how to range hoods work
Most residential range hoods, if correctly installed, remove smoke, odor, and heat from the kitchen. To draw out cooking grease, you need a powerful commercial model. For the best range hood efficiency, run the duct through the wall directly behind the range hood, in as straight a line as possible. You can run the vents of most hoods out the back or the top of the unit. If a wall stud is in the way of the ductwork, you could do carpentry work to change the framing. Or purchase a hood with an extra-strong motor and run the duct around the stud.