Everyone is aware that the outside air in winter is cold. What may be a surprise is that cold air is also dry air. Simply stated, cold air is not capable of holding much water vapor. As the air gets colder, it gets drier. The result is that during cold winter months, the humidity levels in your home can be low enough to feel like a desert. If that sounds uncomfortable to you, consider solving dry air issues with an evaporative indoor air humidifier for your entire home.