Humidifier with reversible housing and distribution tray overflow

A humidifier comprising:

• a base having an adapter in a first position adapted to be connected to a furnace duct, the base housing a water panel assembly and a water feed tube to supply water to a water distribution structure disposed on top of the water panel assembly;
• and
• a cover movably connected to the base,
• wherein only the base and the cover are rotatable independent of the water distribution structure to place the adapter in a second position to adapt to a different furnace duct, and the base and cover are snap fit together without fasteners
• wherein the water panel assembly is comprised of a scale control insert, an evaporative water panel held within the scale control insert and a distribution tray retained within the scale control insert above the water panel, and
• wherein the scale control insert is formed with an upstanding skirt having opposing end panels formed with slots therein, a first upstanding vertical wall parallel and spaced from a first side panel to form a first overflow channel therebetween, and a second upstanding vertical wall parallel to and spaced from a second side panel to form a second overflow channel therebetween, whereby any excess water in the distribution tray will travel over the first and second walls into the first and second overflow channels and flow downwardly between the water panel and the end panels of the scale control insert to a drain.