Over all, extremely poor. First, they came in my front door while I was in powder room without waiting for me to answer the door. After they removed existing appliances, I wanted to clean crumbs,etc in area where oven was being replaced, and was told that it was not necessary and would take up too much time. I did it anyway and was told that "Jewish and Italian women always need to clean." I am a doctor, so I have a reliable level of intelligence. After he installed the oven, and pronounced it done , I asked about the large void at the bottom of the oven, and the left over pieces. It also seemed that the frame was bending, causing the control panal to warp. He insisted that it was an "optical illusion"! He said there were unnecessary trim pieces and that I'd have to call a carpenter to fill the hole. I read the directions for the installation and informed him that the leftover pieces were part of the vent assembly and needed to be installed on the bottom of the oven (where the void was) He said there was no place to screw that on, and could not figure out how the pieces went together. I read the directions and put the pieces together. I informed him that the instructions showed that the oven door needed to be removed first in order to attach the vent. He did not seem to want to do it, at first making it seem that the door could not be removed. Also, I told him that the oven was not flush with the cabinet, but he said that was the best it would fit because a pipe was in the way. I told him I would do what was necessary, such as have the pipe moved, even if that meant delaying the installation, but he said I could not move the pipe because it would be too costly. (untrue) I said it was not acceptable to have the oven sticking out 1/2 inch, it looked terrible....and it was crooked! He and his assistant removed the oven and cut off parts of the back of it, voiding the warranty, to make the oven fit flush, all the while warning me that this extra work was going to cost me more money. The microwave installation was worse!!! He would not use a level or a measuring tape, insisting that it was not necessary to center or level the mounting bracket or for the oven to be level. He and his assistant took a long time trying to figure out a way to force the oven to fit when it was clear to me that the bracket was not positioned correctly. He made rude sexist comments to me when I asked the oven be centered and level. They broke the mounting hardware on the appliance trying to force it! Again, I was warned of their hourly rate and was scolded for making them late for their next job. I was forced to accept it as is...croocked and at a forward tilt. Mostly, I just gave up knowing I will have to have someone else come to fix their mess. It was clear to me they either did not want to or did not know how to do the job properly. As for mess, they did not use any drop cloth and got tarry streakes from their shoes all over my kitchen and entry tile floor. It took me an hour with a bottle of GooGone to get it all off. They cracked one of my floor tiles in front of the oven area. They left all of the packaging, random screws and garbage in several areas of my garage and kitchen. In my opinion, they were generally incompetent, sloppy, careless, rude, sexist.... and I will never let them into my house again!