It is all ready cold here in the Midwest and I am not looking forward to it. The heater has to run or you will freeze but it sucks all the moisture out of the air. It is time to get out that humidifier and get it going as well. They are a pain to keep filled with water if you have a portable but worth it. The central kind that connects to your heating system is wonderful but both require humidifier filters and you need to remember to change that first thing. You don’t want it to get moldy and put the mold spores in the air inside your house as it can make you sick!