Herrmidifier Max 5 1400 sq 20x20 is an air cleaner designed to remove airborne particulates, including dust, dirt, smoke, pollen, viruses, spores, bacteria, and mold from indoor air. The air cleaner is installed in the system so that all the system air is circulated through it. The unit is adaptable to all new or existing residential forced air furnace and cooling systems. The air cleaner should be installed upstream of the cooling coil to keep the coil clean and reduce air conditioning coil maintenance, which in turn, will improve cooling efficiency and directly affect energy costs.