All about our pellet boilers

Pellet boilers: ecological heat, full comfort
Three unbeatable advantages of the pellet boiler:
- CO2-neutral, ecological fuel from biomass
- Fully automatic central heating with modern convenience
- Cost-effective heating compared to oil
Pellet boilers for heat & power generation
- Integration of PV systems
- Pellet boiler with Stirling engine
Pellet boilers: future-proof and affordable heating
The high subsidies for pellet boilers underline the advantages of these boilers: a future-proof central heating system that combines sustainability and low-cost heating. Modern pellet boilers are available for different types of buildings: ÖkoFEN offers pellet boilers for detached houses and apartment buildings as well as pellet heating systems for large commercial properties.
Pellet boilers as fully automatic central heating systems
Our modern pellet boilers can be used as fully automatic central heating systems and provide warm living spaces and domestic hot water. Your ÖkoFEN pellet heating system is conveniently controlled from the “Pelletronic Touch” touch display or the “myPelletronic” app. A modern control system makes heating with sustainable biomass unbeatably convenient.
How a modern pellet heating system works in a detached house
From filling the store to combustion in the boiler and heat distribution in the house.
Pellet boilers with calorific value: tried and tested substance, modern heating system
With the innovative pellet boilers from ÖkoFEN, you can start the next heating season comfortably and efficiently - and with reduced heating costs.
Using the sustainable fuel wood pellets not only provides environmentally friendly heating, but also allows you to benefit from attractive subsidies when making the switch. The economical pellet boilers help to reduce energy costs in the long term and offer a future-proof heating solution.
Pellet boilers with condensing technology: Achieve maximum efficiency
If you want to achieve maximum efficiency with pellets, you can do so with a condensing boiler from ÖkoFEN: With a condensing boiler, the residual heat contained in the exhaust gases produced is also utilized for the heating circuit.
The calorific value is the total energy content of the fuel. With condensing technology, the calorific value of pellets can be almost completely utilized. ÖkoFEN is a pioneer in condensing technology for pellet boilers. We have developed the world's first pellet boiler with integrated condensing technology. The condensing boiler reduces pellet consumption and achieves maximum efficiency.

ÖkoFEN - the specialist for pellet boilers
The pellet boiler pioneer
ÖkoFEN produced the first type-tested pellet boiler in 1997. This was the beginning of a success story. The world's most widely used pellet boiler has technology that has been tried and tested for years and impresses with its absolutely reliable operation and top quality design.
Specialization in pellet boilers
ÖkoFEN exclusively develops and produces pellet boilers for heating with the sustainable fuel pellets. Today, the company is known as Europe's specialist for pellet heating systems. We are constantly developing innovations, such as condensing technology for pellet boilers or electricity-generating pellet boilers with Stirling engines.
Adjustable heating dimensioning
Your lifestyle and your living space can change over the years. That's why ÖkoFEN pellet boilers are flexibly adaptable within their output class. If a conversion requires more heat or the house is additionally insulated, all it takes is a few simple steps by the ÖkoFEN customer service team to adapt your pellet boiler to the new conditions.
Pellet boiler with buffer storage tank
A pellet boiler with a buffer cylinder offers two convincing advantages:
The pellet heating system with buffer cylinder works more economically: an insulated buffer cylinder filled with heating water absorbs the thermal energy from combustion. It stores it until the house also needs heat. With a buffer cylinder, the pellet boiler works constantly at a higher output, which reduces the inefficient start-up of the boiler.
Wear on the heating system is reduced: With a buffer storage tank, a pellet boiler operates at optimum performance over long distances, reducing wear on all components.
Becoming energy self-sufficient:
Autonomous heat and power generation with a pellet boiler
Do you want to become self-sufficient and generate heat and electricity for your home yourself? With myEnergy365, ÖkoFEN offers you an electricity-generating pellet boiler with a Stirling engine that converts the energy from pellets into electrical energy.
Complete systems from ÖkoFEN:
With PV system & electricity storage
Anyone who wants to generate their own electricity completely independently throughout the seasons will appreciate the combination of the electricity-generating pellet boiler from ÖkoFEN with an electricity storage unit, inverter and PV system:

Pellets - sustainable, inexpensive fuel
Pellets made from wood residues are burned in pellet boilers to generate heat energy and offer several convincing advantages:
- As biomass, pellets are a CO2-neutral fuel with low emission values.
As a fuel, pellets are cheaper than oil and, unlike fossil fuels, are good for the climate
With pellets, you are relying on a regional fuel.