Dehumidifiers can protect your health if your house is too moist. Bacteria, viruses and fungi thrive in moist environments. Control of the relative humidity in basements and even your living areas can be very important. Only dedicated dehumidifiers can effectively reduce excess moisture without over cooling your home. By nature air conditioning removes humidity but if you have a major moisture problem you may need a self contained whole home or basement control system. Aprilaire makes different models which can control your comfort.