91 %
Efficiency
Possible conversion to
COMBI PELLET
High quality
Material
Large loading
chamber
ATTACK DPX is an ecological wood boiler of the 5th emission class, which offers high-quality construction. High combustion efficiency of up to 91% saves significant heating costs. An extra-large loading chamber can save significant time on wood processing. The boiler offers simple operation, high comfort, and the possibility of conversion to a combined boiler and heating only with pellets.
Suitable for every type of house
A solid fuel boiler with strong power and high efficiency is suitable for every type of house. Take advantage of the opportunity to get a new boiler with the Green Households program.
Boiler connection
Correct connection of the boiler to the chimney is very important. Every house has a different height and area. When choosing the right type of boiler for your house, the power to the chimney and the heating system is important. We always recommend consulting this topic with a service technician, chimney sweep, or designer.
Large loading chamber and long burning
We equipped the ATTACK DPX with an extra-large loading chamber for power ranges 25 – 45 kW (100 to 200 liters) with a length of (550 mm to 750 mm). Thanks to the large chamber, you save time on wood preparation. You only need to split a meter-long log once. ATTACK DPX 80 to 100 kW provides a loading chamber length of up to 1,100 mm, so you can easily load meter-long pieces of wood into them. Fuel with correct moisture can burn for 8 to 12 hours (applies only during steady burning operation).
Practical advice for the boiler
Wood boiler care
Find out everything necessary about wood boilers. How to quickly and effectively ignite the boiler. Why tar can form and how to correctly clean the boiler.
High efficiency and ecological combustion
We manufacture boilers so that they have the least impact on the environment, which we consider essential for life. Wood gasifying technology is, compared to combustion in a conventional boiler, highly ecological, efficient, and significantly less burdensome for the environment. Gasification takes place via precisely controlled technology. This improves the overall efficiency of wood combustion, and its values reach up to 91%. Higher efficiency is reflected mainly in costs, as you consume less fuel.


- For irregularly heated objects
- Regulation for simple systems with an accumulation tank
- Boiler temperature control – boiler thermostat
- Fan shutdown after fuel burnout – flue gas thermostat
- Possibility to connect a Regumax supplementary regulator
- Display of outlet temperature and pressure of heating water on the thermomanometer

- Suitable for everyday heating
- PID regulator – more precise and continuous control of fan speed and Fuzzy Logic control sensors
- Controls 2 pumps (heating circuit pump + accumulation tank or DHW charging pump)
- For solutions with an accumulation tank – built-in tank charging logic and discharge protection
- Simple operation and display with current operating information (boiler temperature, flue gas temperature, temperature in the accumulation tank)
- Parameter monitoring (fan operation, DHW/accumulation tank charging pump operation, circulation pump operation)
- Automatic boiler shutdown after fuel burnout

Technical information on important parts of a wood-burning boiler that might interest you.

