Well, here in the "north" we are expecting snow tonight. So, as you can imagine our furnaces are running. It's ain't fun. I haven't even dug out the humidifier yet. It seems as though we had A/C on a week or two ago.
The absolute worst is being in the car! You must run the heat to defrost the windshield even if you don't mind freezing to death. Your eyes are toast immediately. So, for those of you thinking about "it," we are actually THERE.
Personally, I have forced air (of course). Our furnace is fairly new and was installed with a new A/C unit at the same time. I will not be changing heating styles anytime soon!
Don't trust any refractive surgeon with YOUR eyes.
The Dry Eye Queen