⚠️ Diesel model only.
Backed by 50 years as an OEM diesel heater supplier to top truck, construction vehicle, and bus manufacturers worldwide, the HLN 4kW PRO brings factory-grade reliability to your van or RV build. This Pro version features automatic altitude adjustment up to 5,000m (16,000ft), a brushless fan motor rated for over 5,000 hours of operation, and integrated intake/exhaust mufflers for quieter running — all controllable from your phone via the included WiFi app.
Key Features:
- E-mark certified and proven on vehicles across Europe, the Middle East, Asia-Pacific, and the Americas
- WiFi app control with a built-in internal thermo sensor (external sensor optional)
- High-altitude performance — automatic adjustment up to 16,000 ft, plus a durable brushless fan motor and integrated mufflers for quiet, long-lasting operation
Specifications:
- Heating power: 4kW | Heating capacity: 1–3.5 kW
- Voltage: 12V | Fuel consumption: 0.12–0.43 L/h
- Weight: 4.5 kg | Dimensions: 388 x 141 x 150 mm
- Includes 5m (16ft) protected fuel line (ID 2mm/OD 4mm)

















