Yes. Many people experience negative health effects at humidity levels below 30%, which is common in Calgary. When indoor air is too dry, most people experience dry, itchy, or flakey skin. Others develop a scratchy throat or raw sinus passages. Some adults and children get nose bleeds or have breathing difficulties. Hair can feel damaged and frizzy. Allergies and asthma symptoms may act up. In the Winter, dry, hot air from your furnace makes it even worse.  Using a whole-home humidifier restores proper humidity levels, even during the driest Winter months. Your home will feel more comfortable, and so will your skin, hair, and sinuses.