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Autoterm Air 12V diesel heater kits for caravans and RVs
Choose the heater output and controller combination that suits your installation. These complete single-outlet RV kits combine an AUTOTERM Air diesel heater with the selected controller, installation components and model-appropriate hot-air ducting.
These are 12V RV kits. Marine kits, 24V heaters and heater-only units are available separately. If you are unsure which output is suitable, contact us before ordering so we can consider the vehicle size, insulation, climate and duct layout.
Air 2D or Air 4D?
| Specification | Air 2D – 2 kW | Air 4D – 4 kW |
|---|---|---|
| Best suited to | Smaller caravans, campervans and cabins with lower heat demand | Larger spaces, colder conditions or installations requiring greater airflow |
| Heating output | 0.8–2.0 kW | 1.0–4.0 kW |
| Heated air volume | 34–86 m³/h | 70–168 m³/h |
| Electrical consumption | 10–29 W | 10–57 W |
| Diesel consumption | 0.10–0.24 L/h | 0.12–0.51 L/h |
| Heater dimensions | 310 × 119 × 145 mm | 402 × 157 × 188 mm |
| Heater weight | 2.9 kg | 5.5 kg |
| Typical hot-air ducting | 60 mm | 90 mm |
Controller choices
- Push Button: straightforward manual control for the Air 2D kit.
- Simple: straightforward controller supplied with the Air 4D kit.
- Comfort: digital control with additional operating and temperature-control functions.
- Comfort + Push Button: includes both controller types for installations requiring both controls.
What is included?
Every variant includes the selected 12V AUTOTERM Air heater, selected controller or controllers, standard installation kit, fuel intake, 1 metre of model-appropriate ducting, one floor plate and two vents.
| Model and controller | SKU | 7.5 L fuel tank included |
|---|---|---|
| Air 2D – Push Button | RVD796 | Yes |
| Air 2D – Comfort | RVD795 | Yes |
| Air 2D – Comfort + Push Button | RVD798 | Yes |
| Air 4D – Simple | RVD802 | Yes |
| Air 4D – Comfort | RVD800 | No |
| Air 4D – Comfort + Push Button | RVD803 | Yes |
If you select the Air 4D Comfort kit and require a separate tank, add the Autoterm 7.5 L diesel fuel tank.
Key features
- Diesel-powered air heating for caravans, campervans, motorhomes and suitable vehicle cabins
- 12V electrical system
- High-altitude-capable control unit
- Low setting from 0.8 kW on Air 2D or 1.0 kW on Air 4D
- Two-year warranty
- Designed for professional or carefully planned installation
Frequently asked questions
Is the Air 4D simply a more powerful Air 2D?
They use the same basic diesel air-heating principle and compatible controller family. The Air 4D has twice the maximum heat output, nearly twice the maximum airflow, a larger heater body and higher maximum fuel and electrical consumption.
Should I automatically choose the 4 kW model?
Not necessarily. Correct sizing depends on the heated volume, insulation, expected outside temperature and duct design. An oversized heater may spend more time operating at low output, while an undersized heater may struggle in colder conditions.
Can these kits be used for marine installations?
These variants are configured as RV kits. Choose a dedicated marine kit where marine-grade mounting and exhaust components are required.
