Reply To: Neighbor’s rangehood ducted into building air ventilation › Forums › Common Property › Neighbor’s rangehood ducted into building air ventilation › Current Page 14/01/2021 at 4:31 pm #53927 unitapplianceFlatchatter That is very inconsiderate of him/her, you can file a complaint to the building manager its your right. Rangehood supposed to have its own air duct.