UnicPel Plus
Pellet boiler

Eco-friendly
central heating and DHW with only one device
Find out our UnicPel Plus pellet boiler
UnicPel Plus – the next generation pellet boiler by Mareli Systems
The UnicPel Plus pellet boiler delivers reliable and efficient home heating with minimal maintenance. Designed for long-term performance, it features an automatic combustion chamber cleaning system that keeps operation smooth and reduces the need for manual upkeep.
For even greater efficiency, the boiler can be equipped with an automatic turbulators cleaning system, maintaining clean heat exchange surfaces and consistent thermal output.
With its compact design, integrated pellet hopper, and intuitive smart control, UnicPel Plus provides a modern, eco-friendly, and low-maintenance heating solution — ideal for homes and small commercial spaces.
Main features

Automatic combustion management with a HUBA sensor
UnicPel Plus is equipped with a HUBA sensor for automatic management of the combustion process. The system monitors various indicators in real time and, based on the results, automatically adjusts the fan speed and pellet feeding. This allows for a customized combustion process recipe, tailored to the specific characteristics of each system.
Automatic cleaning of the burning chamber
UnicPel Plus is equipped with an integrated system that automatically cleans the combustion chamber at regular intervals. This function prevents ash buildup, maintains optimal combustion conditions, and significantly reduces the need for manual cleaning – ensuring consistent performance and longer service life.


Turbulator cleaning made simple
UnicPel Plus features a user-friendly manual cleaning mechanism for the turbulators. With just a few quick movements, the user can easily remove soot buildup and ensure optimal boiler performance.
For even greater convenience, UnicPel Plus also offers an optional automatic turbulators cleaning system, further reducing maintenance and maximizing long-term efficiency.
High-Efficiency Insulation
The combustion chamber of the UnicPel Plus boiler is insulated with a new generation of high-efficiency thermal insulation, manufactured in Switzerland by the leading company SAGER.
This material—a blend of safe, natural components—is precisely marked and cut using laser technology, ensuring exceptional craftsmanship and minimal production waste. Thanks to this insulation, the boiler exhibits minimal radial heat loss, with nearly all of its power focused on the heating hydraulic system.

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