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Pellet heating and pellet stove: installation, maintenance, promotion and costs
Pellet heating and pellet stove: installation, maintenance, promotion and costs
Video: Pellet heating and pellet stove: installation, maintenance, promotion and costs
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In contrast to oil heaters, a pellet heater burns a renewable raw material: wood. If you decide to install a pellet stove, in addition to relieving your conscience - at least in the long run - also relieving your wallet. We give you tips on installation and maintenance and reveal how you can reduce costs through funding.

Table of contents Table of contents pellet heating: Environmentally friendly alternative to oil and gas

  • What is pellet heating?
  • The central pellet heating
  • Pellet stove as a cozy eye-catcher
  • How comfortable are pellet heaters?
  • Pay attention to the fuel quality of the pellets
  • Funding for environmentally friendly heating technology

Table of contents Table of contents pellet heating: Environmentally friendly alternative to oil and gas

  • What is pellet heating?
  • The central pellet heating
  • Pellet stove as a cozy eye-catcher
  • How comfortable are pellet heaters?
  • Pay attention to the fuel quality of the pellets
  • Funding for environmentally friendly heating technology

What is pellet heating?

Are you planning a heating system as a builder or modernizer? Then you should also consider new types of heating - for example a pellet heating. In terms of comfort, it is on par with an oil or gas boiler. Although the purchase is somewhat more expensive, the federal government promotes the installation of this environmentally friendly heating technology. In addition, pellets are significantly cheaper to buy than oil or gas, so that pellet heating is really worthwhile in the long term - and you also do something good for the environment.

The ecological profile of the wood pellets could say: domestic, regenerative and almost CO 2 neutral. They burn with particularly low emissions in modern, automatic combustion plants. Not a single tree is felled for the wood pellets. Because the cylindrical compacts are a waste product of the woodworking industry. Dry, natural residual wood, mostly sawdust and shavings, is the raw material. Pellets are pressed under high pressure and have an extremely low water content. The compacts are processed without chemical binders. Pellets are available directly from the manufacturer or from the fuel trade. The consumption is around two kilograms of pellets compared to one liter of heating oil.

Here you will find heating experts in your area who will be happy to advise you on installation or replacement:

The central pellet heating

One- and two-family houses can be heated with a central pellet heating. Low-emission and energy-efficient pellet boilers bear the "Blue Angel" environmental label. Central pellet heating systems are installed in the boiler room of a building. A screw conveyor or suction discharge supply the boiler with pellets from a storage room or a tank fully automatically. The warehouse should be so large that - similar to an oil tank - it only needs to be refilled once a year. The pellets are delivered by pellet tanker.

Pellet heaters are controlled fully automatically. The pellets are ignited electrically. A combination of the pellet boiler with a hot water tank makes sense, especially since a thermal solar system can then also be integrated into the heating system. Various combination solutions are also on the market, for example pellet boilers, in which logs or wood chips can be burned.

When converting from an oil to a pellet heating, for example, the following questions should be clarified in advance:

  • Is the storage room enough?
  • Can the oil tank continue to be used?
  • Does the chimney need to be renovated?

Pellet stove as a cozy eye-catcher

If you only want to heat individual living rooms or are looking for a combination with other heating systems, such as solar panels, you can use a pellet primary stove. Like conventional stoves, these are installed directly in the living room of the house.

Stylish pellet stoves are not only attractive, they can also be operated comfortably, environmentally friendly, safely and inexpensively. In combination with thermal solar systems and controlled ventilation systems, a pellet primary stove can even be used to achieve a CO 2 -neutral heating system solution for a one- or two-family house - which is particularly attractive for a low-energy house.

Stoves that are heated with pellets have a small storage container that is separated from the combustion chamber and from which the pellets are automatically transported into the combustion chamber. There they burn behind a window. A burning time of 24 to 100 hours is possible. The supply can also be replenished by hand during heating operation.

Pelletheizung
Pelletheizung

This pellet stove in a classic design is only 80 cm high and already has a smoke outlet.

How comfortable are pellet heaters?

Comfort and maintenance

In terms of comfort, pellet heating is in no way inferior to conventional oil central heating. However, the occasional ash disposal and regular cleaning of the heating surfaces must be taken into account. The latter is also possible automatically if somewhat higher investments are accepted. Our tip: Just let your district chimney sweep show you example systems in your area and talk to them about the different options.

Storage of the wood pellets

The wood pellets are stored in a storage room, for example the former oil tank room, in bag silos or in an underground tank. The tank room is usually sufficient as storage space in buildings that were previously heated with oil heating. If a new building with pellet heating is planned, it can be dimensioned according to the heat output according to a rule of thumb with about 0.9 square meters per kilowatt of heat output. An inclined floor at around 45 degrees to the extraction screw ensures that the warehouse is completely emptied.

Tip: If you already think about buying fuel for the next heating season in summer, you can save money - the savings potential is up to ten percent. A kilowatt hour of heat generated with pellets currently costs 4.9 cents and is therefore over 40 percent cheaper than energy from heating oil. Although wood pellets have generally been at a much lower price level than fossil fuels for years, the price advantage is particularly pronounced in summer. This is due to the fact that the availability of the raw material wood - and thus also the sawdust used for pellet production - is particularly high in the warm season. Retailers also like to empty their warehouses in the summer months. Experts therefore advise you to take advantage of the cheap summer tariffs to meet the annual pellet requirements.

Pelletschweinchen
Pelletschweinchen

If you buy pellets in summer, you can save up to ten percent.

Photo: Depi

Pay attention to the fuel quality of the pellets

“In addition to the price, however, the quality of the fuel should also be important. Then maximum efficiency and smooth heating operation are guaranteed,”says Martin Bentele, graduate in forestry, managing director of the Deutsches Pelletinstitut GmbH (DEPI). “Consumers should make absolutely sure that their fuel bears the ENplus seal. This is the only way to ensure maximum quality that exceeds the requirements of the European standard. Because this symbol is the only one that guarantees consistently high standards, from pellet production and trade to delivery to the customer.”Incidentally, ENplus pellets are therefore not more expensive. Consumers will find the seal on the packaging for sacks and on the invoice for tanker deliveries. Fuel dealers who are allowed to sell ENplus-certified pellets can be found online.

Funding for environmentally friendly heating technology

How expensive is pellet heating really? Overall, the investment for a pellet heating system is currently higher than that for an oil central heating system - which for many seems a little daunting at first. However, the Federal Government supports the installation of a pellet central heating boiler with grants of 80 euros per kilowatt of installed heating capacity (market incentive program for renewable energies).

The investment grant was last increased in 2017, so that a grant of 3, 000 euros can now be applied for pellet boilers. If a buffer storage is added, even 3, 500 euros. Private builders and property developers are eligible for funding. Only systems with particularly low-pollutant and efficient combustion are funded. In combination boilers, proof must be provided that the boiler is mainly operated with pellets. The application for funding must be submitted to the Federal Office of Economics and Export Control (BAFA) before purchasing the boiler.

In addition, the Federal Government provides low-interest loans for energy-efficient refurbishment through the Kreditanstalt für Wiederaufbau (KfW).

Eva Bolta Redaktion Haus.de

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