The Aprilaire Model 1830 Dehumidifier is a high-capacity solution that helps you achieve total comfort through humidity control. It is installed as part of your home's heating and cooling system by a local HVAC professional. The 1830 pulls air from every room in your home through the return ducts. Then, it removes the moisture and sends dry air back throughout your home. It works in conjunction with your air conditioner to efficiently balance the humidity levels in your home, but can also work independently on days when you don't need the air conditioner.