The importance of air humidifiers is hard to be neglected and overestimated. Yet, not all units available on the market are equally good and efficient. Don’t know which model to choose? Go for a whole house humidifier. Able to replace several portable units, this system will keep the air in your house or apartment duly humidified whenever you need it. We've made 5 comprehensive whole house humidifier reviews to narrow down your choice and help you find the best whole house humidifier for your living space.