Markool Heating & Cooling offers whole house humidifier installation services in Jefferson, MD. Moisture plays an important role in your home’s indoor air quality. Too much moisture can cause your home to feel stuffy, but a lack of moisture can be just as problematic. When the air in your home is too dry, it can cause health issues and it can damage your furniture. A home humidifier can improve the moisture levels in your home and can keep your family healthier.