Direct: (503) 987-4002
Main: (503) 987-4000





The Espar AS3 B2L is a genuine Eberspächer gasoline air heater for van builders running a gasoline/petrol fuel system — no diesel tank required. It taps directly into your van's main gas tank, draws just 11–26W of electricity, and heats your van's interior effectively up to 13,120 ft (4,000 m) with the included altitude sensor.
| Dimensions (H × L × W) | 4.8" × 12.2" × 4.52" |
| Weight | 5.5 lbs (2.5 kg) |
| Heat Output | 6,824 BTU (2.0 kW) |
| Operating Voltage | 12V DC |
| Power Consumption | 11–26W |
| Fuel Type | Gasoline |
| Fuel Consumption | 0.04–0.07 gal/hr |
| Altitude Compensation | Up to 13,120 ft (4,000 m) |
| Startup Draw | ~30A for first 1–2 minutes |
Espar Camper Van Fuel Installation Guide
Espar AS3 B2L/D2L Install Instructions
Easy Start Pro Controller Guide
We ship nationwide and internationally. Most in-stock items leave our shop within 1–3 business days. Made-to-order and oversized parts may require additional lead time; any special timing will be noted on the product page.
If an order is placed outside of our normal business hours (Monday–Friday), we will process it as soon as possible once our team is back in the shop during regular operating hours. Weekend orders will be handled the next business day.
We want you stoked on your gear. Eligible items may be returned within 30 days of delivery for a refund or exchange.
Many products include a manufacturer warranty. We’re happy to help facilitate claims—reach out with your order number, photos, and a description of the issue.
Questions about shipping or returns? Get in touch—our team is here to help you get trail-ready.
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