We bought some smart thermostats from an outside vendor and I called C & J Air Conditioning and Heating to have them installed. The display on one of the thermostats blank while it was being installed and the technician kind of pushed on it a bit and it reset and came back to life. It seemed fine at first, but now about half the time we touch the thermostat it goes blank again, so I don't think it was seated properly. I called the company to ask them to come out and take another look, but they said they weren't willing to send someone since they didn't sell us the thermostat. The price for the work was alright and I was extremely happy with the person they sent out to do the installation, but I was disappointed that the company wouldn't back up the work they had done.