Reliable Diesel Heater for Sprinter Van Comfort
Stay warm faster with efficient, quiet cabin heat built for cold-weather Sprinter travel and overnight comfort. This 12V diesel heater delivers up to 13,600 BTU (4.0 kW) of stepless heat output and works with the EasyStart Pro controller for convenient temperature management.
Benefits & Use Cases
The Espar Airtronic M3 D4L is a strong fit for Mercedes-Benz Sprinter camper conversions, service vans, and other mobile builds that need dependable heat without heavy battery drain. Its compact heater body, stepless heat control, and automatic altitude adjustment make it well suited for off-grid travel, winter camping, and daily-use commercial vans.
- Fast, even cabin heat for cold mornings, overnight stops, and shoulder-season travel
- Stepless heating performance helps maintain comfort with quieter operation
- Automatic altitude adjustment supports travel in higher-elevation environments
- Compact 12V heater body works well in space-conscious Sprinter conversions
Technical
- Fuel Type: Diesel
- Voltage: 12V
- Max Output: 13,650 BTU (4.0 kW)
- Fuel Consumption: 0.03–0.135 gal/h (0.11–0.51 l/h)
- Power Consumption: 5–42 W; starting ≤100 W
- Max Altitude: 18,000 ft (5,500 m)
- Warranty: 2 years, extendable by 1 year
- Dimensions (Heater body only): 376 x 140 x 150 mm (14.8 x 5.5 x 5.9 in)
- Part Numbers: Heater body PN 252955050000;
- Certifications: ECE R122 (heating) & ECE R10 (EMC)
Vehicle Compatibility
- Mercedes-Benz Sprinter camper van conversions
- Mercedes-Benz Sprinter cargo and work vans
- Other vans, motorhomes, and service vehicles using 12V diesel heating systems
- Applications that benefit from strong airflow and reliable cabin heat during extended use
Kit Includes
- Espar AM3 D4L Diesel 12V heater
- EasyStart Pro Controller
- Fuel pump (12v)
- Fuel hose
- Fuel T piece kit
- Exhaust Silencer / Muffler
- Electrical harnesses - Plug n' Play
- Combustion intake pipe ~3.3 ft (1 m)
- Flexible ducting (90 mm / 3.54 in diameter) - 1.64 ft (0.5 m)
- Inlet grills
- Adjustable air outlet grill (90 mm / 3.54 in diameter)
- Screws, clips and plastic straps required for installation
- Installation manual CD (Scan QR code for installation manual download)
- Warranty documentation
The kit additionally includes the following:
- Specific Mercedes Benz Sprinter Adapter for aux tap
- Pro controller extension 9.8 ft (3m)
- Floor mounting plate
- Stainless steel exhaust system - approx. 6.6 ft (2m)
FAQs
Is this a good diesel heater for a Sprinter van?
Yes. This kit is built around the Airtronic M3 D4L 12V platform and suits Sprinter camper and work-van builds that need dependable cabin heat with efficient fuel use.
Can I control the heater easily from inside the van?
Yes. The EasyStart Pro controller gives you convenient control over heating functions, making it easier to manage comfort during daily use and overnight stays
How does this heater perform at altitude?
The Airtronic 3 platform supports automatic altitude adjustment, which helps maintain more reliable operation during mountain travel and higher-elevation camping.
Is this kit suitable for long duct runs in a van build?
Yes. The M3 D4L platform is designed for strong heat output, and careful duct routing helps improve airflow, efficiency, and long-term reliability.
Can a DIY installer fit this heater kit?
Many van builders install diesel heaters themselves, especially when using a vehicle-specific kit. Proper fuel routing, exhaust placement, and electrical connections are essential.
