Have you ever woken up in the middle of winter and felt like your skin turned into a desert overnight? And you might be wondering, “Is my heater doing this to me?” Short answer: yes, it can. But why exactly does that happen? Furnaces heat your home by pushing warm air into every room. Warm air holds more moisture than cold air, but here’s the catch: when that air is heated, the relative humidity level drops. So even though your furnace isn’t removing moisture directly, heating the air makes your...