compact pellet boiler Thermoflux Interio 18 kW
compact pellet boiler Thermoflux Interio 18 kW is in stock and will be shipped as soon as it is available again
Delivery and shipping
Delivery and shipping
Processing time is typically 1 business day. Delivery for parcels is 1-3 business days. For freight forwarding, delivery time is 3-5 business days. Delivery times outside Germany vary.
Description
Description
Thermoflux Interio 18 kW – compact pellet boiler for small boiler rooms
Product description
The Thermoflux Interio 18 kW is a compact pellet boilerIdeal as an auxiliary boiler or for small boiler rooms. Its space-saving design and integrated pellet silo allow for easy integration into existing heating systems without requiring a large installation space.
The fully automatic combustion ensures comfortable operation with consistently high performance, while the robust design enables long-lasting use.
Advantages
Its compact dimensions and integrated pellet silo save space and simplify installation. Automatic controls reduce daily maintenance and ensure efficient heat supply.
More Advantages include eligibility for KfW funding., the already installed expansion vessel and the charging pump; an optional retrofittable internet module enables additional monitoring and control functions.
Technical information

Power output range: 5–18 kW; Efficiency: 89.7%; Water capacity: 33 l; Chimney draft: 5 Pa; Flue pipe connection: 80 mm; Exhaust gas temperature: 160 °C.
Pellet silo volume: 42 kg; Pellet consumption: approx. 1.5–3.5 kg/h. Dimensions (H/W/D): 1280/615/790.5 mm; Weight: 237 kg.
Application areas and integration
The Interio is particularly suitable for residential buildings, holiday properties, or as a supplement to existing boilers in renovated buildings. Its compact design makes it attractive for installation in small boiler rooms or utility rooms.
Thanks to standardized connections, the boiler can be easily integrated into central heating systems and combined with buffer storage tanks or solar systems.
Installation and operation
The boiler comes with an integrated expansion vessel and charging pump, which reduces installation effort. During installation, ensure the required flue pipe diameter (80 mm) and the necessary chimney draft of 5 Pa.
The automatic burner control ensures safe ignition and flame monitoring; the compact design also facilitates service access and maintenance work.
Maintenance and service
Regular ash cleaning and periodic inspection of the combustion chamber are recommended to ensure consistently high efficiency. Maintenance intervals and scope depend on operating hours and pellet quality.
The optional internet module allows for monitoring of operational data and rapid detection of fault messages, further minimizing maintenance effort and downtime.
Promotion and accessories
The Thermoflux Interio is eligible for KfW funding.This can reduce investment costs. Useful accessories include an internet module and supplementary control and security packages.
Conclusion
The Thermoflux The Interio 18 kW offers a space-saving, high-performance solution for small heating systems and auxiliary units. Its high efficiency, fully automatic operation, and factory-installed expansion vessel and charging pump make it an economical and easy-to-integrate choice.
Technical data
- Power range 5-18kW
- Efficiency 89.7%
- Water capacity 33l
- Chimney draft 5 Pa
- Flue pipe connection 80mm
- Exhaust gas temperature 160°C
- Pellet silo volume 42kg
- Pellet consumption approx. 1.5-3.5 kg/h
- Height/Width/Depth 1280/615/790.5mm
- Weight 237kg
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