AUTOTERM combiBOIL Hot Water & Heating System – 9 Litre

Complete Hot Water and Heating Solution for Campervans, Motorhomes & Boats

The AUTOTERM combiBOIL system provides a simple and efficient way to combine hot water production and cabin heating using an AUTOTERM Air diesel heater and the AUTOTERM combiBOIL 9 Litre water heater.

Designed for campervans, motorhomes, boats, and off-grid applications, this campervan hot water system uses warm air from the AUTOTERM diesel heater to heat water inside the stainless steel combiBOIL tank while also providing comfortable interior heating.

When connected to 230V mains power, the integrated 500W heating element can heat the water independently, allowing you to enjoy hot water without running the diesel heater.

Simple Dual-Purpose Heating System

The combiBOIL works by directing heated air from your AUTOTERM Air heater through the water heater, transferring heat efficiently into the 9-litre stainless steel tank.

This provides:

• Hot water for washing and everyday use

• Efficient cabin heating

• Flexible operation from diesel heating or mains power

Winter / Summer Variable Flap Option

The optional Winter/Summer Variable Flap Y-Piece provides additional seasonal control.

Summer Mode

• Heats water using the AUTOTERM Air diesel heater

• Redirects warm air outside the vehicle

• Prevents unwanted cabin heating during warmer weather

Winter Mode

• Directs heated air back into the campervan

• Continues heating water while warming the interior

AUTOTERM combiBOIL Features

• 9-litre stainless steel water tank

• Built-in coolant heat exchanger

• Integrated pressure relief valve

• Built-in thermostat with 500W 230V heating element

• Closed-cell polyurethane insulation for reduced heat loss

• Rotatable stainless steel outer casing for flexible installation

• Standard G1/2" threaded connections

• Drain valve for winter storage

• Durable stainless steel construction

• Manufactured in Western Europe using premium materials

The corrosion-resistant stainless steel design makes the combiBOIL ideal for campervans, motorhomes, boats, and marine environments.

AUTOTERM Comfort combiBOIL Controller

The included AUTOTERM Comfort Boiler Controller provides simple and precise control of your hot water system with an easy-to-use digital display.

Controller Features

• Real-time water temperature display

• Adjustable temperature setting from 50°C to 80°C

• Adjustable heating hysteresis from 5°C to 25°C

• Simple digital operation

Available Heater Options

Choose from:

AUTOTERM Air 2kW Heater

• Suitable for compact campervans and smaller vehicles

• Uses 60mm ducting

AUTOTERM Air 4kW Heater

• Recommended for larger campervans

• Ideal for high-top, long wheelbase, and larger conversions

• Uses 90mm ducting

AUTOTERM air and water heaters are manufactured to ISO 9001:2015 standards and approved to E2 R10 and E2 R122 regulations for whole vehicle approval in road vehicles.

Kit Includes

combiBOIL System

• AUTOTERM combiBOIL 9 Litre (230V / 50Hz – 500W)

• AUTOTERM Comfort combiBOIL Controller

AUTOTERM Heater Kit

• AUTOTERM Air diesel heater

• Fuel pump with mounting bracket

• 1m exhaust pipe with silencer

• Fuel dip tube 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

• Selection of nuts and bolts

Internal Installation Kit

Includes:

• 1 × Heater fitting plate

• 2 × 60mm or 90mm vents

• 3m of 60mm or 90mm ducting

External Installation Kit

Includes:

• 1 × External heater box

• 2 × 60mm vents

• 4m of 60mm ducting

Additional Information

For 2kW heater kits, two 90mm to 60mm adaptors are included to allow connection between the heater, combiBOIL, and air outlet using 60mm ducting.

Warranty

Both the AUTOTERM Air diesel heater and AUTOTERM combiBOIL are supplied with a 3-year manufacturer's warranty, giving you complete confidence in your heating and hot water system.

The AUTOTERM combiBOIL is the ideal all-in-one solution for reliable hot water and comfortable heating wherever your adventures take you.

FAQ

Does the AUTOTERM combiBOIL work without mains power?

Yes. The combiBOIL can heat water using the AUTOTERM Air diesel heater without 230V mains power, and the 500W element can also be used when connected to mains.

Is this suitable for campervan conversions?

Yes. It is designed for campervans, motorhomes, boats, and off-grid applications where both hot water and cabin heating are needed.

Can I choose a heater size?

Yes. This system is available with either an AUTOTERM Air 2kW heater or an AUTOTERM Air 4kW heater, depending on vehicle size and ducting requirements.