I bought this opener hoping that it would last many years. Many years turned out to be two years. It was very quite but slow to open. Also if you wanted to stop the door and put it down it doesn't allow you to do so. You have to let it slowly go all the way up then slowly go down. For the hefty price I expected much more. Today the gears stopped working. They say a lifetime warranty but not willing to jump thru all the hoops plus shipping, original receipts etc. I have a 15 year old Lift master,$100, and it's still going. Went and bought a Chamberlin today for $200 rather than wait on a possible warranty. When I bought the Sommer parts were missing and the instructions were in German, not English.