Your equipment Boiler Coal-fired heater Open or closed fireplace room sealed boiler Ventilation Your need gas oil  - wood Creation of a chimney Flue Therm-inox TI Therm-alu ZI Gas vent Type KG Therm-inox TI Therm-alu ZI Dualis range Dualis 3CE Chimney  top Tradinov, Régionales, Polyvalente Lining an existing straight chimney Condensor  CD-TF Condensor SL Lining an existing offset chimney Tubaginox  flexible flues Reducer  and connection to boiler Condensor  CD-TF Condensor 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