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<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN
style="mso-ansi-language: EN-GB" lang=EN-GB><FONT size=3><FONT
face="Times New Roman"> The need of chimney or not is the
question. For closed rooms and kitchen with doors and windows and with biomas
stoves for heating or cooking, there is a need of chimney to protect the cooks
and people staying there against CO poisoning. For open air cooking or shelters
with good ventilation, there is no need of chimney with clean burning stoves
ignited on top or not. A chimney needs sweeping at least two times a year
whether it is made of bricks or metal. <SPAN
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<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN
style="mso-ansi-language: EN-GB" lang=EN-GB><FONT size=3><FONT
face="Times New Roman">Paal
W<o:p></o:p></FONT></FONT></SPAN></P></FONT></DIV></BODY></HTML>