Technical Specifications of the Espar Airtronic M3 D4L Diesel 12V Sprinter Kit with EasyStart Pro Controller
- Fuel:
- Diesel
- Voltage:
- 12V
- Max. Heat Output:
- 13,650 BTU (4.0 kW)
- Max. Altitude:
- 18,000 ft (5,500 m)
- Heater model:
- Airtronic M3
Included in the kit:
Reliable Diesel Heater for Sprinter Van Comfort
Stay warm faster with efficient, quiet cabin heat built for cold-weather Sprinter travel and overnight comfort. This 12V diesel heater delivers up to 13,600 BTU (4.0 kW) of stepless heat output and works with the EasyStart Pro controller for convenient temperature management.
Benefits & Use Cases
The Espar Airtronic M3 D4L is a strong fit for Mercedes-Benz Sprinter camper conversions, service vans, and other mobile builds that need dependable heat without heavy battery drain. Its compact heater body, stepless heat control, and automatic altitude adjustment make it well suited for off-grid travel, winter camping, and daily-use commercial vans.
- Fast, even cabin heat for cold mornings, overnight stops, and shoulder-season travel
- Stepless heating performance helps maintain comfort with quieter operation
- Automatic altitude adjustment supports travel in higher-elevation environments
- Compact 12V heater body works well in space-conscious Sprinter conversions
Technical
- Fuel Type: Diesel
- Voltage: 12V
- Max Output: 13,650 BTU (4.0 kW)
- Fuel Consumption: 0.03–0.135 gal/h (0.11–0.51 l/h)
- Power Consumption: 5–42 W; starting ≤100 W
- Max Altitude: 18,000 ft (5,500 m)
- Warranty: 2 years, extendable by 1 year
- Dimensions (Heater body only): 376 x 140 x 150 mm (14.8 x 5.5 x 5.9 in)
- Part Numbers: Heater body PN 252955050000;
- Certifications: ECE R122 (heating) & ECE R10 (EMC)
Vehicle Compatibility
- Mercedes-Benz Sprinter camper van conversions
- Mercedes-Benz Sprinter cargo and work vans
- Other vans, motorhomes, and service vehicles using 12V diesel heating systems
- Applications that benefit from strong airflow and reliable cabin heat during extended use
Kit Includes
- Espar AM3 D4L Diesel 12V heater
- EasyStart Pro Controller
- Fuel pump (12v)
- Fuel hose
- Fuel T piece kit
- Exhaust Silencer / Muffler
- Electrical harnesses - Plug n' Play
- Combustion intake pipe ~3.3 ft (1 m)
- Flexible ducting (90 mm / 3.54 in diameter) - 1.64 ft (0.5 m)
- Inlet grills
- Adjustable air outlet grill (90 mm / 3.54 in diameter)
- Screws, clips and plastic straps required for installation
- Installation manual CD (Scan QR code for installation manual download)
- Warranty documentation
The kit additionally includes the following:
- Specific Mercedes Benz Sprinter Adapter for aux tap
- Pro controller extension 9.8 ft (3m)
- Floor mounting plate
- Stainless steel exhaust system - approx. 6.6 ft (2m)
FAQs
Is this a good diesel heater for a Sprinter van?
Yes. This kit is built around the Airtronic M3 D4L 12V platform and suits Sprinter camper and work-van builds that need dependable cabin heat with efficient fuel use.
Can I control the heater easily from inside the van?
Yes. The EasyStart Pro controller gives you convenient control over heating functions, making it easier to manage comfort during daily use and overnight stays
How does this heater perform at altitude?
The Airtronic 3 platform supports automatic altitude adjustment, which helps maintain more reliable operation during mountain travel and higher-elevation camping.
Is this kit suitable for long duct runs in a van build?
Yes. The M3 D4L platform is designed for strong heat output, and careful duct routing helps improve airflow, efficiency, and long-term reliability.
Can a DIY installer fit this heater kit?
Many van builders install diesel heaters themselves, especially when using a vehicle-specific kit. Proper fuel routing, exhaust placement, and electrical connections are essential.
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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