Joseph O. and Francisco M. were very thorough in problem solving what I thought was a malfunction issue with the new thermostat that KCA put in back in February. The thermostat was fine, but the new device which was on an exterior wall, was not blocking the outside frigid air like the last thermostat, and therefore the thermostat was registering the room temp 20 degrees lower than the actual temp of room, thus causing the heat pump to not only run continuously, but also using the auxiliary heat function due to the temperature differentials. They used a special putty to block the wall space from the cold air, and completely allowed the thermostat to function properly. Great problem solving. They also provided a great explanation of everything they were doing from start to finish – extremely caring and professional. Would highly recommend both technicians!! — Claudia H.