The ThermoFlux Pelling ECO 25 is a modern pellet boiler with automatic combustion and integrated controls for efficient central heating systems. With an output of up to 25 kW, it is ideally suited for single-family homes and smaller apartment buildings.
Thanks to the large pellet hopper with a capacity of up to 135 kg and the high efficiency, the boiler offers a comfortable and economical heat supply.
⭐ Highlights/Advantages
- ⭐ 25 kW pellet boiler for single-family homes and smaller buildings
- ⭐ Efficiency up to over 91% for efficient operation
- ⭐ Pellet hopper up to 135 kg for long refill intervals
- ⭐ Automatic control with flame temperature sensor
- ⭐ Boiler class 5 according to EN 303-5 for low emissions
Area of application & Target audience
The ThermoFlux Pelling ECO 25 is designed for use in:
- Private households (single-family homes)
- smaller apartment buildings
- Renovation and new construction projects
- SHK specialist companies as a reliable biomass heating solution
Everyday benefits
Automatic pellet feeding and ignition ensure ease of use. Thanks to intelligent control, the output continuously adjusts to the heat demand. The large hopper reduces maintenance and refilling intervals.
Cleaning is easy thanks to the accessible combustion chamber and heat exchanger. Regular maintenance ensures long-lasting and safe operation.
Technology & equipment
The pellet boiler features automatic ignition and controlled combustion via a flame temperature sensor. The control system dynamically adjusts the pellet feed and fan speed.
- integrated electronic control
- automatic power adjustment (10 levels)
- Flame temperature monitoring
- Buffer sensor connection possible
- Room thermostat connectable
The system operates using wood pellets in accordance with EN ISO 17225-2. :contentReference[oaicite:0]{index=0}
Efficiency & Environment
The Pelling ECO 25 achieves an efficiency of up to 92% in partial load operation and over 91% at rated output.{index=1}
With boiler class 5 according to EN 303-5, it meets high requirements for emissions and energy efficiency. :contentReference[oaicite:2]{index=2}
compatibility & System integration
The pellet boiler can be integrated into conventional heating systems:
- Buffer storage tank (recommended)
- radiator systems
- Underfloor heating
- Systems with room thermostat
The manufacturer recommends using a buffer storage tank, but it is not absolutely necessary.
Technical data
| Manufacturer | ThermoFLUX |
| Model | Pelling ECO 25 |
| Product type | Pellet boiler |
| Rated power | 8 – 25 kW |
| efficiency | up to 92% |
| Pellet consumption | 1.6 – 5.2 kg/h |
| Pellet container | 75/135 kg |
| Weight | 267 kg |
| Water content | 60 liters |
| Max. operating pressure | 3 bar |
| Max. temperature | 80 °C |
| Tension | 230 V |
| frequency | 50 Hz |
| Power consumption | max.340 W |
| boiler class | Grade 5 |
| Exhaust gas temperature | 82.5 – 155 °C |
| Exhaust connection | Ø 120 mm |
| Connection flow/return | 1 inch |
| Dimensions (H x W x D) | 1245 x 410 x 948 mm |
Scope of delivery
- Pellet boiler ThermoFlux Pelling ECO 25
- Cleaning tool
- User manual
Accesories & System recommendation
For optimal and safe operation, we recommend the following components:
Suitable system components
Assembly and safety instructions
Installation must be carried out exclusively by qualified personnel. All national regulations and requirements for the exhaust system and hydraulic system must be observed.
A suitable chimney with sufficient draft (approx. 5–12 Pa) is required. :contentReference[oaicite:3]{index=3}
FAQ
For which buildings is the 25 kW pellet boiler suitable?
The boiler is suitable for single-family homes and smaller multi-family homes with corresponding heat requirements.
How high is the pellet consumption?
Depending on the power level, consumption ranges between approximately 1.6 and 5.2 kg per hour.
Is a buffer storage tank necessary?
A buffer storage tank is recommended, but not absolutely necessary for operation.
Which pellets may be used?
Only wood pellets conforming to EN ISO 17225-2 may be used.
How is the regulation carried out?
The control is automatic via an electronic control system with a flame temperature sensor.
How often does the boiler need to be cleaned?
Cleaning depends on the pellet quality, but is carried out at regular intervals (several times a month).
