Espar AL3-D6L - 12V

When you need maximum heat output in a demanding environment, the Espar Airtronic AL3-D6L 12V is the answer. This Generation 3 diesel air heater delivers 6 kW / 20,500 BTU of powerful, fuel-efficient warmth — built for cargo vans, RVs, marine applications, school buses, specialty equipment and heavy off-highway equipment.

Why the AL3-D6L?

• 6 kW / 20,500 BTU output — Espar’s highest-output 12V air heater, built for large spaces and extreme cold
• Brushless blower motor — extended service life and quieter operation than previous generations
• Long-life burner chamber — reliable ignition and consistent combustion season after season
• Stepless heating output — precise temperature control without on/off cycling
• Auto altitude adjustment to 15,000+ ft — built-in, no extra module required
• Runs on diesel — integrates with your existing fuel supply

Specs

Fuel: Diesel  |  Voltage: 12V  |  Max Output: 6 kW / 20,500 BTU

Installation

This is the heater unit only. A vehicle-specific installation kit is required — P/N 20.2829.60.0600.

Also Available

The AL3-D6L is available as an ECHO 6 — a nose-mounted enclosure designed for box trucks. Call us for details: 800.837.3900.

Ideal For

• Cargo vans & large commercial vehicles
• Heated box trucks
• RVs & motorhomes
• Marine & boat applications
• School buses
• Off-highway & construction equipment

Eberspaecher / Espar Part Number: 25.2959.05.0000 (Heater only)