Chimney pots are an integral part of a chimney system. They are the vertical oblong structures that protrude from the top of a chimney's brickwork. They are used to prevent wind blowing smoke back into the household and to increase the efficiency of a fire by creating a draft. There are many synonyms for chimney pots, including chimney flue caps, chimney extensions, chimney cowls, and chimney pipes. These different terms are used to describe the same thing, which is a structure that fits over the top of a chimney to help with the ventilation process. Regardless of what they're called, chimney pots are essential for proper chimney function.