Pellet Boilers
Interio
18 kW
25 kW
The modern-designed Interio boiler is intended for users with limited space. Its installation requires only 1 m².
A+
Energy class
5+1
Years of Warranty
1m²
Required space

If you need a quality and reliable boiler but lack space, the Interio is the right solution. The small dimensions of this boiler allow it to fit into even the smallest rooms. Beyond its specific size, the Interio features top-quality construction — a cast iron pellet burner ensures complete combustion and flawless ignition. The boiler comes equipped with a pump, expansion vessel and safety valve, making it extremely easy to install. With its built-in tubular heat exchanger cleaning system, the Interio allows for easy maintenance and cleaning.
Product video
Features
Big Performance in a Small Space
— 01
Digital Regulation
The digital regulation system continuously manages combustion. The control software adapts to conditions, providing minimal fuel consumption and optimal gas emissions.
— 02
WiFi Control
The boiler can be controlled remotely. You can connect a room thermostat or WiFi module for monitoring and control.
— 03
Automatic Regulation
As the set temperature is approached, the regulation reduces power output and pellet consumption, resulting in lower fuel usage and optimal gas emissions.
— 04
Cast Iron Burner
The pellet combustion burner is cast from iron, providing complete combustion and flawless ignition.
Advantages
Additional Features
Everything you need to know about the Interio boiler and its advantages for your home.
- Quick installation and setup
- Automatic regulation with weekly programming
- Ideal choice for small utility rooms due to compact size
- Built-in circulation pump, expansion vessel and safety valve
- Easy cleaning and maintenance
- Minimal harmful gas emissions
Technical details
Technical documentation, certificates and user manuals
| Unit of measurement | Interio 18 | Interio 25 | |
| Boiler weight | kg | 256 | 256 |
| Heat power range | kW | 5.7-18.7 | 5.7-25 |
| Boiler water capacity | L | 40 | 40 |
| Minimum chimney vacuum | Mbar/Pa | 0.05/5 | 0.05/5 |
| Inlet/Outlet | " | 1" | 1" |
| Fume gases temperature | °C | cca 160 | cca 160 |
| Max. working temperature | °C | 80 | 80 |
| Max. working pressure | Bar | 2.5 | 2.5 |
| Height to flue pipe | mm | 286 | 286 |
| Boiler depth | mm | 785 | 785 |
| Boiler width | mm | 610 | 610 |
| Boiler height | mm | 1280 | 1280 |
| Flue pipe diameter | mm | 80 | 80 |
| Inlet/Outlet height | mm | 680/185 | 680/185 |
| Pellet tank volume | kg | 42 | 42 |
| El. power supply | V; Hz | 230V; 50Hz | 230V; 50Hz |
| El. power consumption nominal/max. | W | 100/420 | 100/420 |
| Min./Max. outlet water temperature | °C | 55/80 | 55/80 |
| Pellet consumption min./max. | kg/h | 1-3.6 | 1-4.6 |
| Fuel | - | pellet | pellet |
| Flue pipe direction | - | back | back |
Our products
Complete solutions for a comfortable home in all seasons. From efficient boilers to modern air conditioners.