Why Choose This Heater?
The Espar Airtronic S3 D2L is the latest generation of Espar’s trusted 2 kW diesel air heater. Designed specifically for van conversions and Sprinter builds, it offers whisper-quiet performance, improved efficiency, and a built-in altitude sensor for seamless operation in the mountains.
Performance Highlights
- Powerful Heat Output: 6,800 BTU warms up small-to-medium vans quickly.
- Fuel Efficiency: Consumes only 0.10–0.24 l/h, giving you a full night of warmth on minimal fuel.
- Altitude-Ready: Maintains consistent combustion up to 9,800 ft without additional kits.
- User-Friendly Control: EasyStart Pro controller lets you schedule, monitor, and fine-tune heating at the touch of a button.
Problem It Solves
No more idling your engine or waking up cold in your van. With the S3 D2L installed, you’ll enjoy dry, reliable heat all night long, whether parked in the Rockies, winter camping, or on long-haul trips.
Common Use Cases
- Mercedes Sprinter camper conversions
- Winter road trips & ski adventures
- Remote off-grid camping
- Overnight trucking stops
How It Works
The Airtronic S3 D2L pulls diesel directly from your van’s tank and powers on 12V. Warm air is distributed through ducting, controlled by the EasyStart Pro interface. Its altitude sensor automatically adjusts combustion for clean burning at high elevations.
Suitable For
- Vans & Camper Conversions (Sprinter, Transit, ProMaster)
- RVs & Motorhomes
- Trucks & Fleets
- Marine & Off-grid cabins
Technical Specifications
Spec |
Details |
|---|---|
| Fuel Type | Diesel |
| Voltage | 12V |
| Max Heat Output | 6,800 BTU (2.0 kW) |
| Fuel Consumption | 0.10–0.24 l/h |
| Power Consumption | 13–30 W |
| Max Altitude | 9,800 ft |
| Warranty | 2 Years |
Trust Points
- Genuine Espar product, designed for Sprinter vans
- 10,000+ satisfied customers worldwide
- Ships within 24 hours (US-based stock)
- Backed by expert tech support and Heatso guarantee
Social Proof
⭐️⭐️⭐️⭐️⭐️ 4.8/5 Average Rating
“Flawless heater for my Sprinter. Quiet, fuel efficient, and altitude-ready.” – Ryan T.
“Installed it in 3 hours, keeps my van warm all night at 8,000 ft.” – Sarah L.
Comparison Table
| Product | Fuel / Voltage | Heat Output | Max Altitude | Loved For | Price Tier | Avg Rating |
|---|---|---|---|---|---|---|
| Espar Airtronic S3 D2L (this model) | Diesel, 12V | 2.0 kW / 6,800 BTU | 9,800 ft | Sprinter-ready kit, altitude sensor | $$ | ⭐️⭐️⭐️⭐️⭐️ |
| Espar Airtronic S3 D4L | Diesel, 12V | 4.0 kW / 13,600 BTU | 9,800 ft | Larger vans, extreme cold | $$$ | ⭐️⭐️⭐️⭐️⭐️ |
| Webasto Air Top 2000 STC | Diesel, 12V | 2.0 kW / 6,800 BTU | 7,000 ft | Budget-friendly, compact installs | $ | ⭐️⭐️⭐️⭐️ |
? Compare all Espar heaters →
FAQs
Q: Can I install this myself?
Yes — this kit includes everything you need for a DIY Sprinter install. Most users finish in 3–4 hours with basic tools.
? Espar fuel system installation tips
Q: Will it work at high altitudes?
Yes. The S3 generation includes an integrated altitude sensor that automatically adjusts combustion up to 9,800 ft.
? Ultimate guide to diesel heaters for high-altitude RV travel
Q: Is this kit specific to Sprinters?
This bundle is optimized for Sprinter vans, but the heater itself can be installed in other vans or RVs with proper ducting.
? Diesel heater for Sprinter vans: Everything you need to know
Q: How much battery does it use overnight?
With its 13–30W draw, a healthy leisure battery can easily run it overnight without issue.
? Complete guide to your van electrical system
Included in the kit:
Why Choose This Heater?
