Wood in order of . . .
Heat content per Kg
Wood
Species
|
Heat Content
kWh/kg
|
Density
kg/m3
|
% of Moisture when green
|
Years
to season
|
Oak
|
4.5
|
770
|
50
|
2-3
|
Beech
|
4.3
|
690
|
45
|
1-2
|
Ash
|
4.1
|
674
|
35
|
1
|
Birch
|
4.1
|
662
|
45
|
1
|
Elm
|
3.6
|
540
|
60
|
2-3
|
Poplar
|
2.6
|
465
|
65
|
1
|
Pine/fir
|
2.6
|
410
|
60
|
1
|
Above you will find a table that shows oak has the best heat output per kg but it also takes the longest time to season taking up to 3 years to fully season.
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______________________________This article was written by Jim Chim-in-ey,
An insurance approved chimney sweep
JC sweeps all open fires, wood burners and stoves.
Covering Bournemouth, Poole, Blandford Forum and Dorset.