Best Ductless Chimneys In India A kitchen chimney is a great way to keep smoke, heat, odours, and other undesirable particles out of the kitchen. Kitchen chimneys are classified as ducted or ductless depending on how they work. The greatest ductless chimney is contemporary, fashionable, and simple to install. Unlike their ducted counterparts, ductless chimneys filter out fumes, airborne greases, ...