The Espar Airtronic S3 D2L is the latest generation of Espar’s trusted 2 kW diesel air heater. Designed specifically for van conversions and Sprinter builds, it offers whisper-quiet performance, improved efficiency, and a built-in altitude sensor for seamless operation in the mountains.
Performance Highlights
- Powerful Heat Output: 6,800 BTU warms up small-to-medium vans quickly.
- Fuel Efficiency: Consumes only 0.10–0.24 l/h, giving you a full night of warmth on minimal fuel.
- Altitude-Ready: Maintains consistent combustion up to 9,800 ft without additional kits.
- User-Friendly Control: EasyStart Pro controller lets you schedule, monitor, and fine-tune heating at the touch of a button.
Problem It Solves
No more idling your engine or waking up cold in your van. With the S3 D2L installed, you’ll enjoy dry, reliable heat all night long, whether parked in the Rockies, winter camping, or on long-haul trips.
Common Use Cases
- Mercedes Sprinter camper conversions
- Winter road trips & ski adventures
- Remote off-grid camping
- Overnight trucking stops
How It Works
The Airtronic S3 D2L pulls diesel directly from your van’s tank and powers on 12V. Warm air is distributed through ducting, controlled by the EasyStart Pro interface. Its altitude sensor automatically adjusts combustion for clean burning at high elevations.
Suitable For
- Vans & Camper Conversions (Sprinter, Transit, ProMaster)
- RVs & Motorhomes
- Trucks & Fleets
- Marine & Off-grid cabins
Technical Specifications
Spec |
Details |
|---|---|
| Fuel Type | Diesel |
| Voltage | 12V |
| Max Heat Output | 6,800 BTU (2.0 kW) |
| Fuel Consumption | 0.10–0.24 l/h |
| Power Consumption | 13–30 W |
| Max Altitude | 9,800 ft |
| Warranty | 2 Years |
Trust Points
- Genuine Espar product, designed for Sprinter vans
- 10,000+ satisfied customers worldwide
- Ships within 24 hours (US-based stock)
- Backed by expert tech support and Heatso guarantee
Social Proof
⭐️⭐️⭐️⭐️⭐️ 4.8/5 Average Rating
“Flawless heater for my Sprinter. Quiet, fuel efficient, and altitude-ready.” – Ryan T.
“Installed it in 3 hours, keeps my van warm all night at 8,000 ft.” – Sarah L.
Comparison Table
| Product | Fuel / Voltage | Heat Output | Max Altitude | Loved For | Price Tier | Avg Rating |
|---|---|---|---|---|---|---|
| Espar Airtronic S3 D2L (this model) | Diesel, 12V | 2.0 kW / 6,800 BTU | 9,800 ft | Sprinter-ready kit, altitude sensor | $$ | ⭐️⭐️⭐️⭐️⭐️ |
| Espar Airtronic S3 D4L | Diesel, 12V | 4.0 kW / 13,600 BTU | 9,800 ft | Larger vans, extreme cold | $$$ | ⭐️⭐️⭐️⭐️⭐️ |
| Webasto Air Top 2000 STC | Diesel, 12V | 2.0 kW / 6,800 BTU | 7,000 ft | Budget-friendly, compact installs | $ | ⭐️⭐️⭐️⭐️ |
? Compare all Espar heaters →
FAQs
Q: Can I install this myself?
Yes — this kit includes everything you need for a DIY Sprinter install. Most users finish in 3–4 hours with basic tools.
? Espar fuel system installation tips
Q: Will it work at high altitudes?
Yes. The S3 generation includes an integrated altitude sensor that automatically adjusts combustion up to 9,800 ft.
? Ultimate guide to diesel heaters for high-altitude RV travel
Q: Is this kit specific to Sprinters?
This bundle is optimized for Sprinter vans, but the heater itself can be installed in other vans or RVs with proper ducting.
? Diesel heater for Sprinter vans: Everything you need to know
Q: How much battery does it use overnight?
With its 13–30W draw, a healthy leisure battery can easily run it overnight without issue.
? Complete guide to your van electrical system
Choosing Guide
Option Choosing Guide for this product is coming soon, please contact support@heatso.com 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.
