It is one thing to retrofit a range hood in a single family building with the stove against an outside wall. Conditions will often be more difficult than that. How do you retrofit a range hood into an apartment in a multi-storey building? In a house, what happens if the kitchen is set up to have the cooking surfaces against an inner wall? We have considered suggestions such as tying the range hood ducting into existing exhaust ducting (e.g. a large bathroom fan) or running ducting through a basement under the kitchen.
Have you installed or seen a retrofit such as this and what solutions seem to have worked?