Emergency heat was not turning on during the polar vortex so the house dropped to 52. A Mowery technician came out and determined a part was not working. They ordered the part and a different technician came out two days later to install the part replacement. He took a look and determined the original part wasn’t the problem. He messed with the furnace for a half an hour, got it working and did not charge anything. My only charge was the original visit’s fee of $85. Very honest technician and it was greatly appreciated. Will definitely call again.