Mr. Nelson a professional A/C installer/repair visited our home today to repair our broken A/C unit. Mr. Nelson was wonderful, He went over and above the call of duty. He (of course) fixed the problem, was detailed in his methods to find another problem with the system. He was courteous, kind and would explain everything to me in detail, to aid me in understanding the new thermostat, filters, cleaning, etc.Mr. Nelson gave me the confidence to maintain and operate the system, but also how to determine if a problem arises and what to look for. I give the highest marks possible to this experienced, "people person" professional.