"We want to heat with pellets" can mean two very different things: a stove in the living room that provides warmth and a flame in the evening – or a boiler in the cellar that supplies the whole house including hot water. Both burn the same pellets, everything else differs. Here is the comparison so you can make the right decision.
The pellet stove: warmth for the room
A pellet stove stands in the living space like a wood stove, has a hopper for 15 to 30 kilograms of pellets and electronic controls: ignition, auger and fan work automatically, usually via thermostat, timer or app. The output is 4 to 10 kilowatts – enough for 40 to 120 square metres of open living space. It is refilled by hand from the bag, every one to three days.
Advantages: low purchase cost (around €2,500 to €6,000 plus chimney connection), no pellet store, programmable heat, visible flame. Disadvantages: fan noise, electricity consumption, regular refilling and emptying the ash pan, no supply to other rooms or hot water. Pure room-air pellet stoves are not subsidised.
The in-between solution is the water-bearing pellet stove: it gives part of its heat to the room and the larger part to a buffer tank that supports heating and hot water. With buffer tank and particle separator it is eligible for subsidies.
The pellet boiler: warmth for the house
A pellet boiler stands in the boiler room, has 8 to 30 kilowatts and completely replaces oil or gas boilers. The pellets come automatically to the burner from a storage room, fabric tank or underground tank via a suction or auger system; one delivery by silo truck supplies a family home for the whole season. Ash containers are emptied every few weeks to months.
Advantages: full supply including hot water, highest comfort, very good subsidies (up to 80 percent, see subsidies 2026), long service life. Disadvantages: investment of €20,000 to €35,000 before subsidies, space required for storage (around 6 to 10 cubic metres for a family home), maintenance by a specialist company.
The comparison at a glance
| Pellet stove | Pellet boiler | |
|---|---|---|
| Supplies | one room (water-bearing: support) | whole house + hot water |
| Output | 4–10 kW | 8–30 kW |
| Purchase cost | €2,500–6,000 | €20,000–35,000 |
| Subsidy | water-bearing only | up to 80 % |
| Fuel feed | by hand, bagged | automatic, bulk or bagged into store |
| Pellet demand, family home | 0.5–1.5 t/year (supplementary heating) | 3–6 t/year |
| Visible flame | yes | no |
Which pellets for which system?
Both need certified pellets – ENplus® A1 or DINplus. The difference lies in the logistics: the stove is filled from the 15 kg bag, the boiler either in bulk by silo truck or – especially with smaller stores and at the start of the season – from bagged goods on a pallet. One pallet of HEIZFUXX® pellets (66 bags, just under a tonne) lasts a pellet stove one to two winters, or a boiler one to two months of the core season.
Important for both: fines. Dust in the bag clogs augers and increases emissions. Our pellets are screened before packing; how to recognise good pellets is shown in the quality guide.
Decision aid
- You only want to complement the existing gas or heat pump heating and see a fire in the evening: pellet stove.
- You want to noticeably reduce heating costs and support the main heating without rebuilding the cellar: water-bearing pellet stove.
- You are replacing an oil or gas heating system and want to heat with wood permanently: pellet boiler – with subsidies.
Conclusion
Pellet stove and pellet boiler are not competitors but answers to different questions. The stove brings warmth and atmosphere to a room, the boiler replaces the heating. Both reward good pellets with clean combustion and little maintenance.
HEIZFUXX® · SIMPLE. CLEVER. HEATING.
Wood pellets, wood briquettes, firewood, kindling, peat briquettes and hard coal – by the bag at DIY stores, by the pallet online. Where to get HEIZFUXX®.