A conduit or barrier installed inside a chimney is designed to protect its structure and improve the performance of heating appliances. It provides a safe passage for exhaust gases, preventing them from leaking into the living space or damaging the chimney’s masonry. For instance, when upgrading from an older, less efficient furnace to a modern, high-efficiency model, a correctly sized component of this type is often essential to accommodate the different exhaust characteristics.
The presence of this protective element is critically important for several reasons. It protects the chimney from the corrosive effects of combustion byproducts, like creosote in wood-burning systems or acidic condensation from gas appliances. By containing the exhaust gases, it prevents carbon monoxide from seeping into the home, which is a significant safety hazard. Furthermore, a properly fitted one helps optimize the draft, ensuring efficient venting and improved heating system performance. Historically, advancements in heating technology have necessitated improved designs to handle the varying temperatures and chemical compositions of exhaust gases.
