DO NOT HIRE ANYONE BUT COOPER. VALUE VALUE VALUE! Use my research and experience to help you: Let me start my saying that your system is only as good as the install job. A Goodman Unit installed right is better, cheaper to run, cheaper to buy, and more efficient than a Trane not installed well. I knew I needed a good installer...One who will get the ductwork neat, clean, and tight. Brand is secondary. I just purchased this (large, upscale) house in June and the upstairs AC was not cooling the house. It ran all day, didn't cool, and my electric bill was $642 for the first month here. So first I called a different |HVAC company. They did a $99 diagnostic and said the system was charged with coolant and fine, just old. Yet another week of a heat wave went by and no relief with it running all week. So I decided to get estimates from three reputable companies. One was a Trane providing company. Another was Lowes, and the other was Cooper, who my next door neighbor recommended. I gathered from the three estimators that my old upstairs system was leaking, rotted, and the duct work was decomposing and full of gaps. They showed me leaks, stained wood, and gaps. The $99 diagnostic local company was wrong saying the system was fine! Cooper was the ONLY company that wanted to replace ALL of the ductwork. The other two were going to only replace some and if I was lucky tape over the holes. I got all new ductwork with a new, higher R value, and two Carrier systems installed for less than my other estimates. They are the only company to include a whole house air filter for each system (April Aire). I heard them working, they ran into problems where they found other issues and I heard the guys talking and they called the shop to have more sheet metal delivered and took care of any problems they found. This is while they were up in a 120 degree attic covered in sweat and could have rushed to get out of there. They started the job by running carpet protector up the stairs and along the carpeted work path and drop cloths on the hardwood. The job was done really neatly and I have attached photos. PS I have never taken all this time to write a long review like this.