A: In the winter air is drier. This dry air can damage the woodwork and furniture you have in your home as well as zap the moisture from your skin. Dry air even makes you feel cooler because your body senses heat as a combination of temperature and humidity. Adding humidity to offset this drying process will improve your comfort as well as preserve the woodwork in your home. As an added benefit, you may actually be able to lower your thermostat a couple of degrees. You will not only feel warmer, but will actually lower your heating bill!