Our A/C unit had failed, so we needed to do something. We previously had a builder-grade HVAC system, and it was not very energy efficient. We contacted Knochelmann based on their Angie's List grade. The salesman, John Knochelmann, Jr., was very pleasant and easy to work with. He spent almost three hours with us measuring and assessing, explaining different systems and options (heat pump versus A/C unit, for example), and answering all the questions we had. I believe him to be honest and trustworthy; he had the opportunity to sell us more than we needed, but he advised us towards more practical, lower-cost solutions. Days later, after we thought about it and did more of our own research, we decided that we wanted the "better" option between "good", "better" and "best", and John accepted our choice and came back out the next day to finish the paperwork and schedule the install. He was courteous, friendly, and did not apply the "hard sell" that I personally detest. It felt like talking with a friend or neighbor. The install was scheduled for a few days later, at a day that worked for us. The two-man crew showed up on time. The guys were nice, friendly and respectful of our property (yes, they wore the footies all day!). They pretty much did their thing throughout the day and left us alone, occasionally going in and out of the house for equipment and to install the new A/C unit outside. When there was a question, they would ask our preferences and would patiently explain the pros and cons so we could answer with an informed response. At the end of the day -- they were there roughly from 9:00am to 7:00pm -- they walked us around and explained everything they had done, showed us how to operate the thermostat and equipment, and answered any final questions we had. They also performed some ductwork to improve the air flow to an upstairs bedroom. They did an outstanding job cleaning up and hauling away the existing furnace and A/C. They actually had the area looking cleaner than it was when they arrived! We were very impressed. They filed the paperwork on our behalf with Duke Energy for the rebate on installing a new energy-efficient system, and we received the checks within 2-3 weeks of the install. They followed through and executed well. It has been two-three weeks since the install and our system is working great. Much quieter as well. We were very curious and concerned about the quality of the sales and the installation process -- as we had never had to replace an HVAC system before -- but they performed very well and I'm comfortable that we were not oversold. They were professional and courteous. I was happy to pay a more premium price for quality equipment and a high-quality install. The total price also included all required sales tax. They did not disappoint. I would recommend them if you are considering HVAC services.