Espar Airtronic S3 B2L Gasoline 12V Ford Transit Kit with EasyStart Pro Controller

Complete gasoline heater kit for Ford Transit conversions - quiet, efficient 6,800 BTU heat

Enjoy fast, steady warmth without idling - ideal for Ford Transit builds and professional upfits. If you are installing a heater in a gasoline Ford Transit, this kit includes everything typically required for a correct, clean installation. This heater kit is commonly used in Ford Transit conversion projects. The Espar Airtronic S3 B2L delivers up to 6,800 BTU (2.0 kW) with low 11-26 W draw and an integrated altitude sensor for reliable performance on mountain routes.

Designed for Ford Transit Conversions

This kit is optimized for Ford Transit conversion projects where reliable, engine-off heating is required. It is well suited for camper van conversions, work van builds, and custom interior layouts where space, noise levels, and fuel efficiency matter.

• Popular choice for Ford Transit camper van conversions
• Supports custom interior layouts and insulated builds
• Low electrical draw for off-grid and auxiliary battery systems
• Low fuel consumption

Compact Size - Suitable for Under-Seat Installation

Thanks to its compact dimensions, the Airtronic S3 B2L heater is well suited for under-seat installation in Ford Transit vans. This makes it a popular choice for conversions where interior space is limited and a clean, factory-style install is desired.

• Commonly installed under front or passenger seats
• Ideal for camper van and work van conversions
• Helps preserve living and cargo space

Benefits & Use Cases

Built for gasoline-powered platforms, this compact heater keeps cabins comfortable on cold nights and during on-site downtime. The included EasyStart Pro controller makes temperature and timer settings simple from the driver’s seat or living space.

• Engine-off comfort - reduce idle time and fuel waste
• Quiet operation for restful sleep and better crew focus
• High-altitude capability up to 13,120 ft (4,000 m) with integrated altitude sensor
• Compact footprint for streamlined installs in tight spaces

Heater Suitability

• Cab and cargo area heating for gasoline-powered Ford Transit vans
• Ford Transit conversions, camper vans, and custom builds
• Work vans, mobile workshops, and fleet vehicles needing reliable engine-off heat

Technical Specifications

• Fuel type: Gasoline (Petrol)
• Voltage: 12V
• Heat output: 6,800 BTU (2.0 kW)
• Fuel consumption: 0.04-0.07 gal/h (0.14-0.26 L/h)
• Power draw: 11-26 W
• Max operating altitude: 13,120 ft (4,000 m) with integrated altitude sensor
• Heater body dimensions: 12.2 x 4.5 x 4.8 in (310 x 115 x 122 mm) - compact form factor suitable for under-seat installations
• Certifications/Ratings: EN 55025 class 5; IP5K4K (operating), IP5K6K/IP5K9K (not operating)
• Warranty: 2 years (extendable by 1 year)

Part numbers:

• Complete kit: 202820290200 + Ford Transit kit accessories 
• Heater only: 202029050000
• Alternative formats: 20.2820.29.0200; 20.2820.29.02.00; 20 2820 29 0200; 20 2820 29 02 00 

Safety & Reliability

• Designed for extended, engine-off heating with stable temperature regulation
• Integrated safety monitoring to help protect the heater during operation
• OEM documentation linked below for service, troubleshooting, and parts identification

Vehicle Compatibility

• Ford Transit (gasoline)
• Ford Transit conversions, camper vans, and custom builds
• RVs & small motorhomes
• Truck sleepers & long-haul fleets
• Construction, agricultural & industrial vehicles
• Utility & emergency service vehicles
• Electric & hybrid vehicles (auxiliary cabin heat)

Not suitable for diesel applications or marine use.

Kit Includes

• Espar Airtronic S3 B2L Gasoline heater unit (12V)
• Fuel pump (12V)
• Fuel hose
• EasyStart Pro controller
• Exhaust silencer / muffler
• Electrical harnesses - Plug n' Play
• Combustion intake pipe (1 meter / 3.3 ft)
• Flexible ducting (60 mm / 2.36 in diameter) - 0.5 meter (1.64 ft)
• Inlet/outlet grills - adjustable flat 45-degree grills
• Air outlet grill (60 mm / 2.36 in diameter)
• Screws, clips, and plastic straps required for installation
• Installation manual access (scan QR code for download)

Additionally included:

• Genuine Ford push-fit adapter for auxiliary tap
• Floor mounting plate
• EasyStart Pro controller extension - 3 meters (10 ft)
• Stainless steel exhaust pipe - approx. 2 meters (6.6 ft)

Genuine Eberspacher Product Guarantee

• 100% genuine Eberspacher (Espar) components
• Built for professional installs and long service life
• Manufacturer warranty included (see warranty terms above)
• OEM technical documentation linked for service and support

Browse Eberspächer/Espar Manuals & Technical Documentation

People Also Ask

Is this heater suitable for a Ford Transit camper van conversion?
Yes. The Airtronic S3 B2L is commonly installed in Ford Transit camper van and work van conversions thanks to its compact size, low power consumption, and reliable engine-off heating.

Can the Airtronic S3 B2L run overnight?
Yes. It is designed for extended, engine-off heating with low fuel and power consumption.

Do I need an altitude module for this heater?
No. The Airtronic S3 B2L includes an integrated altitude sensor up to 13,120 ft (4,000 m).

Is this kit compatible with diesel Ford Transit models?
No. This kit is gasoline-only. Diesel applications require an Airtronic D-series heater.

Is this heater suitable for marine use?
No. This kit is intended for vehicle installations and is not specified for marine environments.