Product review (1 stars): big mistake
I reviewed ranges for weeks before settling on the Thermador Pro Harmony.  At the time, other ranges had even more complaints than this one so I settled.  What a mistake.  We have now had it for two years.  The internal thermostat never works, so in addition to spending thousands on this range, I had to buy a $20 thermometer to check the temps.  Result:  this oven wavers from 5 to 20 degrees from what you set it at!  Not a big deal when cooking perhaps, but spells disaster if you are baking!  In addition, the outside gauge for setting the temperature very easily moves -- meaning you can walk by and the accidentally brush the dial and not know it.  I would prefer a dial that "clicks" and locks into place.  Next:  it is LOUD!  The vent is so loud as to interfere with conversation within a 10 foot space.  And if you don't open the door to cool it after you turn it off, you hear it for a good 20 minutes.  Finally, can they not add a timer on an appliance that costs this much?  In addition to spending money to confirm that that internal temps were unreliable, I had to purchase a timer (a necessity for a baker).  The ONLY thing I like about this range is the fact that I could choose to put a griddle in the middle.  I would never purchase a Thermador range.  Don't do it -- you'll regret it.