I woke up at 2 in the day plus noticed that chilly air was blowing on my face. Sometimes our furnace blows chilly air for just a second before it turns warm. I waited several minutes plus the air never turned warm. It just kept blowing chilly air. I was actually tired plus had to get up to go to work in a few hours so I tried to talk myself out of worrying. I told myself that the furnace would kick on in just a minute plus that when it turned on next time it would be warm. However, I sit there in bed for a long time plus the furnace didn’t kick off. Also, the air never got warm. I remembered that the furnace only kicks off when it reaches the common temperatures as set on the thermostat. If it is blowing chilly air, instead of hot, then it never will kick off. I got up plus turned the thermostat off. That is when I noticed that it was 4 degrees colder in the home than it should be. I waited several minutes plus turned the thermostat back on. Sure enough, chilly air started blowing once again. By now a full hour had passed plus I doubted I would get any more sleep. I assumed I would have to call the furnace businesss in the day. However, I decided to mess with the thermostat one more time first. That was when I noticed that it was set to cool plus not heat. My partner must have set it to 50 degrees plus turned the air conditioning system on because he was hot. I didn’t get any more sleep but at least I didn’t have to call out the professionals either.