Welcome to FlueCalc

Welcome to the AWARD WINNING automatic flue/chimney design and quotation software. This software is totally FREE and used specifically for Class 1 chimneys used on stoves and open fires using wood and solid fuels such as coal and smokeless fuel.

FLUECALC allows you to input some simple dimensions, giving you an immediate design and price on the pre-fabricated, twin wall insulated flue products needed to complete a full installation in accordance with building regulations — specifically Document J. It also includes connecting flue pipes and all necessary support components.

Getting a quote is as easy as…


Select a flue system image


Enter your measurements


Obtain your quote