Burning wood produces environmental impacts. That is why it must be done responsibly. Responsible wood heating should be defended from criticism that it is bad for the environment. In fact it should be promoted on environmental grounds.
When we talk about the impact of wood burning on the environment we should consider three distinct forms of impact:
Burn sustainably harvested, properly processed and seasoned fuel in an advanced combustion stove or fireplace that is vented through a chimney that runs straight up through the building.
It sounds so simple, but as you can imagine, there are some complex issues and layers of meaning under the surface of the words. Here is a brief explanation.
Properly processed wood is cut to the correct length and split to the correct range of sizes for the appliance. Having wood the right length and range of size makes it easy to build good, clean burning fires.
Properly seasoned fuel is split and stacked in an area open to sun and wind for between six and twelve months, depending on how hard the wood is, how large the pieces are and how dry the climate is. You cannot burn without smoke if you are using wet wood.
Sustainable harvesting involves selective, uneven age cutting so that an acceptable level of biomass and biodiversity is maintained permanently on the site.
Advanced combustion stoves and fireplaces burn wood about 90 per cent cleaner and one-third more efficiently than older conventional appliances. That means a lot less smoke outside and lower forest impacts because less wood is used. And there is a bonus: The same advanced appliance characteristics that result in lower outdoor emissions also result in less chance that smoke will be spilled inside the house.
The chimney should run inside the house because if it runs up an outside wall there is a good chance that smoke, odors and cold air will flow backwards into the house, polluting the indoor air.
Although there has been a tradition in rural areas of burning garbage in backyard barrels and in wood burning heaters, it is now apparent that when you burn garbage, you're making poison.
We should all be working towards environmentally appropriate wood heating. Marlene, a wood burner and one of our visitors, sent us a copy of an article she wrote for her local community newspaper. "Hey Neighbour" is a wonderful contribution to the dialogue on responsible wood heating. Congratulations to Marlene for making a difference in her community. Maybe you could also promote responsible wood heating in your community.
You will find several articles here that go into plenty of detail on the environmental impacts of wood heating.
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