I currently have a ductless over the range microwave. It's too close to the range. The heat from the range is melting the microwave handle. I want to remove the microwave and cabinet and replace it with range hood. I've already ordered 30" 900CFM hood. Problem is that there is no duct work at the moment and I have not done duct work before but I can't imagine it being that hard.
My situation is that right behind the kitchen is my sunroom so I can't use that route. Right Above the cabinet is the attic. Should I vent it through the roof or the side wall? If I vent through the roof, the distance between the ceiling and the roof will probably be 2-3 feet. If I use the side wall, I would need use a 90" elbow and from the elbow, the wall will be about 10 ft away. Here is the picture maybe there is another way that I can't think of? The sidewall I'm talking about is to the right of this picture. My Ceiling height is about 8ft.