Have a Dacor downdraft with an induction cooktop. I had 32 inch depth to work with. 5 in at the back 23 inch cooktop and 4 inch in front. The downdraft only takes about 2.5 inch of depth. Used a remote blower system. Have 3 drawers under the cooktop with 21 in depth for the drawers.

Do you actually plan to cook with this cooktop? :) If so, how do you plan on handling the steam, grease, smoke, and odors that cooking produces?

The technology of applying heat to your food has little to do with the need for ventilation. It's the cooking byproducts that need to be vented---unless you like cleaning the grease off of your cabinets and smelling it in your fabrics through the rest of the home.

canuck I have a 24' deep counter..... do you know the minimum operating depth for the dacor vent?

live wire My cooktop is now on the island and I notice I seldom use it. Area has remained cleaner than when I used counter ranges. I guess it is all on my ceiling. I do have 9 foot ceilings if that makes a difference. I noticed that I have used my downdraft mostly for removing smoke when the alarm has gone off. I have not noticed any issues with odors either.

This is a recurring topic on this forum. Part is just the basic question of how important range ventilation is, and part relates to the commonly held (and IMHO incorrect) notion that because induction burners do not emit combustion gasses, that ventilation is not needed (or at least, not needed as much). Here's a recent thread that addressed this very issue:

Here is a link that might be useful: Do I really need an island range hood

Oud,

Go to Dacor.com and look up there downdraft systems. When coupled with the remote blower. The depth used is a function of how large and the orientation of your vent piping.

Just get over the range microwave if you want. As much as people here don't use them, they are common in most homes.

Check out the worlds only induction cooktop with integrated ventilation made by Western Premium www.westernpremium.com

Here is a link that might be useful: Western Premium Products