$800-$8000. It depends on the obstacles in your way. And no one can know that but an in home general contractor. It will involve HVAC, but it sldo involves electrical, roofing, siding, cabinet alterations, and potentially even more.

We just resolved our hood venting issue ourselves. If we had purchased the fan insert from the local appliance store we could have arranged installation through them. But, because we didn’t, they couldn’t. We called our furnace guys. They came out and advised, but we’re not experienced with that ducting. I think they would have agreed to do the job if we hadn’t done it, but we had few options. I hope you know some handy friends. BTW, the guys at Broan tech help are really great. Whatever brand you have, I’m sure you can find assistance from them as well. We discovered obstacles in our planned route and ended up hiding it into cabinetry in the room behind the stove.