Eberspacher / Espar Airtronic S3 B2L Gasoline 12V Ford Transit Conversion Heater Kit with EasyStart Pro
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
Part Numbers & Cross References
- Heater model: Espar / Eberspacher Airtronic S3 B2L (also referenced as Airtronic AS3 B2L)
- Fuel type: Gasoline (Petrol)
- Voltage: 12V
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)
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
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.
Manuals
Technical Specifications of the Espar Airtronic S3 B2L Gasoline 12V Ford Transit Kit with EasyStart Pro Controller
- Fuel:
- Gasoline
- Voltage:
- 12V
- Max. Heat Output:
- 6,800 BTU (2 kW)
- Fuel consumption:
- 0.03 - 0.07 gal/h (0.14 – 0.26 l/h)
- Power consumption:
- 6 - 26W
- External Dimentions:
- 12.2 x 4.5 x 4.8 in (310 x 115 x 122mm)
- Heater model:
- Airtronic S3
- Max. Altitude:
- 13,120 ft (4,000 m)
Included in the kit:
Eberspacher / Espar Airtronic S3 B2L Gasoline 12V Ford Transit Conversion Heater Kit with EasyStart Pro
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
Part Numbers & Cross References
- Heater model: Espar / Eberspacher Airtronic S3 B2L (also referenced as Airtronic AS3 B2L)
- Fuel type: Gasoline (Petrol)
- Voltage: 12V
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)
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
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.
Manuals
Choosing Guide
Option Choosing Guide for this product is coming soon, please contact [email protected] if you need help picking the right options or have any questions.
Shipping
- United States - 1-5 Working Days
- United Kingdom - 2-5 Working Days
- European Union - 2-7 Working Days
- Australia / New Zealand - 5-14 Working Days
- Rest of World - 5-14 Working Days
There may be a delay if the order is shipped to a PO or parcel shop address. Please note, some couriers do not offer shipping to PO boxes.
View full shipping & Delivery information
Returns
You can return or exchange goods within 14 days from the date of purchase if the item is unused and brand new in unopened packaging. You must contact us before returning any goods, though. Additional deductions might be applied as indicated in the Returns section of our Terms and Conditions.
Warranty Information
Most heaters come with 2 year warranty + optional 1 year extended Warranty available
- Parts - 1 Year Warranty
- Refrigerators - 2 Year Warranty
- AC Systems - 1 Year Warranty
- Heavy duty heating equipment (10 kW+) - 1 Year Warranty
- Other items - 1 Year Warranty
Installation, servicing and maintenance must be done in accordance with manufacturers guidelines. Failure to follow these guidelines will result in voiding your warranty.
We provide free technical and installation support via email or phone to all of our customers who purchase a heater, heater kit or other products from Heatso. We take pride in our customer service and want to ensure that your heater system is properly installed. As a result, if you have any difficulties, please do not hesitate to contact us.
If you require removing and/or refitting your item, please visit a local professional or authorized specialist, if you can not find one you can contact us and we will try to recommend a local partner to assist with the task. The cost of removing and/or refitting this item is not covered by the warranty.
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