Step 1: Decide the style of your cooker hood:wall mount or under cabinet.
Step 2: Measure the width of the location where you plan to install the cooker hood. And then, use the measurement to choose the appropriate cooker hood.
Step 3:Determine whether you need a chimney or not. Most cooker hood installations require a distance of 660mm to 740mm between the bottom of the hood and the cooking surface. To determine if you need chimneys or not, simply measure the distance from the cooking surface to the ceiling and then minus the 650mm to 750mm distance, and subtract the height of the hood itself. That is the distance in which you 'll need to install chimneys.