Gas Fireplace Flue Size

How to determine proper flue size.

Gas fireplace flue size.

As a general rule the diameter of the chimney should match the flue collar on your wood stove. Stoves fireplaces central heaters. 8 1 2 x 13. The size of your flue vent connector or flue pipe needed depends on several variables including.

The size and input btuh of each of the appliances being vented the size of the flue vent connector on each of those appliances this will be the bare minimum and is typically the size of the vertical flue vent connector between the appliance. In general your should use the same size chimney diameter as the flue collar on your stove i e. Fireplace flue size specifications relation of fireplace size to flue opening dimensions table of required chimney flue size and flue dimensions for masonry fireplaces. A 6 inch stove requires a 6 inch flue.

In most cases a step up is also fine. As a general rule of thumb the area of a. This article series provides information about masonry fireplaces. Improper flue sizes are a leading cause of poorly drafting fires.

A 6 stove should use a 6 chimney or a 7 1 2 x 7 1 2 flue tile. The way wood stoves and fireplaces work a correct match on fitting the flue size to the appliance is a must. 8 1 2 x 8 1 2. A flue that is too small won t allow the fireplace gases to exhaust properly and a flue that is too large will be cool down too quickly causing condensation and creosote buildup within the flue.

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. Outside diameter inches inside area square inches 7 1 2 x 7 1 2.