heat pumps can easily handle your ducts. However, heat pumps designed to work with minisplits, which are non-ducted and do not use a return ... not so much. It

heat pumps can easily handle your ducts. However, heat pumps designed to work with minisplits, which are non-ducted and do not use a return ... not so much. It is non-trivial to get the sort of heat pump you would need to retain your ducted system and have it work well, because very few people are going down this path.