Wood gasifier 25 kW ATTACK SLX 25 Profi

The ATTACK SLX 25 PROFI This is a high-performance 25 kW wood gasifier for the efficient and low-emission combustion of logs. It is ideally suited for single-family and two-family homes with higher heating requirements, as well as for renovation projects with an existing chimney system. The tested emission values ​​according to EN 303-5 confirm reliable and compliant heating technology.

Highlights/Advantages

⭐ 25 kW nominal power – ideal for larger detached houses
⭐ Efficiency up to 91.6% – efficient use of firewood
⭐ Certified according to EN 303-5:2012 – tested emission and performance values
⭐ Robust manual loading – durable, maintenance-friendly technology
⭐ Suitable for Class A wood – Standard-compliant combustion of dry logs

ATTACK SLX 25 PROFI wood gasifier 25 kW

Area of ​​application & Target audience

The ATTACK SLX 25 PROFI is a Hot water boiler for solid fuels (wood) With manual loading. It was designed for use in residential buildings and is particularly suitable for:

• Single-family homes with higher heating requirements

• Two-family houses

• Modernization of existing buildings

• Heating systems with buffer storage

The preferred fuel type is Logs with a moisture content ≤ 25%.

Everyday benefits

Thanks to the proven wood gasification principle, combustion takes place in two phases: First, the wood is gasified, then the wood gases are combusted. This results in:

• stable heat output

• high energy yield

• low emissions

• efficient fuel use

The design allows for easy cleaning via turbulator levers, side cleaning openings and an accessible ash box system.

Technology & equipment

• Boiler type: Wood gasification hot water boiler

• Fuel feed: manual

• Primary and secondary air adjustable

• Turbulators for efficiency optimization

• Fan-assisted combustion

• Thermal safety device required

• Recommended chimney draft: 23–30 Pa

• Minimum chimney diameter: 150 mm (200 mm recommended)

• Maximum operating pressure: 2.5 bar

For a long service life, the return temperature must remain consistently above 65 °C. The manufacturer recommends a boiler thermostat setting of 80–85 °C.

Efficiency & Environment

The ATTACK SLX 25 PROFI meets the requirements of EN 303-5:2012 for boilers of fuel class A.

Measurement values ​​according to certificate (rated power):

• Nominal heat output: 25 kW

• Minimum heat output: 12.5 kW

• Efficiency: 91.6%

• CO at 13% O₂: 99 mg/m³

• Dust at 13% O₂: 10 mg/m³

The emission and performance values ​​were confirmed by an accredited testing laboratory.

compatibility & System integration

The SLX 25 PROFI is typically combined with:

• Buffer storage

• Return flow booster/mixing device

• thermal safety device

• Expansion vessel

• Safety valve

Suitable Buffer storage tanks, safety groups and return temperature boosts You can find them in our product range on gemashop.de.

Technical data

Scope of delivery

• ATTACK SLX 25 PROFI wood gasifier

• User manual

• Assembly instructions

Assembly & Safety instructions

Installation and commissioning must be carried out exclusively by a qualified specialist company.

Important instructions:

• Thermal safety device absolutely necessary

• Return temperature boost necessary to prevent condensation

• Compliance with chimney requirements

• Regular cleaning of the ash box, heat exchanger and turbulators

Failure to comply with the installation instructions may limit the warranty.

FAQ

1. What wood moisture content is permissible?
Maximum 25% residual moisture, recommended 12–20%.

2. Is a buffer tank required?
A buffer storage tank is recommended for efficient operation and compliant integration.

3. What is the efficiency?
The tested efficiency is 91.6% at nominal power.

4. What emission levels are achieved?
CO 99 mg/m³ and dust 10 mg/m³ at 13 % O₂.

5. What chimney parameters are required?
Minimum 150 mm diameter and 23–30 Pa chimney draft.

6. How often does it need to be cleaned?
Empty the ash box daily, and clean the heat exchanger and turbulators regularly according to the operating instructions.

Conclusion

The ATTACK SLX 25 PROFI 25 kW This is a high-performance, certified wood gasifier for larger residential buildings. A reliable and efficient solution for sustainable heating with logs. Order now and future-proof your heating system.