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* ESTO only in Estonia, Latvia, Lithuania
ThermoFLUX Interio 25 pellet boiler with 42kg pellet hopper, 00025
ThermoFLUX Interio 25 is a compact pellet boiler designed for users with limited installation space. The boiler requires only approximately 1 m² of space, making it suitable even for small utility rooms and boiler rooms.
Interio 25 is equipped with a cast-iron pellet burner designed to provide complete pellet combustion and reliable ignition. A circulation pump, expansion vessel and safety valve are already integrated into the boiler, simplifying and speeding up heating-system installation.
The built-in tubular heat-exchanger cleaning system makes routine cleaning and maintenance easier.
The digital regulation system continuously manages combustion. The control software adapts operation to actual conditions, helping minimise fuel consumption and optimise gas emissions. As the set temperature is approached, automatic regulation reduces boiler output and pellet consumption.
A room thermostat or WiFi module can be connected for remote monitoring and control. The system also supports automatic regulation with weekly programming.
Main advantages
Quick installation and setup
Automatic regulation with weekly programming
Compact dimensions for small utility rooms
Requires only approximately 1 m² of installation space
Integrated circulation pump
Integrated expansion vessel
Integrated safety valve
Cast-iron pellet burner
Integrated tubular heat-exchanger cleaning system
Easy cleaning and maintenance
Room thermostat connection
WiFi module connection
Minimal harmful gas emissions
Energy efficiency class A+
Technical information
| Parameter | Value |
|---|---|
| Model | Interio 25 |
| Boiler weight | 256 kg |
| Heat output range | 5.7–25 kW |
| Boiler water capacity | 40 l |
| Minimum chimney vacuum | 0.05 mbar / 5 Pa |
| Inlet / outlet connection | 1" |
| Flue-gas temperature | approx. 160 °C |
| Maximum working temperature | 80 °C |
| Maximum working pressure | 2.5 bar |
| Height to flue pipe | 286 mm |
| Boiler depth | 785 mm |
| Boiler width | 610 mm |
| Boiler height | 1280 mm |
| Flue-pipe diameter | 80 mm |
| Inlet / outlet height | 680 / 185 mm |
| Pellet tank capacity | 42 kg |
| Electrical power supply | 230 V / 50 Hz |
| Electrical consumption nominal / max. | 100 / 420 W |
| Min. / max. outlet-water temperature | 55 / 80 °C |
| Pellet consumption min. / max. | 1–4.6 kg/h |
| Fuel | Pellets |
| Flue-pipe direction | Rear |
| Energy efficiency class | A+ |
All technical values are taken from the official ThermoFLUX Interio product page.