Autoterm Air 4D Boat Heater 4 kW 12 V – efficient heating for boats, campers & RVs

The Autoterm Air 4D 4 kW 12 V diesel heater is a powerful and reliable air heater designed for boats, campers, vans and small technical rooms where efficient and constant heat is important. The new 4D model builds on Autoterm's solid technology with even higher performance, low power consumption and stable operation — even in cold conditions.
With up to 4 kW of heating power, it can easily heat larger salons, cabins and living spaces without the need for external central heating, making it ideal for Scandinavian and Nordic climates.

⭐ Product benefits

🔥 Powerful and efficient heat

• Up to 4 kW heat output , which quickly heats rooms.

• Suitable for boats and mobile comfort rooms.

📉 Energy-efficient operation

• Low diesel consumption despite high power.

• Minimal battery load with optimized electronics.

🤫 Silent

• Low noise level during operation — comfortable temperature without noise.

🧠 Stable price and operation

• Automatic temperature control ensures even heat without overconsumption.

🛠️ Robust and compact

• Space-saving design makes it easy to install in limited spaces.

🛍️ Why buy Autoterm Air 4D?

✔ 4 kW of heat – perfect for larger spaces in boats and motorhomes
✔ Reliable in cold environments – ideal for winter use
✔ Fuel-efficient – ​​warm comfort level with low consumption
✔ Quiet operation – comfortable in living rooms
✔ Robust quality from a renowned manufacturer

📌 Areas of application

• 🚐 Campers & motorhomes

• ⛵ Boats & sailboats

• 🏕 Caravans & mobile homes

• 🛠 Technical rooms & workshops

• 🐾 Cabins & off-grid installations

🔧 Compatible Accessories

• Hot air hoses Ø60 mm & Ø75 mm – for air distribution

• Air inlet valves and air nozzles – for nice heat output

• Reducing adapters – for different hose diameters

• Connectors and T-pieces – for advanced air duct design