Gas Fireplace Flue Design

A flue is a vertical pipe that exhausts the gases naturally by drawing them upward and out of the home through the roof.

Gas fireplace flue design.

Area flue size and chimney height. A traditional gas fireplace uses indoor air for combustion. Unlike traditional masonry fireplaces most factory built fireplaces are metal and come from the factory as complete units with a firebox a specific chimney system and all miscellaneous parts. Fireplace flue size specifications relation of fireplace size to flue opening dimensions table of required chimney flue size and flue dimensions for masonry fireplaces.

Though designs vary many common patterns have emerged through experience with successful fireplaces. It takes air from inside the home to burn natural gas or propane and sends the fumes up a flue. Straying too far from accepted practices may result in a fireplace that burns poorly or fails to conform to building codes. Sizing the opening determining the size for a fire.

To provide adequate draft and safe venting of combustion products the chimney flue for a fireplace has to be adequate in size or cross sectional area. Ventless fireplaces are standalone structures that function off natural gas propane alcohol based gels or electricity but do not require a vent or open chimney flue to heat a room like. Prefabricated fireplaces factory built or prefabricated fireplaces are relative newcomers to the fireplace scene.