Airtronic D4 Diesel Heater for Motor Homes & RVs

Turn cold mornings into welcoming starts with the Eberspächer Airtronic D4, a compact, independent diesel heater designed for large motorhomes and boats. This truly self-contained climate solution runs off diesel, not engine heat, so you stay comfortable on the road, at the marina, or off-grid wherever winter winds blow.

Engineered for speed, reliability, and efficiency, the Airtronic D4 delivers fast, even warmth from floor to ceiling. A built‑in safety sequence pre-heats the glow plug, meters fuel, ignites a controlled flame, and uses a high‑capacity blower to push warm air through ducting—so you’re warm sooner after dawn or after a chilly excursion, with windshields and windows staying clearer in damp climates.

Consistent comfort, tailored to your schedule

• Preset comfort levels provide a steady cabin climate without constant fiddling, whether you want a gentle night-time warmth or a brisk daytime boost.
• Quiet operation at night with the lowest setting around 850–900 W, so you can rest undisturbed while the system quietly maintains comfortable heat.
• Smart power management keeps fuel and electricity use low, making extended winter trips or off‑grid stays more feasible and enjoyable.

Powerful, efficient heating that fits your RV lifestyle

• Output options: Low 900 W, Medium 2,000 W, High 3,000 W; Peak performance up to 4,000 W when you need rapid warmth.
• Fuel consumption per level: Low 0.11 L/h, Medium 0.25 L/h, High 0.38 L/h, Peak ~0.40 L/h—so you can plan long trips with confidence.
• Electrical draw: 7 W (low), 13 W (medium), 24 W (high), with system load around 40 W—designed to minimize impact on your battery bank.

Compact, complete turnkey installation

The Airtronic D4 is purpose-built for RVs and boats, offering a compact footprint that preserves interior space. The kit includes everything you need for a straightforward install: the D4 unit, 5 m of 90 mm ducting, a 90 mm air outlet, electrical harness and connections, fuel pump with 8 m fuel line, mounting bracket and hardware, an exhaust silencer, 1 m exhaust pipe, 1 m combustion intake pipe, and a mini controller.

Specs at a glance

• Dimensions: 376 x 140 x 150 mm
• Weight: 4.5 kg
• Power supply: 12/24 V operation
• Fuel: Diesel
• Output ranges: Low 900 W, Medium 2,000 W, High 3,000 W; Peak 4,000 W
• Fuel consumption: Low 0.11 L/h, Medium 0.25 L/h, High 0.38 L/h, Peak 0.40 L/h
• Power draw: 7 W (low), 13 W (med), 24 W (high), 40 W (system load)
• Ducting: 5 m with 90 mm outlet

Why this is the right choice for demanding RV climates

Ideal for large motorhomes that demand rapid heat after chilly mornings, off‑grid trips where engine heat isn’t available, and winter stays where condensation control matters. The Airtronic D4 blends robust heating performance with intelligent controls and a compact footprint, so you gain dependable warmth without sacrificing living space. It’s a trusted, purpose-built solution for RV climate control that keeps your cabin comfortable, your windows clear, and your downtime cozy.