The two guys that came out to install the new unit were great. They explained to me about the new unit and the new thermostat. They even helped me setup the online access to be able to control everything from my cell phone. After a couple of weeks then someone from the company called to check to make sure everything was running to my satisfaction and wanted to know if I had any questions. They answered all of my questions. This is a GREAT company, I recommend it with 5 stars.