Going from 6" to 10" duct
This is a cross-post from remodeling as I am not sure where it belongs.
And I have honestly searched but couldn't find an answer to this question.
I have an under-the-ceiling vent box over the cooktop in the kitchen. An electrician went to the attic and told me that its duct was 6" round which was transitioned to a 10" duct in the attic (and is 10" all the way going to the roof).
I want to get a real range hood. Unfortunately, it requires an 10" duct (or 8" at the very least, depednding on the model). How hard would it be to make it all 10", provided that the attic is totally accessible and there are no obstacles?
And I don't mean using reducers or transitioners, but physically changing the duct size.
Isn't it just cutting a larger hole and replacing that section of the duct pipe between the ceiling and the point where it is already 10"?
How much it would cost in your area? Again, assuming no obstacles.
And yes, I know that YMMV.