Espar AS3 B2L 12V Heater- Full Kit (Gasoline)
Espar AS3 B2L 12V Heater- Full Kit (Gasoline)
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The Espar AS3 B2L 12V Heater- Full Kit (Gasoline) is the classic way to heat the interior of your van using fuel from your main diesel tank. This kit includes everything you need to install the Espar in your Sprinter van and will operate effectively up to ~ 13,000 ft. in elevation with the included altitude sensor.
Not all Espar kits are built the same. These units are genuine Eberspacher heaters with high-quality wiring harnesses from Eberspacher.
Package contents:
- Espar AS3 B2L 12V Heater (Gasoline)
- INSTALL KIT - AIRTRONIC S3 B2L 12V
- CONTROL KIT - EASY START PRO CONTROLLER WITH ADAPTOR
- EXHAUST MUFFLER 24MM
- 26-28mm MUFFLER CLAMP (2x)
- FUEL LINE ADAPTER 7.5MM - 3.5MM
- GAS FUEL PICKUP(standpipe)
This kit comes with a fuel stand pipe(fuel pickup), not the T-Piece kit that is commonly known to be used. The Sprinter Aux port uses a Dorman connector and must be purchased separately. Please see image and Installation Manual below for more details.
Documents: Espar AS3 B2L 12V Heater- Full Kit (Gasoline)
Espar Camper Van Fuel Installation Guide
Espar AS3 B2L/D2L Install Instructions
Espar AS3 B2L/D2L Operating Instructions (English, pg 30)
Espar AS3 B2L/D2L Technical Sheet
Espar AS3 B2L/D2L Troubleshooting Guide
Espar AS3 B2L/D2L Spare Parts List
Espar AS3 B2L/D2L Repair Instructions
Easy Start Pro Controller Documents
Espar Easy Start Pro Controller Guide
Espar Easy Start Pro Controller Guide Additional Info
Espar Easy Start Pro - Additional Product Info
Espar Easy Start Pro Wiring Diagram
Specifications: Espar AS3 B2L 12V Heater- Full Kit (Gasoline)
|
Heater Dimensions (HxWxD) |
121.92mm (4.8 in.)H x 309.88mm (12.2".)L x 114.808mm (4.52 in.)W |
|
Weight |
5.5 lbs (2.5 kg) |
|
Heat Output |
6824 BTU (2.0 kW) |
|
Operating Voltage |
12VDC |
|
Rated Power Consumption |
11-26W |
|
Fuel Consumption |
0.04 - 0.07 gal/h (0.14 - 0.26 l/h) |
|
Fuel Type |
Gasoline |
|
Altitude Compensation |
13,120ft (4000m) |
|
Start Up Requirement |
Glow plugs require ~30A at startup for the first minute or two. |
Video: Espar Airtronic AS3-B2L Air Heater with Standard Install Kit (Gasoline)
FAQs
What is the best space heater for a camper?
The Espar AS3 B2L is one of the best space heaters for campers and vans. It connects directly to your vehicle's fuel tank, delivers 6824 BTU of heat output, and runs on 12V power with low fuel consumption of 0.04-0.07 gallons per hour. Unlike portable heaters, it provides safe, consistent warmth without condensation issues.
What is the best 12 volt heater for a camper?
The Espar AS3 B2L 12V heater is a top choice for camper heating. It draws only 11-26W during operation, making it ideal for off-grid camping. The included Easy Start Pro controller allows precise temperature management, and the genuine Eberspacher components ensure long-term reliability.
How do you heat a Sprinter van?
The most efficient way to heat a Sprinter van is with a fuel-fired heater like the Espar AS3 B2L. It taps into your main fuel tank and circulates warm air throughout the interior. Installation requires mounting the heater, connecting fuel lines via the auxiliary port, and wiring the 12V system with the included harness and controller.
What is the difference between diesel and gasoline van heaters?
Diesel heaters use diesel fuel and are designed for diesel-powered vehicles, while gasoline heaters like the Espar AS3 B2L run on gasoline for gas-powered vans. Both operate similarly, but you must match the heater fuel type to your vehicle's fuel system. Gasoline heaters require specific fuel pickups and safety considerations due to fuel volatility.
How much fuel does an Espar heater use?
The Espar AS3 B2L consumes between 0.04 and 0.07 gallons per hour (0.14-0.26 liters per hour) depending on the heat setting. Running on low for 8 hours uses approximately 0.32 gallons, making it extremely fuel-efficient for overnight heating during camping trips.
