Questions and answers

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1. The heater unit is supplied with fresh air from outside or a well-ventilated room, which is drawn through an air intake pipe and sent to an internal combustion chamber.
2. The received air is mixed with fuel, which is delivered by a metering fuel pump to form the air-fuel mixture.
3. The produced mixture is then ignited by a glow plug, which starts the burning process to heat up the heat exchanger.
4. Air is drawn from the air inlet with a fan and passed through the heat exchanger radiator fins. Finally, the heated air is pushed through a hot air outlet.

1. The water heater’s unit is supplied with fresh air from outside, which is drawn through the air intake pipe, and sent to an internal combustion chamber.
2. The received air is mixed with fuel delivered by a metering fuel pump to form the air-fuel mixture.
3. The produced mixture then is ignited by a glow plug, which starts the burning process to heat up the heat exchanger.
4. Circulation pump coolant, water or any other heating system liquid is passed through the heat exchanger fins and is heated as a result.

Fuel can be supplied from an additional fuel tank or from the fuel tank of your vehicle. 

Standard diesel or Winter diesel. 

Bio diesel should not be used as a fuel. 

Bio diesel contains fast-growing bacteria which clogs up the fuel pump and burning chamber, damaging the heater.

If the heater is turned on regularly - once in two weeks on maximum power for 30 minutes in the summer no service or inspection is needed. These simple steps will help you to avoid technical problems with the heater, and make use of the heater straight-forward when, after a period of disuse, the cold season begins. 

• PLANAR 2D ~ 20 m3/h
• PLANAR 44D ~ 40 m3/h
• PLANAR 8D ~ 60 m3/h

Fuel consumption   Min l/h    Max l/h 

 PLANAR 2D              0.10          0.24

 PLANAR 44D            0.12          0.51

 PLANAR 8D              0.42         0.76

 PLANAR 9D               0.42        1.00

Benefits for air heaters from Autoterm:

• Reliable operation in low temperatures (up to -45°C)

• High quality and affordable price

• Low noise level and extended lifetime due to the

induction electric motor developed by the company

• Low fuel consumption

• All air heaters are equipped with the complete assembly set

• Self-diagnostic check

Air heaters can be installed in cars, trucks, campers, boats.