I have been working in the HVACR field for about 13 years now. I started my career in residential air conditioning (for about 3 years). The company I worked for sold only Trane equipment. I think the quality of Trane is very good, however it's a little pricey. I then got into commercial and industrial Refrigeration with hussmann. However I am now working with a State University, I also just got my contractors license to do my own thing in my spare time. I am looking to sell quality brand heating and air conditioning unit mabey other then Trane, Carrier. I was trying for something reliable, quiet operating, and looks good to the eye. Does anybody have any suggestions?