The ROJEK PK BIO 25 is a high-performance wood gasification boiler with a nominal output of 25 kW for single-family and two-family homes. It enables efficient and low-emission combustion of logs up to 530 mm in length and meets EN 303-5 Class 5 and Ecodesign standards.
Highlights/Advantages
⭐ 25 kW nominal power – ideal for larger detached houses
⭐ 130 liter combustion chamber – long burning time
⭐ Top loading – convenient filling
⭐ Electronic control – controlled wood gasification
⭐ EN 303-5 Class 5 & Ecodesign compliant
Area of application & Target audience
Suitable for residential buildings and smaller commercial units with medium heating requirements. Particularly economical in combination with a buffer storage tank.
Everyday benefits
The top loading mechanism allows for quick refueling. The generous combustion chamber volume enables long burn times. Cleaning is conveniently accomplished via external controls.
Technology & equipment
Rated power: 25 kW
Filling chamber volume: 130 liters
Max. log length: 530 mm
Maximum wood moisture content: 20%
Calorific value of fuel: 14–18 MJ/kg
Electronic control
Efficiency & Environment
Meets EN 303-5 Class 5 for firewood.
Ecodesign compliant according to EU 2015/1189.
Technical data
| feature | Value |
| Manufacturer | ROJEK |
| Model | PK BIO 25 |
| Boiler type | wood gasification boiler |
| Rated power | 25 kW |
| fuel | firewood |
| Filling chamber volume | 130 l |
| Max. log length | 530 mm |
| standard | EN 303-5 Class 5 |
| Ecodesign | Yes |
Scope of delivery
FAQ
What is the permissible length of wood?
Up to 530 mm.
Is the boiler eligible for funding?
It meets Class 5 and Ecodesign standards; national funding conditions need to be checked.
How long does a filling burn?
Approximately 5–9 hours, depending on the fuel.
Is a buffer storage tank required?
Recommended for standard-compliant operation.
What wood moisture content is permissible?
Maximum 20%.
Where does the cleaning take place?
Accessible via cleaning lever and maintenance door from the outside.
Conclusion
The ROJEK PK BIO 25 is an efficient solution for medium heat requirements and combines robust technology with modern emission compliance.