Upon arrival the heat was not working on one side of the home. She showed me the thermostat for that unit and I found the thermostat saying “LO” but below that it said “Change and had an empty battery rectangle on the stat” which indicated the batteries had gone bad. I replaced the batteries in that thermostat and then it came right on and was working properly. I went ahead and changed the batteries out in her other thermostat as well just so she had both installed at the same time so she will be able to change them together in the future. Both systems are up and running properly now. She paid for the trip fee of $59 by check. Thank you so much for being a Perfect Service Family Member with LBA!