This morning when I woke this morning at 6:30 it was freezing in our house. I look at the thermostat and it is 59 degrees in the house. I turned the heat off and back on and it wouldn't kick on. I woke up DH and he had to climb in the attic. Turns out the $400 duct cleaning people forgot to put the filter back in and put the panels back on the furnace which caused it not to kick on all night long!!!