kVA Power Hub Solar Charge Cable (6m/19.8f);
• 2 x T568B Communication Cables;
• Installation/Mounting Hardware.

• Universal heater kit:
• Espar Airtronic S3 B2L or D2L 12v Heater
• EasyStart Pro Controller Timer
• Exhaust pipe with clamps ~3,2ft (~1m)
• Universal installation kit* 

• Sprinter heater kit:
• Espar Airtronic S3 D2L 12v Heater
• EasyStart Pro Controller Timer
• Exhaust pipe with clamps ~6.6ft (~2m)
• Universal installation kit*
• Specific Mercedes Benz Sprinter Adapter for aux tap

• Transit heater kit:
• Espar Airtronic S3 D2L 12v Heater
• EasyStart Pro Controller Timer
• Exhaust pipe with clamps ~6.6ft (~2m)
• Universal installation kit*
• Specific Ford Transit Adapter for aux tap

• Universal installation kit*
• Fuel pump (12v)
• Fuel hose
• Floor mounting plate
• Pro controller extension 9.8 ft (3m)
• Exhaust Silencer / Muffler
• Electrical harnesses - Plug n' Play
• Combustion intake pipe ~3.3 ft (1 m)
• Flexible ducting (60 mm. diameter) - 1.64 ft (0.5 m)
• Inlet grills
• Adjustable 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

FAQs

Who is this bundle best for?
It is a strong fit for camper vans, RVs, Sprinter and Transit builds, and off-grid travel setups that need both cabin heat and a more complete onboard electrical system.

Can I choose diesel or gasoline heating?
Yes. The bundle can be configured with a diesel D2L heater or a gasoline B2L heater, with vehicle-specific options for Sprinter and Ford Transit applications.

Is this a good setup for cold-weather van life?
Yes, it is aimed at travelers who want dependable cabin heat plus stored onboard power for off-grid stays, shoulder-season trips, and winter camping.

What should I know before installation?
Match the heater fuel type to the vehicle, confirm the correct RV panel version, and plan cable routing, battery placement, and heater ducting before starting the install.

Will the heater work at altitude?
The Airtronic S3 platform is designed for high-altitude use up to the listed range, making it a practical option for mountain travel and higher-elevation camping.