I was having trouble with my thermostat. It kept saying the batteries were low and then it died. Last night it was 54 degrees inside the house and I couldn't get the furnace running. I changed the batteries four times and nothing happened. I called Jones first thing this morning and they sent Greg K out. He was polite, courteous and professional. He changed the batteries and it appeared the system was working. However, he didn't want to waste a service call and did the cleaning and tune-up to the system in preparation for winter. When he went to adjust the temperature so he could heat up the house; he encountered the problem with the thermostat. He provided several options and explained the differences between the two models. He quickly installed and programmed it. He taught me how to set it and program it.
I highly recommend Greg K.