Natwerk Designs

What is the best way to install a kitchen exhaust duct?

I own a 2-story town house which connect with other unit on both side. The kitche has a unvented hood, I like to install exhaust duct to exhaust the air to outdoor. The kitchen is in the front part of the house conncected with the garage. On top of the kitchen on the 2nd floor is the utility room and bath room. Does the duct has to go through the roof? or can I connect the duct to the existing dryer duct or heating duct? What will be the best and most economy way to do this?

Public Comments

1. Do not connect a new duct to any existing duct. It is always better to go through a wall than through the roof, because keeping watertight integrity of a roof is invariably a problem. If you can run it out near where the dryer vent comes out, that could work well. You need to consider the routing carefully so as to avoid beams, plumbing, wiring, and the other stuff that can get in the way. But the most important thing to do is to talk to the manager of the homeowner's association, since penetrating an exterior wall will probably get the HA into the act.