What is the chimney flue

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The chimney flue is a passageway from which flue gases leave the chimney. It may have a square, rectangular or circular cross-section. Chimneys often have more than one vent. In order for the vents to be fully functional, it is necessary to use high quality fuel that does not clog it. Even so, it is good to have the vents checked and cleaned at least once a year. And it does not matter whether it's a chimney in a family house or cottage.