Chimney Liner Calculator

Condensation will form on the cold inner liner of the vent.

Chimney liner calculator.

To determine the area in a square or rectangular pipe just multiply the length by the depth. In a few simple steps you ll be able to see your options for chimney liner size and type. For example a liner that is 6 x 10 would be 6 x 10 60 of area. For the fireplace above that needs 108 of area this liner would be way too small.

But chimney experts and draft measurements show that in a rectangular flue not all of the cross sectional area is equally effective in developing draft. Average cost of chimney liner installation the average cost of a stainless steel chimney liner is around 1 980 when installed by a local chimney professional. Use this tool to quickly calculate flue diameter or btu s for single or multiple category 1 appliance venting. Rigid 304l chimney liner rigid 316l chimney liner single wall black stove pipe double wall black stove pipe metalbestos class a chimney pipe rock vent class a chimney pipe 316l inner 430 outer rock vent class a chimney pipe 304l inner galvalume outer rock vent class a.

Choose the type of appliance you have measure the exhaust collar of the appliance. Density of gases at the inlet of the chimney flue gases density at the inlet of the chimney is dependent upon the temperature. A cross sectional area of chimney m 2 q volume of flue gases at chimney temperature m 3 s v velocity m s in general 1 kw boiler heat requires 1100 mm 2 of chimney area. Chimney liner and flue pipe length calculator select pipe or liner type.

A q v 3 where. For do it yourself homeowners expect to pay around 625 for a ready to install 6 x 25 foot flue liner kit and diy installation. Chimney vent capacity chart btu h and kw pdf. A liner size of 9 x 12 would equal 108 and should just provide enough draft for the above fireplace.

If the vent is located outdoors and the temperature is very low condensation may continue. For single category 1 appliance. Before it develops to drop size the liner will have been heated above the dew point and this condensate will reevaporate. Chimney liner size calculator and selection guide this handy guide is provided to assist you in choosing the right size and type of chimney liner for your home.

Required chimney area can be calculated as. For example an 8 x 8 square nominal clay chimney flue tile liner has inside dimensions of 6 3 4 x 6 3 4. Just muliplying these dimensions together 6 75 x 6 75 45 56 sq in. This is a good reason for avoiding this type of installation.

Chimney draft is required to draw the flue gases from the system and in order to prevent the backflow of gases the draft generated by chimney must be calculated accurately chimney draft depends on the following factors as mentioned below. Chimney vent capacity chart btu h and kw.