I think our heating system is torn up because it’s stuck

Our heating system is stuck in the on position.

I have the heating set to 68 degrees but the temperature in the house is already up to 85 degrees and it’s just getting hotter in here! I have never heard of this kind of thing happening before and it’s just crazy.

It’s the middle of winter here and the outside temperatures are in the teens and twenties. However, inside of my house, it feels like a tropical rainforest! It’s so hot inside the house that I have on shorts and a tank top and no shoes. Not only am I dressed like it’s the middle of the summer, but I’m still sweating and wishing for the air conditioning even though it’s still the winter. It’s the weirdest thing that has ever happened to me. I don’t really know what to do about it, either. I have changed the batteries in the thermostat unit, but that didn’t seem to do a thing to help the situation. I don’t think that’s the problem, but I have no clue what the problem actually is. I asked a couple of other people if they have ever heard about this kind of thing happening before, but no one has. I actually have the windows open and the temperature outside is still freezing. I know that I’m spending a fortune on heating a house that doesn’t need to be heated anymore at all! I guess I’m going to have to call my local HVAC company and have them come to fix the furnace. Something is definitely wrong and I can’t keep this up for much longer.
Whole home air purification