🔥 Firewood Heat Values – The Best Choice for Dry Wood

Want to heat efficiently, economically and eco‑friendly?
Here’s Tammaru Farm’s overview of wood species heat values,
heating appliance efficiency and practical fireplace tips.

🌲 Heat Values – Wood Moisture Below 20%

Choosing the right firewood is key for efficient and eco‑friendly heating.
Table of heat values and energy content:
Wood kWh/kg | kWh/loose m³ | kWh/stacked m³
Birch       – 4.15 – 1010 – 1700
Pine        – 4.15 – 810 – 1360
Spruce    – 4.10 – 790 – 1320
Alder       – 4.05 – 740 – 1230
Aspen      – 4.00 – 790 – 1330
💡 Maximum heat value is achieved when wood moisture is below 20%.

🔧 Heating Appliance Efficiency

• Open fireplace: < 30%
• Modern fireplace: 80–85%
• Stove, oven: 50–70%

🌍 Eco‑Friendliness of Burning Wood

Wood is a CO₂‑neutral fuel. Particulate emissions can be reduced by using dry wood,
proper top‑lighting and adequate air supply.

🪵 Fireplace Heating Tips

• Use dry firewood – bring indoors 1–2 days before heating
• Open the fireplace damper before lighting
• Empty ash pan when full
• Stack logs with air gaps (at least 1/3 of firebox height free)
• Light from the top using kindling
• Add logs only when previous ones are nearly burnt
• Close damper only after embers have darkened

📏 Firewood Quantity for Full Heating

General rule: 1 kg firewood per 100 kg fireplace mass.
Example: fireplace 1500 kg → 15 kg firewood.
• Measure needed amount before heating
• Stack with air gaps for better combustion

📦 Order Dry Firewood from Tammaru Farm

• Quality wood with tested moisture content
• Fast delivery to multiple Estonian regions
• Friendly service and correct quantity advice

👉 See dry firewood price list and place your order today