What are wood pellets?

The wood pellets we use are an environmentally-friendly fuel, produced from managed resources. The sawdust is compressed into small, dense cylindrical pellets with very low moisture content which deliver high efficiency combustion when burnt.

Using pellets which do not meet the EN Plus A1 specification from an unapproved supplier will invalidate your boiler warranty. If you are in any doubt, please contact us before purchasing your pellets.

Our Wood Pellet boilers can only be used with 6mm approved EN Plus A1 pellets with attributes as follows:

  • Moisture content below 10%
  • Calorific value of 4.8 – 5.2 kWh/kg
  • Ash content of < 1% (Low)
  • Bulk density of around 650kg/m3
  • Chlorine content of 0.03% or less
  • No additives
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Renewable Fuel

Our pellet sawdust is a waste product from sawmill industries, or is sourced from managed forests (where trees are planted to replace the ones cut down). This ensures that wood pellets are classed as a renewable carbon neutral source of fuel.

 

How are pellets delivered

Wood pellets can be bought in bags of various sizes or alternatively they can be delivered in bulk by tanker (around one to five tonnes at a time). Buying pellets in bulk is the most cost effective option.

Percentage Fuel Cost Savings – Wood Pellets v Oil

Assuming same efficiency for Wood Pellet and Oil fired boilers.

Wood Pellet Cost (£/tonne) – including delivery charge
Oil Cost (p/litre) 180 190 200 210 220 230 240 250
80 55.5 53.0 50.5 48.0 45.6 43.1 40.6 38.1
75 52.5 49.9 47.2 44.6 41.9 39.3 36.7 34.0
70 49.1 46.3 43.4 40.6 37.8 35.0 32.1 29.3
65 45.2 42.1 39.1 36.0 33.0 30.0 26.9 23.9
60 40.6 37.3 34.0 30.7 27.4 24.1 20.8 17.5
55 35.2 31.6 28.0 24.4 20.8 17.2 13.6 10.0
50 28.7 24.8 20.8 16.9 12.9 8.9 5.0 1.0
45 20.8 16.4 12.0 7.6 3.2 -1.2 -5.6 -10.0
40 10.9 6.0 1.0 -3.9 -8.9 -13.8 -18.8 -23.7

The Carbon Cycle

When trees grow they absorb atmospheric carbon dioxide. During the burning or wood this carbon dioxide is released back into the atmosphere. In essence, this results in no net increase in the level of atmospheric C02 as if the tree was to die naturally it would still break down and thus eventually release the same amount of C02 back into the atmosphere.

The burning of wood pellets just speeds up this process. It is more commonly known as the Carbon Cycle (shown on the right).

Learn more about wood pellets

Intelligent Heating Solutions Carbon Cycle