Every fire and stove has an efficiency percentage. This is the percentage of heat coming into the room as opposed to being wasted and disappearing up the chimney. Horrifyingly, a traditional open fire is only about 20% efficient – 80% of the heat generated goes straight up the chimney. Even when your open fire is not lit it will still draw heat from wherever it can (radiators, other heaters etc.) and send it directly into the atmosphere above your home!
A stove or closed in fire is much more efficient. Woodburning and multi-fuel stoves have a percentage of up to about 80% efficiency. Gas stoves are up to about 86%.
New generations of clean burning stoves are much more efficient than those of the past. Now as never before, we are in a position to minimise our own carbon footprint through our choice of heating appliance.
As trees grow, they absorb carbon dioxide and generate oxygen. Healthy trees in well managed forests absorb three times the carbon dioxide than that generated during combustion; so ensuring the firewood you use is from a sustainable, well managed source (like ours!) reduces the need to burn fossil fuels and, when used in an efficient stove, provides warmth and comfort in our homes without damaging our environment.
Indeed, burning wood harvested from a well managed source is carbon neutral - as whether it is burned as a fuel or whether it decays where it falls in the forest – the same amount of carbon dioxide is released into the atmosphere, and the carbon dioxide released through combustion is also the same as that which will be absorbed when the coppiced tree re-grows.
Fossil fuels take many thousands of years to evolve and are being consumed faster than they can be replenished by nature, and their long term availability and thus how much they are going to cost us is incredibly concerning.
However, if you do already have an older gas fire and/or you like the convenience and look of a gas fire at home the best thing to do is to buy a fuel efficient gas fire. In doing so you will be minimising damage to the environment by choosing an appliance which wastes very little fuel, generates the maximum heat possible and saves money on your existing fuel bills.
Most woodburners are in fact multifuel stoves, they can burn coaal, solid fuel and in some case you can recyle suitable material. This means that you can take advantage of your particular circumstances and any fuel that is available. Any fuel that can rescued from landfill can only help the environment.