AUTOTERM Air 4D 4kW Diesel Heater Campervan & Motorhome Kit

Powerful Diesel Heating for Larger Campervans, Motorhomes & Boats

The AUTOTERM Air 4D 4kW Diesel Heater Kit is the ideal heating solution for larger campervans, motorhomes, commercial vehicles, workshops, and boats. Delivering powerful, efficient heating with low fuel consumption, it's designed to keep larger living spaces warm and comfortable in all weather conditions.

Manufactured to ISO 9001:2015 standards and approved to E2 R10 and E2 R122 regulations, AUTOTERM heaters are renowned for their exceptional reliability, fuel efficiency, and long service life.

Available in 12V or 24V, this complete installation kit contains everything required for a professional installation.

Why Choose the AUTOTERM Air 4D?

The AUTOTERM Air 4D is designed for vehicles that require greater heating capacity than a 2kW heater can provide. With an adjustable heat output from 1kW to 4kW, it quickly warms larger interiors while remaining economical to run.

Capable of delivering up to 168m³ of heated air per hour, the Air 4D maintains a comfortable temperature with fuel consumption ranging from just 0.12 to 0.51 litres per hour.

Like all AUTOTERM Air heaters, it features a brushless induction motor, providing:

• Quiet operation

• Long service life

• Low electrical power consumption

• Reliable performance in temperatures as low as -45°C

Kit Includes

Main Installation Kit

• Controller of your choice

• Fuel pump with mounting bracket

• 1m exhaust pipe with silencer

• Fuel standpipe and fuel line

• Power cable with integrated fuse box

• 4m control panel cable (upgrade options available)

• Fuel pump power cable

• Air intake silencer

• Exhaust heat lagging

• Complete fixing kit with nuts and bolts

Internal Installation Kit

Perfect for heaters mounted inside the vehicle.

Includes:

• Turret mounting plate

• 90mm air vent

• 1.5m of 90mm ducting

External Installation Kit

Ideal for external heater installations.

Includes:

• Stainless steel external heater box

• 2 × 90mm air vents

• 2m of 90mm ducting

Product Features

• Powerful 4kW diesel air heater

• Available in 12V or 24V

• Ideal for larger campervans, motorhomes, trucks, boats, workshops and commercial vehicles

• High heating performance with excellent fuel efficiency

• Quiet brushless induction motor

• Low electrical power consumption

• Operates in temperatures down to -45°C

• High-altitude operation up to 4,200 metres

• Certified to ISO 9001:2015

• E2 R10 & E2 R122 approved for road vehicle installation

• Covered by a 3-year manufacturer's warranty

Technical Specifications

• Voltage: 12V or 24V

• Heating Output: 1.0–4.0kW

• Heated Airflow: 70–168m³/h

• Power Consumption: 10–57W

• Fuel Consumption: 0.12–0.51L/h

• Maximum Operating Altitude: 4,200m

• Heater Weight: 2.9kg

• Complete Kit Weight: Approximately 6.5kg

• Heater Dimensions: 402 × 157 × 188mm

Why Buy an AUTOTERM Heater?

• Premium European-built quality

• Outstanding value compared to many competing diesel heaters

• Powerful heating with low fuel consumption

• Quiet, efficient operation

• Compact and durable design

• Excellent cold-weather performance

• 3-Year Manufacturer's Warranty

• UK technical support and after-sales assistance

Frequently Asked Questions

Which AUTOTERM heater is best for my campervan?

The AUTOTERM Air 4D is recommended for larger campervans, long-wheelbase vans, high-top conversions, motorhomes, and larger boats where additional heating capacity is required. Smaller campervans are generally better suited to the 2kW Air 2D.

Is the heater available in both 12V and 24V?

Yes. The AUTOTERM Air 4D is available in both 12V and 24V versions to suit a wide range of vehicles.

Does the kit include everything needed for installation?

Yes. The kit includes all the essential installation components, including the controller, fuel system, exhaust, ducting, vents, wiring, and fittings. Choose either the internal or external installation kit depending on your installation requirements.

Is the AUTOTERM Air 4D suitable for a van conversion?

Yes. The AUTOTERM Air 4D is a strong choice for van conversion projects that need a reliable diesel heater for a van with higher heating demand, such as larger layouts and year-round use.

Can this diesel heater be used in Transit Custom conversions?

The Air 4D is best suited to larger campervan and motorhome layouts. For smaller conversions such as a Transit Custom, the 2kW Air 2D may be more appropriate depending on the size of the insulated space.

Designed for larger spaces and demanding conditions, the AUTOTERM Air 4D 4kW Diesel Heater Kit delivers dependable, efficient heating wherever your journey takes you.