Sandtab,
We are using a Thermador downdraft with some Cooktek double hobs and had to have a filler made between the cooktops and the downdraft. It is designed for an electric cooktop that indexes into the front of downdraft and the magnetic induction units need free space around them.

Thanks for the information. I had factored in that I might need extra depth in the counter to accommodate a downdraft so I should be OK with the Thermador then.

I have the Thermador 30 inch induction cooktop and the Thermador 14 inch tall retractable downdraft unit on order. I was never told anything about induction cooktops needing extra free space around them. My cooktop and vent will need to fit into a 30 inch wide and 25 inch deep cabinet in my center island. I had the install crew come out specifically to make sure I had the space to fit both units in. Other than needing to upgrade to a 40 amp circuit, they did not see any other installation issues. I would like to know more though about this need for more space around the induction units. I am planning to have the downdraft unit placed at the top of the cooktop and there won't be much additional space available.

lmalm53 - induction cooktops need space to vent heat or the electronics will burn out - the installation specs for your cooktop should have the required amount of room you need - there have been postings on this forum from people who fried their induction cooktops because they didn't leave enough room or have the proper openings.

Thanks Weissman. I will double check my installation specs. I know I have plenty of room in the cabinet underneath the cooktop but it will be a tight fit on all sides. I know it does require installation of a metal heat shield at the front of the top which is to assist in pulling cool air through from the front and blowing the warmer air out the back. Hopefully, I will have the required space so it is safe to use.