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Granules are now widely used in stoves and even in closed fireplaces or inserts. But is it interesting to use them to power a boiler? Is the transition from gas or fuel to pellets interesting? Is it really economical and technically possible without modifying the existing installation?

Replace an oil or gas burner with a pellet burner

Are the pellet burners adaptable to an oil or gas boiler reliable? Are they as good as those originally mounted? Is the operation profitable?

On certain types of boiler, one can indeed replace a oil burner or gas by a pellet burner. Nevertheless, experience shows that the boiler, designed for fuel oil or gas, is not optimized for this transformation. It does not benefit from the electronic equipment of a pellet boiler. The automated feed is difficult to set up, space available right next to the boiler is not planned to set up a silo. The yield is good, but the operation is not very profitable, especially since this type of operation does not qualify for any tax credit. Attention also to the adaptation of the conduit if one wants to equip in this way a boiler with gas burner!

Pellet boiler for a big old house

We have a 15 year old oil / wood boiler. We consume between 4000 and 5000 liters of fuel / year for a stone house (old farm) of 270 m2. We thought of changing this system by a wood pellet boiler. Is this heating system appropriate for our house, knowing we are doing the right thing to insulate it and is it reliable over time because there is a lot of electronics?

Mixed fuel oil / wood boilers are perfectly developed. Some can be automated. However, these boilers are expensive to buy. There is still a contradiction in associating a fossil fuel (fuel oil) with a renewable fuel (wood). Replacing a boiler entirely with pellets should give you complete satisfaction. Prices, initially high, have dropped a lot. The electronics are reliable and some models work today even in case of power failure.
If the oil / wood boiler is still in good condition, it can also be kept and added to it air / water heat pump. The heat pump will operate optimally to outside temperatures of 5 to 7° C, with the boiler taking over for the lowest temperatures, where the efficiency of the heat pump is worse.
By addressing a qualified heating engineer and retaining quality equipment, this solution allows savings operating costs, as well as a relatively fast return on investment, normally less than 10 years.

Replace an oil boiler with a pellet boiler

What power to choose when buying a pellet boiler or wood to replace a boiler oil? What is the price of this investment? While knowing that we will use the current installation (radiators, pipes...). It is for a secondary house of about 100 m2 in Auvergne.

If you start on a moderately insulated house, well oriented (towards the South), it is necessary to count 20 kW for a boiler in heating alone and 25 to 35 kW for a boiler also ensuring the heating of the sanitary water. As for the price of the boiler alone, it goes from 8,000 to 15,000 €, knowing that you will be entitled to an energy bonus (but not a tax credit since it is not a main residence) subject to use an EGR company to purchase and install the boiler.

Choosing a pellet boiler for a construction project

Would the installation of a pellet boiler be a good solution for a house to be built in the 76? There will probably be underfloor heating. Which building materials to choose for this house? What is the best performance / quality / price / environmental respect for this region?

Monomur (multi-cellular) bricks, cellular concrete or wood framing are interesting construction methods, particularly in this region. For heating, the pellet boiler would be a very good choice, subject to a local sourcing close of this future house (the cost of transport can penalize this project). Even if a pellet boiler can quite be associated with a floor heating, the simplest would be to opt for radiators, whose installation will be less expensive than the realization of a heated floor.

Choose a pellet boiler to replace an old boiler

In order to heat a house in the rather insulated Toulouse area, is it worthwhile to install a pellet boiler? Are cereal or other boilers performing?

For a heating with new energies, the most serious solution, at the moment, seems to be the pellet boiler. The cereal (wheat-barley-oat) boiler is still not very common but may become of interest when fuel price stability is assured. But its yield is lower. In addition to some problems of corrosion, it poses an ethical problem: it may seem shocking to burn food! The pellet boiler is required for the moment because of its efficiency and convenience of use, the power being automated which is virtually impossible with a log boiler.

On the same topic

  • DIY tips
    • What to replace an old boiler?
    • How to install a multi-fuel boiler?
    • How does wood central heating work?
  • Questions answers
    • How to seal a hole in the bottom of an oil burner?
    • How to choose a type of foundation?
    • Can I replace a fuel burner with a pellet burner?

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