A system designed to increase the height of a chimney’s venting passage. These assemblies typically consist of multiple sections of metal pipe that connect to the existing flue, thereby elevating the outlet. For instance, a structure experiencing insufficient draft may benefit from the installation of such a device to improve its operational characteristics.
Proper chimney height is critical for efficient and safe combustion. Insufficient height can lead to poor draft, causing smoke to back up into the living space, increasing the risk of carbon monoxide poisoning and reducing heating appliance efficiency. Historically, chimney height has been addressed through various methods, with modern kits offering a standardized and relatively straightforward solution to these issues.