The seasons changed rather fast this year, however it went from Summer to Wintertide in one dayâ€¦ The only problem is that when I changed the temperature control from air conditioning to heat, it didn’t change. The air conditioning stayed onâ€¦ Cold air continued to pour out of the vents & I could hear the compressor kicking on just the same as before. It was clearly time to call out the professionals however I didn’t guess who to call, then should I call the oil furnace or the air conditioner repairman? Once I looked it up, I discovered they are one & the same & go under the title Heating, Ventilation & A/C repair! An Heating, Ventilation & A/C professional was able to come out the next day & explained the situation. It seems that there is an internal switch inside of my heating, ventilation, & A/C method that tells the method to turn on the heat or the air conditioner. This switch was fried in my system. In short, my method was stuck thinking I wanted the air condition on still. The professional would have to order a new switch. In the meantime, I had to make do with space oil furnace since my oil furnace still would not work. Thankfully, it was not super frigid yet so this was workable for the time being. The new area came in within a couple of afternoons too so the professional came back & got my central heating working well again. It is funny how little thought I provide to the workings of my heating, ventilation, & A/C until something goes wrong. And yet, I depend on it every single day.