Product review (1 stars): Problems with the buttons.
This unit uses the same buttons as the unit below.

 purchased this unit from a local store about four years ago when I purchased a Thermador duel fuel stove.  The finish was alright, but the engineering was very poor.  Although it is not the top of the line hood, for 700.00, I expect it to work properly.  Within the first year, some of the buttons, there are four, started to pop off when I turned it up or down.  The fan speed and lights are controlled by metal (Chrome, not stainless steel) push buttons.  Unfortunately, the push button subassembly (plastic prongs) that receive the metal buttons are a different shape than the inside of the buttons.  So essentially, and quite literally, you have a square peg going into a round hole.  Over time, they loosen and no longer grip the buttons.  I know this, because I kept the subassembly, after I had the appliance repairman, put in a new assembly for close to 300.00.  Now, after another two years, the second unit is failing.  Another poor design element is the lights.  To replace them, you need to use a star key bit and hope that you do not loose the screws as you are taking them out of what feels like flimsy sheet metal.  So, you always need a tool to change the lights.  I have fat fingers and fitting the bulb into the socket feels like playing a game of operation.  I do not plan to throw good money after bad again.  I failed to mention that when this happened the first time, just out of the one year warranty, Thermador offered to sell me the replacement part at a 10% discount.  A very generous offer indeed.  Did I mention the stove (4500.00),  I had a circuit board go out on it the first six months.  The repair was 600.00, but the factory warranty covered it.  I also had a burner issue that required a repair the first month and have had a couple other small issues.  It cooks fine and looks great, but I expect more for an appliance that costs this much.