Abstract: An apparatus for cleaning chimneys from a position at the bottom thereof comprising a brush cleaning member and a self-contained pulley system whereby the entire apparatus climbs the chimney from bottom to top in a stepwise fashion due to the actuation of two sets of retracting legs thereby cleaning the entire length of the chimney. The apparatus may be used to interchangeably accomodate different size brushes and legs so that various chimney and flue sizes and shapes can be cleaned.