PINI KAY Wood Briquette

Firewood calorific value groups
Firewood group Calorific value (kcal) Heat energy (KW)
Group I: Ash, Oak, Birch 2250 – 2500 2,65 – 2,93
Group II: Pine, Alder 1800 – 1900 2,15 – 2,21
Group III: Fir, Aspen 1500 – 1700 1,87 – 2,10
On the basis of density, the firewood species have their unique features. 1st group firewood burns at highest temperature and it is most suitable for house heating in bigger boilers. For the Barbeque fireplace or Sauna, the most suitable is Birch. The 3rd group firewood is burning at relatively low temperature; therefore it is safer for smaller furnaces to protect from cracking the chimney walls.