2 hours ago, KennethT said:I don't know if it's a NYC code or if it varies by building. I know my building allows it for some apartments (those with a window in the kitchen also have an exhaust in the plans - but I've only seen the plans, not the apt) but most apartments in the building (whose kitchen does not have access to a window wall) must have a recirculating fan with carbon filter.
Many areas' building codes require make-up air for kitchen exhaust, something like over 600 CFM.
dcarch