Your equipment Boiler Coal-fired heater Open or closed fireplace room sealed boiler Ventilation Your need gas oil - wood creation of a chimney Flue   Therminox TI/ZI Dualis range Dualis 3CE   Chimney top   Tradinov, Régionales, Polyvalente   Lining an existing straight chimney Condensor Tubaginox SL   Lining an existing offset chimney Tubaginox flexible flues   Reducer and connection to boiler Condensor Tubaginox SL Kitalu Ventil-alu Optimizing the chimney draught Aspirotor Reducing noise level Silencer Phoni-alu Flexalu acoustique Optimizing your fireplace   Warm air distribution Flexalu Flexalu thermique