The efficiency of a stove rests on the combustion process.
If the stove requries specialist fuel, eg wood pellets, these must be of a certain moisture content.
In a cold country, leaving them outside for a while dries them to 14%, circa no matter what they arrive at.
In Ireland they can arrive at 14% but unless kept in a specially prepared space they can rise to 16-18% because of the dampness of our climate.
In fact, they can spontaneously combust due to this dampness and the heat generated by growing bacteria.
If you don;t beleive me about self combustion, do some research here.
http://onlinelibrary.wiley.com/doi/10.1002/fam.945/abstract (http://onlinelibrary.wiley.com/doi/1...m.945/abstract)
http://www.coolwex.com/fireplece-stove-on-wood-pellets/
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As you can see, self ignition is a known quantity.
Be careful of your fuel source, make sure the stove can run efficiently on whatever you choose and be careful of how and where you store it and how you burn it.
ONQ.
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All advice on AAM is remote from the situation and cannot be relied upon as a defence or support - in and of itself - should legal action be taken.
Competent legal and building professionals should be asked to advise in Real Life with rights to inspect and issue reports on the matters at hand.