Control panel
The boiler has a choice of three types of control electronics:
STANDARD – Electronics with basic control. Especially suitable for simple systems that do not require complex settings. More about STANDARDelectronics.
PROFI – Electronics with simple operation. With this electronics, the air supply control and exchanger cleaning are manual. More about PROFIelectronics.
LAMBDA – Electronics with LCD display. The air supply is controlled automatically by servomotors. More about LAMBDA electronics.
Turbulators
The boiler is equipped with a high-efficiency tube heat exchanger with turbulators which contribute to the high efficiency of the boiler and reaches a value of up to 92%.
Refractory concrete fitting
Long boiler life: Reliable operation is also ensured by a high-quality refractory concrete nozzle that can withstand temperatures up to 1350 ° C.
Loading chamber door
Through the loading door, it is possible to load wood with a length of up to (350 mm and 750 mm) into the boiler. The boiler has an oversized loading chamber with a volume (82 and 190 liters). The advantage of the above-standard loading space is the division of wood at the meter, which you only need to divide once.
Turbulator lever
The turbulator cleaning lever is used to clean the dirt deposited between the turbulators. All versions except the 15 kilowatt version have a manual lever.
Cleaning hole
The side opening of the boiler is used to clean the ash from the turbulators. The cleaning intensity depends on the heating intensity in the boiler.
Fan
It is used to maintain the boiler output
After-cooling circuit
It is used to cool down the exchanger when the boiler emergency temperature is reached.
Automatic chimney flap
The chimney flap takes care of direct flue gas extraction from the loading chamber into the chimney and also serves for easier heating.
Combustion chamber door
The lower door is mainly used to clean the ash from the boiler. With the PROFI version, it is also possible to set the air supply manually.
Technical data and documents for download
The wood gasifying boiler ATTACK DPX offers high efficiency up to 91%, a large loading chamber, long burning, high-quality processing, and long life. Find out more about other technical data.
- Possibility of conversion to a combined boiler
- High combustion efficiency 91%
- Wide power range 25, 30, 35, 40, 45, 80, 100 kW
- Long burning 8 to 12 hours
- Automatic chimney damper
- Large loading chamber up to 400 – 1100 mm
- Choice of Standard or Profi regulation
- Refractory concrete pieces withstanding temperatures up to 1350 °C
| Boiler type | ||||||||
| Parameter | Unit | DPX25 | DPX30 | DPX35 | DPX40 | DPX45 | DPX80 | DPX100 |
| Nominal output (STANDARD version) | kW | 25 | 30 | 35 | 40 | 45 | 80 | 100 |
| Output range (PROFI, LAMBDA version) | kW | 12,5 – 25 | 15 – 30 | 17,5 – 35 | 20 – 40 | 22,5 – 45 | 32 – 80 | 40 – 100 |
| Heat exchange area | m2 | 2,52 | 2,78 | 2,78 | 3,03 | 3,03 | 5,6 | 5,6 |
| Volume of feeding chamber | dm3 | 125 | 158 | 158 | 190 | 190 | 440 | 440 |
| Dimension of feeding door | mm | 235×445 | 235×445 | 235×445 | 235×445 | 235×445 | 292×542 | 292×542 |
| Prescribed chimney draught | Pa | 35 | ||||||
| Max. operating overpressure of water | kPa | |||||||
| Pressure loss on the water side (ΔT 10 K) | kPa | 2,3 | 4,4 | 4,4 | 6,6 | 6,6 | 2,1 | 2,1 |
| Pressure loss on the water side (ΔT 20 K) | kPa | 0,7 | 1 | 1 | 1,8 | 1,8 | 0,55 | 0,55 |
| Boiler weight | kg | 430 | 460 | 460 | 490 | 490 | 800 | 800 |
| Diameter of flue gas connection | mm | 200 | ||||||
| Boiler height „A“ | mm | 1575 | ||||||
| Boiler width „B“ | mm | 915 | ||||||
| Boiler depth „C“ | mm | 1240 | 1340 | 1340 | 1440 | 1440 | 1890 | 1890 |
| Length of feeding chamber „D“ | mm | 590 | 690 | 690 | 790 | 790 | 1100 | 1100 |
| Grade of protection | IP | |||||||
| El. input | W | 38 | 48 | 54 | 54 | 78 | 90 | 90 |
| Boiler efficiency | % | 90,4 | 90,1 | 90,1 | 90,2 | 90,2 | 86,5 | 87 |
| Boiler class by CO (under the norm EN 303-5) | – | |||||||
| Flue gas temperature by nominal output | °C | 165 | 170 | 180 | 170 | 180 | 204 | 205 |
| Flue gas flow by nominal output | kg/s | 0,018 | 0,02 | 0,022 | 0,025 | 0,028 | 0,045 | 0,05 |
| Max. noise level | dB | |||||||
| Fuel type | – | |||||||
| Average fuel consumption | kg/h | 6,5 | 7,8 | 9,1 | 10,4 | 11,75 | 21,5 | 26,8 |
| Approximate wood consumption per season | – | |||||||
| Max. length of wood logs | mm | 550 | 650 | 650 | 750 | 750 | 1000 | 1000 |
| Combustion time at nominal output | hod | |||||||
| Volume of water in the boiler | l | 100 | 110 | 110 | 128 | 128 | 250 | 250 |
| Connection voltage | V / Hz | |||||||
| Range to set the heating water temperature | °C | |||||||
| Minimum storage tank volume (l) | l | 600 | 700 | 800 | 1000 | 1100 | 2000 | 2800 |
| Recommended storage tank volume (l) | l | 1400 | 1600 | 2000 | 2200 | 2500 | 4000 | 5000 |
Solution for smaller boiler rooms
Do you need something with smaller dimensions for your house? We have a solution for you. Wood boiler ATTACK DPX 15 with compact dimensions and 15 kW power. The loading chamber volume is 82 liters with a maximum log length of up to 35 cm.
High-quality processing
All our products are manufactured with an emphasis on the selection of quality materials and the use of correct technologies and procedures. Special boiler steel, movable turbulators, and refractory concrete pieces withstanding temperatures up to 1350 °C. Quality processing and own know-how are a guarantee of reliable service and long life.
Higher boiler power with an buffer tank
To achieve higher boiler power, we recommend purchasing an buffer tank and an ATTACK Oventrop mixing device for the boiler.
asis on the selection of quality materials and the use of correct technologies and procedures. Special boiler steel, movable turbulators, and refractory concrete pieces withstanding temperatures up to 1350 °C. Quality processing and own know-how are a guarantee of reliable service and long life.
Find out what benefits an buffer tank brings
Simple fuel change
The choice of fuel is up to you. Wood boiler ATTACK DPX offers the possibility of conversion to a combined boiler ATTACK DPX Combi pellet. Changing fuel is simple and can be handled by everyone. By purchasing a fully automatic pellet burner, which is mounted on a positional pantograph, it can be very easily inserted into the boiler’s upper door, and you can use pellets as fuel. A great advantage is the economic choice of fuel and increased comfort thanks to the fully automatic pellet burner.
Green Households subsidy program
Take advantage of a great chance to get a new modern device for a family house with a subsidy of up to €1,500. Request a price offer, and we will handle the entire process, including the subsidy, for you.
Choose a service partner
Creating a high-quality and prompt service network for our customers is very important to us. Our service partners thus provide prompt service assistance to every customer throughout the year.






