Furnace Chimney Installation

Different Types of Liners

• When the products of combustion from a furnace are vented through the chimney built with the home, a flexible liner can be dropped down the chimney to connect to the furnace. Rigid venting can also be used and is available in aluminum and stainless steel. If the chimney is not usable, a new venting chimney can be places along the exterior wall that runs up the house to allow for proper venting.

Benefits

• Flexible liners allow for quicker installation and sometimes are the only option when using an existing brick chimney. Bends throughout the existing chimney may be difficult to maneuver around with solid venting materials. Stainless steel liners are better suited for hot flue gases from wood or oil burning furnaces than aluminum liners. When running the vent along the outside wall of the house, check local codes to see if rigid venting must be used.

Cost

• Rigid vent is less expensive than flexible venting because part of what is purchased is the convenience of the flexible liner. For rigid liners, aluminum is less costly than stainless steel. Building a brick chimney will cost the most and code will require that some type of liner is installed within the chimney.