I have a 2-storey half duplex that was built in 2008. The kitchen (1st floor) has a range hood fan that exhausts to the side of the house through 8" aluminum duct. The outside vent is not directly above the wall where the range hood is, but on a wall perpendicular to it. The vent duct goes up, then right, then right again and then out, about 4 or so meters total. Walls are drywall.
My question is whether I can retrofit an external vent (link below) as the current hood fan is very loud. There is no electrical anywhere around the outlet where the external fan would have to go. The question is whether running the wiring from the kitchen through the aluminum duct is a crazy idea?
I'm thinking that if I insulate the wire properly and bundle it up I can send it through the aluminum duct to the outside fan. Would this pose any risks?
This is the external vent I'm looking to use.